KR20240035281A - An augmented reality device for proving augmented reality service which controls an object in the real world space and a method for operating the same - Google Patents

Abstract

An augmented reality device that provides an augmented reality service that controls objects in real space and a method of operating the same are provided. An augmented reality device according to an embodiment of the present disclosure recognizes a plane including a wall and a floor from a spatial image obtained by photographing a real space using a camera, expands the recognized wall and floor, and uses the spatial image. By performing 3D in-painting on the area covered by the object among the extended walls and floor, a 3D model of the real space is created, and a 2D segmentation (2D segmentation) is performed to segment the object selected by user input from the space image. 2D segmentation), and 3D segmentation that divides an object from real space on a spatial image based on a 3D model of the object or 3D location information can be performed.

Description

Augmented reality device that provides augmented reality service for controlling objects in real space and its operating method {AN AUGMENTED REALITY DEVICE FOR PROVING AUGMENTED REALITY SERVICE WHICH CONTROLS AN OBJECT IN THE REAL WORLD SPACE AND A METHOD FOR OPERATING THE SAME}

This disclosure relates to an augmented reality device that provides an augmented reality service that controls objects in real space and a method of operating the same. Specifically, the present disclosure discloses an augmented reality device that provides an augmented reality service capable of controlling not only virtual objects but also objects in real space using image processing and augmented reality technology using a deep neural network, and a method of operating the same.

Augmented Reality is a technology that displays virtual objects by overlaying them on the physical environment space or real world objects of the real world. Augmented reality devices using augmented reality technology (for example, Smart glasses are useful in everyday life, such as information retrieval, route guidance, and camera photography. In particular, smart glasses are also worn as fashion items and are mainly used for outdoor activities.

Augmented reality technology that is currently being used and distributed has been developed for various services that take real-world objects into consideration. Examples of augmented reality technology that considers real objects in augmented reality include technology that detects the floorplan of an indoor space using an augmented reality device, and technology that detects the floorplan of an indoor space based on an outline created by segmenting real objects. There are technologies for arranging virtual objects and synthesizing virtual objects or various graphic objects, or technologies for segmenting and then tracking specific real objects.

Since augmented reality technology is a technology that represents virtual objects in real space, it is necessary to recognize the real space in real time and utilize information about the recognized real objects. For example, when a user wants to replace furniture in a living room indoors, conventional augmented reality services use a method of awkwardly displaying virtual furniture (virtual objects) over real furniture (real objects). Conventional augmented reality technology uses a method of deleting the area of the furniture to be replaced and placing virtual furniture (virtual objects). However, when multiple pieces of furniture are attached, it is difficult to selectively delete only specific pieces of furniture, and simple interpolation is used. Since in-painting is performed, there is a problem in that the background is not completely flat but is curved between walls and walls or walls and floors, creating a space that is different from the real space. In particular, while an augmented reality device runs an augmented reality application and provides an augmented reality service, operations requiring a lot of computation, such as segmentation and in-painting using a deep neural network model, must be performed continuously, reducing processing time ( There is a problem that processing time takes a long time and the heat generation and power consumption of the device increases. Due to the nature of augmented reality devices, which are designed to have a small form factor for portability, heat generation and power consumption can greatly affect device use time.

In order to solve the above-mentioned technical problems, the present disclosure provides an augmented reality device that provides an augmented reality service that controls objects in real space. An augmented reality device according to an embodiment of the present disclosure includes an IMU sensor (Inertial Measurement Unit) including a camera, an accelerometer, and a gyro sensor, a memory that stores at least one instruction, and at least one processor executing at least one instruction. The at least one processor may obtain a spatial image by photographing real space using a camera. The at least one processor may recognize a plane including a wall and a floor from the acquired spatial image. The at least one processor extends the wall and floor according to the recognized plane, and performs 3D in-painting on the area obscured by the object among the extended wall and floor using a spatial image, thereby creating a 3D image of real space. A model can be created. The at least one processor may perform 2D segmentation to segment an object selected by user input from a spatial image. The at least one processor may perform 3D segmentation to segment an object from real space on a spatial image based on a 3D model or 3D location information of the object.

In order to solve the above-mentioned technical problems, the present disclosure provides a method of providing an augmented reality service in which an augmented reality device controls objects in real space. The method may include recognizing a plane including a wall and a floor from a spatial image obtained by photographing a real space using a camera. The method expands the walls and floors according to the recognized plane, and uses spatial images to perform 3D in-painting on the areas obscured by objects among the expanded walls and floors to create a 3D model of real space. It may include steps. The method may include performing 2D segmentation to segment an object selected by user input from a spatial image. The method may include performing 3D segmentation to segment an object from real space on a spatial image based on a 3D model or 3D location information of the object.

The present disclosure provides a computer program product including a computer-readable storage medium. The storage medium includes the operation of recognizing a plane including a wall and a floor from a spatial image obtained by photographing a real space using a camera, expanding the wall and floor according to the recognized plane, and expanding the wall and the floor using the spatial image. An operation to create a 3D model of real space by performing 3D in-painting on areas hidden by objects in the floor, and 2D segmentation to segment objects selected by user input from the spatial image. In order for the augmented reality device to perform the operation of performing the operation and the operation of performing 3D segmentation of dividing the object from real space on the spatial image based on the 3D model or 3D location information of the object, the augmented reality device It may include instructions that can be read by a real device.

The present disclosure may be readily understood by combination of the following detailed description and accompanying drawings, where reference numerals refer to structural elements.
1 is a conceptual diagram illustrating an operation of an augmented reality device of the present disclosure to provide an augmented reality service that deletes, moves, or adds objects in real space.
FIG. 2 is a diagram illustrating an operation of an augmented reality device controlling an object in real space according to an embodiment of the present disclosure.
Figure 3 is a block diagram showing the components of an augmented reality device according to an embodiment of the present disclosure.
Figure 4 is a flowchart showing a method of operating an augmented reality device according to an embodiment of the present disclosure.
FIG. 5 is a flowchart illustrating a method for an augmented reality device to generate a three-dimensional model of a real space according to an embodiment of the present disclosure.
FIG. 6 is a diagram illustrating an operation of an augmented reality device acquiring a three-dimensional model of the shape of planes in real space according to an embodiment of the present disclosure.
FIG. 7A is a diagram illustrating an operation of an augmented reality device distinguishing between a wall and a floor plane in a spatial image according to an embodiment of the present disclosure.
FIG. 7B is a diagram illustrating an operation of an augmented reality device according to an embodiment of the present disclosure to distinguish the planes of a wall and a window in a spatial image.
FIG. 7C is a diagram illustrating an operation of an augmented reality device according to an embodiment of the present disclosure to distinguish between walls and floor planes with different patterns in a spatial image.
FIG. 8 is a diagram illustrating an operation of an augmented reality device performing 3D in-painting according to an embodiment of the present disclosure.
FIG. 9 is a diagram illustrating an operation of an augmented reality device performing 2D segmentation from a spatial image according to an embodiment of the present disclosure.
FIG. 10 is a flowchart illustrating a method in which an augmented reality device performs 3D segmentation based on whether a 3D model for an object is stored according to an embodiment of the present disclosure.
FIG. 11 is a diagram illustrating an operation in which an augmented reality device performs 3D segmentation using a previously stored 3D model of an object according to an embodiment of the present disclosure.
FIG. 12 is a diagram illustrating an operation of an augmented reality device performing 3D segmentation when a 3D model for an object is not stored according to an embodiment of the present disclosure.
FIG. 13 is a flowchart illustrating a method in which an augmented reality device places a 3D model in real space and performs rendering using the 3D model according to an embodiment of the present disclosure.
FIG. 14 is a flowchart illustrating a method in which an augmented reality device additionally performs 3D segmentation and updates the segmentation result according to an embodiment of the present disclosure.

The terms used in the embodiments of the present specification are general terms that are currently widely used as much as possible while considering the function of the present disclosure, but this may vary depending on the intention or precedent of a person working in the art, the emergence of new technology, etc. . In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the relevant embodiment. Therefore, the terms used in this specification should not be defined simply as the names of the terms, but should be defined based on the meaning of the term and the overall content of the present disclosure.

Singular expressions may include plural expressions, unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as generally understood by a person of ordinary skill in the technical field described herein.

Throughout the present disclosure, when a part “includes” a certain element, this means that it may further include other elements rather than excluding other elements, unless specifically stated to the contrary. In addition, terms such as "...unit" and "...module" used in this specification refer to a unit that processes at least one function or operation, which is implemented as hardware or software or as a combination of hardware and software. It can be implemented.

The expression “configured to” used in the present disclosure may mean, for example, “suitable for,” “having the capacity to,” depending on the situation. It can be used interchangeably with ", "designed to," "adapted to," "made to," or "capable of." The term “configured (or set to)” may not necessarily mean “specifically designed to” in hardware. Instead, in some contexts, the expression “system configured to” may mean that the system is “capable of” in conjunction with other devices or components. For example, the phrase "processor configured (or set) to perform A, B, and C" refers to a processor dedicated to performing the operations (e.g., an embedded processor), or by executing one or more software programs stored in memory. It may refer to a general-purpose processor (e.g., CPU or application processor) that can perform the corresponding operations.

In addition, in the present disclosure, when a component is referred to as “connected” or “connected” to another component, the component may be directly connected or directly connected to the other component, but in particular, the contrary It should be understood that unless a base material exists, it may be connected or connected through another component in the middle.

In this disclosure, 'Augmented Reality' means showing virtual images together in the physical environment space of the real world, or showing real objects and virtual images together.

In the present disclosure, an 'augmented reality device' is a device capable of expressing augmented reality, for example, a mobile device, a smart phone, a laptop computer, a desktop, a tablet PC, an e-book reader, It may be one of digital broadcasting terminals, PDAs (Personal Digital Assistants), PMPs (Portable Multimedia Players), navigation, MP3 players, or camcorders. However, it is not limited thereto, and in one embodiment of the present disclosure, the augmented reality device includes not only glasses-shaped Augmented Reality Glasses worn on the face by the user, but also worn on the head. It can also be implemented as a wearable head mounted display device (HMD: Head Mounted Display Apparatus) or an augmented reality helmet.

In this disclosure, 'real world space' refers to the space of the real world that a user sees through an augmented reality device. In one embodiment of the present disclosure, real space may mean indoor space. Real world objects may be placed within real space.

In the present disclosure, a 'virtual object' is an image generated through an optical engine and may include both static images and dynamic images. These virtual objects are observed together with the real scene, and may be images representing information about the real object in the real scene, information about the operation of the augmented reality device, or a control menu. In one embodiment of the present disclosure, a 'virtual object' may include a User Interface (UI) provided through an application or program executed by an augmented reality device. For example, a virtual object may be a UI composed of a bounding box representing a recognition area such as a wall, floor, or window recognized from a spatial image.

A typical augmented reality device includes an optical engine for creating a virtual object composed of light generated from a light source, and a wave formed of a transparent material that guides the virtual object created in the optical engine to the user's eyes and allows the user to view scenes in the real world as well. A guide (waveguide, or light guide plate) is provided. As mentioned above, augmented reality devices must be able to observe not only virtual objects but also scenes in the real world, so in order to guide the light generated by the optical engine to the user's eyes through a wave guide, the light path must be basically straight. An optical element is needed to change . At this time, the optical path may be changed using reflection by a mirror, etc., or the optical path may be changed through diffraction by a diffractive element such as a DOE (Diffractive optical element), HOE (Holographic optical element), etc., but is not limited to this. .

In the present disclosure, 'in-painting' refers to an image processing technique that restores part of an image when that part is obscured, lost, or distorted.

In the present disclosure, 'segmentation' refers to classifying a class or category of an object within an image, distinguishing an object from another object or a background image within the image according to the classification result, and dividing the object. It represents an image processing technology that uses

Below, with reference to the attached drawings, embodiments of the present disclosure will be described in detail so that those skilled in the art can easily practice them. However, the present disclosure may be implemented in many different forms and is not limited to the embodiments described herein.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.

FIG. 1 is a conceptual diagram illustrating an operation of the augmented reality device 100 of the present disclosure to provide an augmented reality service that deletes, moves, or adds objects 11, 12, and 13 within the real space 10.

The augmented reality device 100 is a device that provides augmented reality services, for example, a mobile device, smart phone, laptop computer, desktop, tablet PC, e-book terminal, digital broadcast terminal. , Personal Digital Assistants (PDAs), Portable Multimedia Players (PMPs), navigation, MP3 players, or camcorders. In the embodiment shown in FIG. 1, the augmented reality device 100 may be a smart phone. However, it is not limited thereto, and in one embodiment of the present disclosure, the augmented reality device 100 includes not only glasses-shaped Augmented Reality Glasses that the user wears on the face, but also the head. It can also be implemented as a Head Mounted Display Apparatus (HMD) worn on the body or an Augmented Reality Helmet.

Referring to FIG. 1, the augmented reality device 100 can execute an augmented reality service (operation ①). In one embodiment of the present disclosure, the augmented reality device 100 may provide an augmented reality service to a user by executing an augmented reality application. When the augmented reality application is executed, the augmented reality device 100 can obtain a spatial image 20 by photographing the real space 10 using the camera 110 (see FIG. 3). The augmented reality device 100 can obtain a spatial image 20 composed of a plurality of image frames by photographing the real space 10 in real time.

The augmented reality device 100 may display the spatial image 20 on the display unit and receive a user input for selecting a specific object on the spatial image 20 (operation ②). The spatial image 20 may include object images 21, 22, and 23 for each of the objects 11, 12, and 13 arranged in the real space 10. For example, the first object image 21 is an image of a lighting lamp as the first object 11, the second object image 22 is an image of a television as the second object 12, and the third object image 23 ) may be an image of a table, which is the third object 13. In one embodiment of the present disclosure, the augmented reality device 100 includes a touch screen, and displays any one of a plurality of object images 21, 22, and 23 included in the spatial image 20 displayed on the touch screen. A touch input from a user selecting an object image can be received. In the embodiment shown in FIG. 1 , the augmented reality device 100 may receive a user's touch input for selecting the second object image 22 on the spatial image 20 . The augmented reality device 100 may select the second object image 22 based on the user's touch input. However, it is not limited to this, and for example, when the augmented reality device 100 is implemented as glasses-shaped augmented reality glass, the object is displayed based on the gaze point where the gaze directions of both eyes of the user converge. You can also choose. Additionally, as another example, when the augmented reality device 100 is implemented as a head mounted display device, an object may be selected based on a user input received through an external controller.

The augmented reality device 100 can delete the object selected by user input (operation ③). In the embodiment shown in FIG. 1, the augmented reality device 100 may delete the second object image 22 selected by user input from the spatial image 20. The wall and floor obscured by the second object (television) may be displayed in the area where the second object image 22 has been deleted. In one embodiment of the present disclosure, the augmented reality device 100 recognizes the planes of the wall and floor within the real space 10 using plane detection technology, and expands the recognized planes of the wall and floor. And, create a 3D model of the real space 10 by 3D in-painting the area covered by the plurality of objects 11, 12, and 13 among the expanded wall and floor flat areas. can do. The augmented reality device 100 may segment the second object image 22 selected by user input from the spatial image 20 by performing 3D segmentation. The augmented reality device 100 places a three-dimensional model of the real space 10 on the plane of the walls and floor recognized in the real space 10, and performs rendering using the three-dimensional model to create a spatial image ( 20), an area obscured by the second object image 22 divided by 3D segmentation may be displayed. The specific 3D model creation method and 3D segmentation method will be described in detail in the description of the drawings below.

The augmented reality device 100 can move and add an object image selected by user input on the spatial image 20 (operation ④). In the embodiment shown in FIG. 1, the augmented reality device 100 moves the position of the first object image 21 with respect to the lamp from left to right and creates a new object image of a sofa, which is an object that did not exist in the real space 10. (30) can be added. In one embodiment of the present disclosure, the augmented reality device 100 uses a pre-stored 3D model of the object, or the 3D position of the edge, feature point, or pixel of the object recognized from the spatial image 20. By performing 3D segmentation using at least one of the coordinate values, the first object image 21 can be moved or a new object image 30 can be added.

A specific method by which the augmented reality device 100 controls an object, such as deleting, moving, or adding an object to the spatial image 20 of the real space 10, will be described in detail with reference to FIG. 2 .

FIG. 2 is a diagram illustrating an operation of an augmented reality device controlling an object in real space according to an embodiment of the present disclosure.

Referring to FIG. 2, the augmented reality device 100 (see FIG. 1) recognizes space from the spatial image 200 of the real space and recognizes the planes of the walls 202, 203, 204 and the floor 201 in the real space. can be recognized (action ①). The augmented reality device 100 can run an augmented reality application to start an augmented reality service and obtain a spatial image 200 by photographing a real space using a camera 110 (see FIG. 3). In one embodiment of the present disclosure, the augmented reality device 100 detects the walls 202, 203, 204 and the floor from the spatial image 200 using plane detection technology provided from an augmented reality application. 201) can be recognized.

The augmented reality device 100 can perform 3D in-painting on walls and floors (operation ②). In one embodiment of the present disclosure, the augmented reality device 100 extracts three random points from each of the recognized planes of the walls 202, 203, and 204 and the floor 201, and The plane equations for each of 204) and floor 201 can be derived. The augmented reality device 100 extends the planes of the walls 202, 203, 204 and the floor 201 to the virtual walls 212, 213, 214 and the virtual floor 211 based on the derived plane equations. The configured 3D model form can be obtained. The augmented reality device 100 acquires depth value information for each wall, floor, and object of the real space obtained from the camera 110, acquires color information from the spatial image 200, and obtains depth value information and color. Based on the information, the virtual walls 212, 213, 214, the virtual floor 211, and the object area can be distinguished. The augmented reality device 100 is in the form of a three-dimensional model, except for the portion obscured by the object among the virtual walls 212, 213, and 214 and the virtual floor 211, and the area obscured by the object is a wall in real space ( In-painting can be performed separately on the virtual walls 212, 213, 214 and the virtual floor 211 using the images of the images 202, 203, 204 and the floor 201, respectively.

In the present disclosure, 'in-painting' refers to an image processing technology that restores part of an image when that part is obscured, lost, or distorted. In the present disclosure, '3D in-painting' may refer to an image processing technology that restores an area obscured by a 3D object in a 3D image. The augmented reality device 100 may generate a three-dimensional model including virtual walls 212, 213, and 214 and a virtual floor 211 by performing in-painting. In one embodiment of the present disclosure, the augmented reality device 100 stores the generated 3D model in a storage space (e.g., 3D model database 148 (see FIG. 3)) in the memory 140 (see FIG. 3). You can save it.

The augmented reality device 100 can perform 2D segmentation of an object selected by user input (operation ③). Referring to the embodiment shown in FIG. 2, the augmented reality device 100 may receive a user input for selecting an object to be controlled on the spatial image 200 displayed through the running augmented reality application. In one embodiment of the present disclosure, the augmented reality device 100 displays a spatial image 200 through a touch screen and selects one object 220 among a plurality of objects included in the spatial image 200. Can receive user input. The augmented reality device 100 selects the object 220 based on the user input, and obtains two-dimensional image information (e.g., two-dimensional position coordinate value information) of the selected object 220 from actions ① and actions ②. Two-dimensional segmentation of the object 220 may be performed based on planar information, depth value information, and object classification information of the walls 202, 203, and 204 and the floor 201. In one embodiment of the present disclosure, the augmented reality device 100 uses a pre-trained deep neural network model to classify a plurality of objects into labels, classes, or categories. ) can be used to segment the object 220 selected by user input. In this disclosure, 'segmentation' refers to an image processing technology that classifies objects in an image, distinguishes objects in the image from other objects or background images according to the classification result, and divides the objects.

The augmented reality device 100 can perform 3D segmentation of the selected object 220 (operation ④). The augmented reality device 100 may perform 3D segmentation to segment the object 220 in the spatial image 200 using information acquired through 2D segmentation. In one embodiment of the present disclosure, 3D segmentation may be performed differently depending on whether a 3D model is stored for the object 220. For example, when the 3D model for the object 220 is already stored in the storage space in the memory 140 (see FIG. 3), the augmented reality device 100 controls the direction of the 3D model stored in the memory 140. Adjust to place the 3D model of the object 220 so that it overlaps the outline (outlier) of the 2D segmentation on the spatial image 200, and obtain 3D position coordinate value information about the object 220 from the placed 3D model. can be obtained. The augmented reality device 100 may perform 3D segmentation to segment the object 220 from the spatial image 200 based on the acquired 3D position coordinate values.

For example, if the three-dimensional model for the object 220 is not stored in the memory 140 (see FIG. 3), the augmented reality device 100 may use the boundary line of the object 220 recognized from the spatial image 200. 3D vertex modeling is performed based on at least one of the (edge) 222, the feature point 224, and the 3D position coordinate values of the pixels, and the object is created through 3D vertex modeling. 3D segmentation can be performed by dividing 220 from the spatial image 200.

The augmented reality device 100 may perform at least one of deleting, moving, and replacing the object 220 (operation ⑤). The augmented reality device 100 may render the area obscured by the object 220 using a 3D model. Through rendering, the augmented reality device 100 can display a divided area through 3D segmentation of the object 220. The augmented reality device 100 uses the two-dimensional segmentation information and three-dimensional segmentation information of the object 220 to delete the object 220 from the spatial image 200 and convert the object 220 into a virtual image of another object. A replacement or movement operation may be performed to place the object 220 in another area. Through this, the augmented reality device 100 can control the object 220 in real space in augmented reality.

Conventional augmented reality services use a method of displaying virtual objects by awkwardly overlapping them on objects in real space (see 11, 12, and 13 in FIG. 1). For example, in conventional augmented reality technology, a method is used to delete the area of the furniture to be replaced and place virtual furniture (virtual objects), but when multiple pieces of furniture are attached, it is difficult to selectively delete only specific pieces of furniture. , Since in-painting is performed using a simple interpolation method, there is a problem in that if the background is not completely flat but is bent by wall-to-wall or wall-to-floor, it is created differently from the real space. In particular, while providing augmented reality services by executing an augmented reality application, image frames in real space are acquired in real time. For each of the multiple image frames acquired in real time, a deep neural network model is used to identify objects. When recognizing and segmenting, there is a problem that the amount of calculation increases and processing time takes a long time. When the amount of computation increases, object recognition and segmentation do not proceed normally in real time and are delayed, thereby reducing the satisfaction and user convenience of the augmented reality service. Additionally, when object recognition and segmentation are performed for each image frame, there is a problem of increased heat generation and power consumption of the device. Due to the nature of augmented reality devices, which are designed to have a small form factor for portability, heat generation and power consumption can greatly affect device use time.

The purpose of the present disclosure is to provide an augmented reality device 100 and a method of operating the same that provide an augmented reality service that can freely control not only virtual objects but also real objects in real space. According to an embodiment of the present disclosure, the planes of the wall and floor are recognized from the spatial image (see 20 in FIG. 1 and 200 in FIG. 2), the recognized planes are expanded, and 3D in-painting is performed to create a picture of the real space. An augmented reality device 100 is provided that generates a 3D model, divides objects through 2D and 3D segmentation, and renders areas of walls and floors obscured by objects using the 3D model.

When the augmented reality device 100 according to the embodiment shown in FIGS. 1 and 2 acquires a plurality of image frames of real space in real time, control such as deleting, moving, or replacing objects by user input. Since walls and floors only need to be rendered using a 3D model when present, the amount of computation can be reduced compared to conventional augmented reality technology that performs separate object recognition and segmentation for each of a plurality of image frames. Accordingly, the augmented reality device 100 of the present disclosure saves computing power and provides a technical effect of suppressing heat generation of the device. In addition, the augmented reality device 100 according to an embodiment of the present disclosure stores the 3D model in a storage space (e.g., the 3D model database 148 (see FIG. 3)) in the memory 140 (see FIG. 3). It stores the 3D model and performs rendering by loading the 3D model only when control occurs, such as when an object is deleted, moved, or replaced by user input, which can shorten processing time and provide real-time augmented reality services. You can.

Figure 3 is a block diagram showing the components of the augmented reality device 100 according to an embodiment of the present disclosure.

Referring to FIG. 3 , the augmented reality device 100 may include a camera 110, an IMU sensor 120, a processor 130, a memory 140, and a display unit 150. The camera 110, IMU sensor 120, processor 130, memory 140, and display unit 150 may each be electrically and/or physically connected to each other. In FIG. 3 , only essential components for explaining the operation of the augmented reality device 100 are shown, and the components included in the augmented reality device 100 are not limited as shown in FIG. 3 . In one embodiment of the present disclosure, the augmented reality device 100 may further include a communication interface that performs data communication with an external device or server. In one embodiment of the present disclosure, the augmented reality device 100 is implemented as a portable device, and in this case, the augmented reality device 100 includes a camera 110, an IMU sensor 120, a processor 130, and a display unit ( 150) may further include a battery that supplies power.

The camera 110 is configured to acquire a spatial image of real space by photographing real space. In one embodiment of the present disclosure, the camera 110 may include a lens module, an image sensor, and an image processing module. The camera 110 may acquire a still image or video of a real space using an image sensor (eg, CMOS or CCD). A video may include a plurality of image frames acquired in real time by photographing real space through the camera 110. The image processing module may transmit a still image consisting of a single image frame or video data consisting of a plurality of image frames acquired through an image sensor to the processor 130. In one embodiment of the present disclosure, the image processing module may process the acquired still image or video, extract necessary information, and transmit the extracted information to the processor 130.

The IMU sensor (Inertial Measurement Unit) 120 is a sensor configured to measure the movement speed, direction, angle, and gravitational acceleration of the augmented reality device 100. The IMU sensor 120 may include an acceleration sensor 122 and a gyro sensor 124. Although not shown in FIG. 3, the IMU sensor 120 may further include a geomagnetic sensor (magnetometer).

The acceleration sensor (accelerometer) 122 is a sensor configured to measure acceleration according to a change in movement when a dynamic force such as acceleration force, vibration force, or impact force is generated in the augmented reality device 100. In one embodiment of the present disclosure, the acceleration sensor 122 may be configured as a three-axis accelerometer that measures acceleration in the row direction, lateral direction, and height direction.

The gyroscope 124 is a sensor configured to measure the angular velocity, which is the change in rotation of the augmented reality device 100. In one embodiment of the present disclosure, the gyro sensor 124 may include a three-axis angular velocity that measures roll, pitch, and yaw angular velocities.

In one embodiment of the present disclosure, the IMU sensor 120 measures acceleration and angular velocity using the acceleration sensor 122 and the gyro sensor 124, and can detect the direction of gravity based on the measured acceleration and angular velocity. . Here, the detected 'gravity direction' may be the same as the direction of the normal vector of the floor surface in real space. The IMU sensor 120 may provide information about the direction of gravity to the processor 130.

The processor 130 may execute one or more instructions of a program stored in the memory 140. The processor 130 may be comprised of hardware components that perform arithmetic, logic, input/output operations, and image processing. The processor 130 may include, for example, a Central Processing Unit (Central Processing Unit), a microprocessor (microprocessor), a Graphic Processing Unit (Graphic Processing Unit), Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), and Digital Signal Processors (DSPDs). It may consist of at least one of Signal Processing Devices (PLDs), Programmable Logic Devices (PLDs), and Field Programmable Gate Arrays (FPGAs), but is not limited thereto.

In one embodiment of the present disclosure, the processor 130 may include an AI processor that performs artificial intelligence (AI) learning. AI processors may be manufactured in the form of dedicated hardware chips for artificial intelligence (AI), or as part of existing general-purpose processors (e.g. CPU or application processor) or graphics-specific processors (e.g. GPU) for augmented reality devices. It may also be mounted on (100).

In FIG. 3, the processor 130 is shown as one element, but it is not limited thereto. In one embodiment of the present disclosure, the processor 130 may be composed of one or more elements.

The memory 140 may be, for example, a flash memory type, a hard disk type, a multimedia card micro type, or a card type memory (e.g., SD or XD memory). etc.), RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM (Programmable Read-Only Memory), or It may be composed of at least one type of storage medium, such as an optical disk.

The memory 140 may store instructions related to operations in which the augmented reality device 100 performs 3D in-painting and 3D segmentation to provide an augmented reality service that controls objects in real space. there is. In one embodiment of the present disclosure, the memory 140 includes at least one of instructions, an algorithm, a data structure, a program code, and an application program that can be read by the processor 130. can be saved. Instructions, algorithms, data structures, and program codes stored in memory 140 may be implemented in, for example, programming or scripting languages such as C, C++, Java, assembler, etc.

The memory 140 may store instructions, algorithms, data structures, or program codes related to the in-painting module 142, the segmentation module 144, and the rendering module 146. The 'module' included in the memory 140 refers to a unit that processes functions or operations performed by the processor 130, and may be implemented as software such as instructions, algorithms, data structures, or program code. . In one embodiment of the present disclosure, the memory 140 may include a 3D model database 148, which is a storage space.

In the following embodiment, the processor 130 may be implemented by executing instructions or program codes stored in the memory 140.

The processor 130 may execute an augmented reality application and acquire a spatial image of the real space from the camera 110 as the augmented reality application is executed. In one embodiment of the present disclosure, the processor 130 may acquire a spatial image composed of a plurality of image frames acquired by being photographed in real time by the camera 110.

The processor 130 may recognize a plane including a wall and a floor from a spatial image. In one embodiment of the present disclosure, the processor 130 detects a horizontal plane and a vertical plane from a spatial image using plane detection, and the detected horizontal plane and vertical plane From this, walls and floors in real space can be recognized. However, it is not limited to this, and the processor 130 may recognize a plane consisting of a window or a door as well as a wall and a floor from the spatial image. In one embodiment of the present disclosure, the processor 130 determines whether the recognized plurality of planes are the same plane through location information, and if they are the same plane, can integrate them into one plane.

The in-painting module 142 extends the wall and floor according to the plane recognized from the spatial image, and performs 3D in-painting on the area obscured by the object among the extended wall and floor using the spatial image. and/or consists of instructions or program code related to operation. The processor 130 executes the instructions or program code of the in-painting module 142, acquires a 3D model shape for the wall and floor, and in-paints the 3D model shape using information of the spatial image. can be performed. In one embodiment of the present disclosure, processor 130 may derive a plane equation from each of the recognized planes including the wall and floor. The processor 130 may extract three points with high confidence index from each of the recognized walls and floors, and define a plane based on the three extracted points. In one embodiment of the present disclosure, the processor 130 recognizes the direction of the normal vector of the floor surface based on information about the direction of gravity obtained from the IMU sensor 120, and the normal vector of the floor surface and the normal vector of the wall surface You can check whether is 90°. If the angle between the normal vector of the floor surface and the normal vector of the wall surface is different from ±3° to ±5° at 90°, the processor 130 may perform plane re-recognition.

The processor 130 may obtain three-dimensional model shapes of the virtual wall and the virtual floor by expanding the wall and the floor based on the derived plane equation. In one embodiment of the present disclosure, the processor 130 may extract an intersection line where the extended wall and the floor meet, and distinguish the planes of the wall and the floor based on the extracted intersection line. The processor 130 may obtain vertex coordinates for each of the divided planes and generate a three-dimensional model consisting of a virtual wall and a virtual floor based on the obtained vertex coordinates.

The processor 130 may identify walls, floors, and objects placed in real space from the spatial image. The processor 130 may obtain depth information and color information of real space from a spatial image, and identify an object based on at least one of the obtained depth information and color information. In one embodiment of the present disclosure, the processor 130 can identify the 3D position coordinate values of the wall and the floor through plane recognition technology, and uses the z-axis coordinate information of the identified 3D position coordinate value of the wall and the floor. If a depth value other than the configured depth value is obtained, it can be determined to be an object. When it is difficult to identify an object using depth information, the object can be identified using color information obtained from a spatial image. Processor 130 may distinguish between recognized walls and floors and identified objects.

The processor 130 may in-paint an area obscured by an identified object in the form of a 3D model consisting of a virtual wall and a virtual floor. In one embodiment of the present disclosure, the processor 130 may in-paint an area among the wall and floor that is obscured by an object using information in a spatial image. In the present disclosure, 'in-painting' refers to an image processing technology that restores part of an image when that part is obscured, lost, or distorted. In one embodiment of the present disclosure, the processor 130 may in-paint an area obscured by an object using images of the wall and floor portions of the spatial image corresponding to the wall and floor, respectively. However, it is not limited to this, and in another embodiment, the processor 130 may combine the image of the wall and floor portion in the spatial image with the virtual image to in-paint the area obscured by the object on the wall and floor. .

The processor 130 may generate a 3D model of a real space by applying the texture of the in-painting image to a 3D model consisting of a virtual wall and a virtual floor. In one embodiment of the present disclosure, the processor 130 may generate a 3D model of a real space through image processing that applies the texture of an in-painting image to the 3D model form.

In one embodiment of the present disclosure, the processor 130 may store the generated 3D model in the 3D model database 148 in the memory 140. A specific embodiment in which the processor 130 performs in-painting to generate a three-dimensional model of real space will be described in detail with reference to FIGS. 5 to 8.

The augmented reality device 100 may further include an input interface that receives a user input for selecting a specific object on the spatial image. For example, the input interface may include a keyboard, mouse, touch screen, or voice input device (eg, microphone), and other input devices that will be apparent to those skilled in the art. In one embodiment of the present disclosure, the display unit 150 is composed of a touch screen including a touch panel, and the touch screen receives a user's touch input to select a specific object on the spatial image displayed on the display unit 150. You can receive it. The processor 130 may select an object based on a touch input received from the user. However, it is not limited to this, and in another embodiment of the present disclosure, when the augmented reality device 100 is implemented as glasses-shaped augmented reality glass, the input interface is configured so that the gaze directions of both eyes of the user converge. It may include a gaze tracking sensor that detects the gaze point. In this case, the processor 130 may select the object where the gaze point detected by the eye tracking sensor is located. In another embodiment, when the augmented reality device 100 is implemented as a head mounted display device, the processor 130 may select an object based on a user input received through an external controller.

The segmentation module 144 classifies the class or category of the object in the spatial image, distinguishes the object from other objects or background images in the spatial image according to the classification result, and divides the object from the spatial image. It consists of instructions or program code related to functions and/or operations. The processor 130 may recognize an object selected by a user input and perform segmentation by executing the instructions or program code of the segmentation module 144 and segmenting the recognized object from the spatial image. In one embodiment of the present disclosure, the processor 130 may obtain image information, two-dimensional position coordinate information, and depth value information of an object selected by user input from a spatial image. The processor 130 performs 2D segmentation of the object based on at least one of image information of the object, 2D position coordinate information, depth information, information about the plane obtained through plane recognition, and object classification information. can be performed. In the present disclosure, '2D segmentation' refers to an image processing technique that distinguishes an object in an image from other objects or a background image and divides a 2D outline (outlier) of the object from the image. In one embodiment of the present disclosure, two-dimensional segmentation not only divides the two-dimensional outline of the object, but also classifies the class or category of the object, and classifies the object within the image as another object or category according to the classification result. It can encompass the concept of distinguishing it from the background image.

In one embodiment of the present disclosure, the processor 130 uses a pre-trained deep neural network model to classify a plurality of objects into labels, classes, or categories. You can use this to segment objects selected by user input. A deep neural network model applies tens to hundreds of millions of images as input data, and applies the labels of objects included in the images as the output ground truth, which is an artificial artificial intelligence consisting of model parameters learned (pre-trained). It could be an intelligence model. Deep neural network models include, for example, Convolutional Neural Network (CNN), Recurrent Neural Network (RNN), Restricted Boltzmann Machine (RBM), Deep Belief Network (DBN), and Bidirectional Recurrent Deep Network (BRDNN). Neural Network) and Deep Q-Networks. The deep neural network model may be stored in memory 140, but is not limited thereto. In one embodiment of the present disclosure, the deep neural network model is stored in an external server, the augmented reality device 100 transmits image data of a spatial image to the server, and the classification result of the object is an inference result from the deep neural network model of the server. You may also receive information about.

A specific embodiment in which the processor 130 divides an object selected by user input through two-dimensional segmentation using a previously learned deep neural network model will be described in detail with reference to FIG. 9.

The processor 130 may perform three-dimensional segmentation to divide an object from real space on a spatial image by executing instructions or program code of the segmentation module 144. 3D segmentation may be performed in different ways depending on whether a 3D model for the object selected by user input is stored in the 3D model database 148. In one embodiment of the present disclosure, when a 3D model for an object selected by user input is previously stored in the 3D model database 148, the processor 130 stores the previously stored 3D model in the 3D model database ( 148), and rotate the direction of the acquired 3D model in the Z-axis direction to place the 3D model on the spatial image so that it overlaps the outline (outlier) of the 2D segmentation on the spatial image. . The processor 130 may obtain 3D position coordinate values for an object from a placed 3D model. The processor 130 may perform 3D segmentation to segment an object from a spatial image based on the obtained 3D position coordinate values.

In another embodiment of the present disclosure, if the 3D model for the object selected by the user input is not stored in the 3D model database 148, the processor 130 retrieves the object's edges and feature points from the spatial image. (feature point), and 3D position coordinate values of pixels are acquired, and 3D vertex modeling is performed based on at least one of the obtained object's boundary line, feature point, and 3D position coordinate value of pixels. can do. The processor 130 may perform 3D segmentation to divide an object from a spatial image through 3D vertex modeling.

A specific embodiment in which the processor 130 performs 3D segmentation in different ways depending on whether a 3D model for the object selected by user input is stored will be described in detail with reference to FIGS. 10 to 12. .

The rendering module 146 consists of commands or program codes related to the function and/or operation of rendering an area into which an object is divided through 3D segmentation using a 3D model. The processor 130 executes the instructions or program code of the rendering module 146 to place a 3D model of the wall and floor at the location of the wall and floor in the actual space, and the object selected by the user input is 3. When dimensional segmentation is performed, areas erased due to 3D segmentation can be rendered. In one embodiment of the present disclosure, the processor 130 may delete the original image of the area where 3D segmentation was performed and then render it. However, it is not limited to this, and in another embodiment of the present disclosure, the processor 130 simply renders the 3D model of the wall and floor without the need to delete the area where 3D segmentation was performed, and displays the object image in real space. It can be placed in . In this case, the processor 130 may set a depth testing value so that a real object can be rendered on the 3D model by adjusting the depth value between the 3D model and the object.

The 3D model database 148 is a storage space in the memory 140 that stores a 3D model of the shape of walls and floors in real space created by the processor 130. In one embodiment of the present disclosure, the 3D model database 148 may store a 3D model for an object. Here, the 3D model of the object stored in the 3D model database 148 may be, for example, a 3D model of an object in an indoor space such as furniture such as a sofa, dining table, table, or chair, TV, lighting, etc. It is not limited to this.

The 3D model database 148 may be comprised of non-volatile memory. Non-volatile memory refers to a storage medium that stores and maintains information even when power is not supplied, and can use the stored information again when power is supplied. Non-volatile memory is, for example, flash memory, hard disk, solid state drive (SSD), multimedia card micro type, card type memory (e.g. SD or It may include at least one of (XD memory, etc.), Read Only Memory (ROM), magnetic memory, magnetic disk, and optical disk.

In FIG. 3, the 3D model database 148 is shown as a component included in the memory 140, but it is not limited thereto. In one embodiment of the present disclosure, the 3D model database 148 may be configured as a separate database from the memory 140. In another embodiment of the present disclosure, the 3D model database 148 is not the augmented reality device 100, but is a component of an external third device or external server, and is connected to the augmented reality device 100 through a wired or wireless communication network. can be connected

The display unit 150 is configured to display a spatial image captured through the camera 110 and a three-dimensional model of real space. The display unit 150 may include, for example, a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, It may consist of at least one of a 3D display and an electrophoretic display. In one embodiment of the present disclosure, when the augmented reality device 100 is composed of glasses-type augmented reality glasses, the display unit 150 may further include an optical engine that projects a virtual image. The optical engine is configured to generate light of a virtual image and may be comprised of a projector including an imaging panel, an illumination optical system, a projection optical system, etc. The optical engine may be placed, for example, in the frame or temples of spectacle-type augmented reality glasses.

FIG. 4 is a flowchart illustrating a method of operating the augmented reality device 100 according to an embodiment of the present disclosure.

Referring to FIG. 4, in step S410, the augmented reality device 100 recognizes a plane including a wall and a floor from a spatial image obtained by photographing a real space. In one embodiment of the present disclosure, the augmented reality device 100 detects a horizontal plane and a vertical plane from a spatial image using plane detection technology, and the detected horizontal plane and Walls and floors in real space can be recognized from the vertical plane. However, it is not limited to this, and the augmented reality device 100 may recognize a plane consisting of a window or a door as well as a wall and a floor from a spatial image. In one embodiment of the present disclosure, the augmented reality device 100 may determine whether the recognized plurality of planes are the same plane through location information, and if they are the same plane, integrate them into one plane.

In step S420, the augmented reality device 100 expands the wall and floor according to the recognized plane, and performs 3D in-painting on the area obscured by the object among the expanded wall and floor using a spatial image. ) to create a three-dimensional model of real space. In one embodiment of the present disclosure, the augmented reality device 100 derives the planar equations of the recognized walls and floors, and expands the walls and floors based on the derived planar equations, thereby forming 3 of the virtual walls and the virtual floors. A dimensional model form can be obtained. The augmented reality device 100 can identify walls, floors, and objects placed in real space from spatial images. In one embodiment of the present disclosure, the augmented reality device 100 may obtain depth information and color information of real space from a spatial image, and identify an object based on at least one of the obtained depth information and color information. The augmented reality device 100 may in-paint an area obscured by an object identified in a 3D model composed of a virtual wall and a virtual floor. In the present disclosure, 'in-painting' refers to an image processing technology that restores part of an image when that part is obscured, lost, or distorted. In one embodiment of the present disclosure, the augmented reality device 100 may in-paint an area obscured by an object among a virtual wall and a virtual floor using information of a spatial image. A specific embodiment in which the augmented reality device 100 generates a 3D model of a real space through 3D in-painting will be described in detail with reference to FIGS. 5 to 8.

In step S430, the augmented reality device 100 performs 2D segmentation to segment the object selected by the user input from the spatial image. In one embodiment of the present disclosure, the augmented reality device 100 may receive a user input for selecting a specific object on a spatial image. For example, the augmented reality device 100 may include a touch screen including a touch panel, and may receive a touch input from a user who selects a specific object on a spatial image displayed through the touch screen. The augmented reality device 100 may recognize an object selected by a user input and perform segmentation to divide the recognized object from the spatial image. In one embodiment of the present disclosure, the augmented reality device 100 may obtain image information, two-dimensional position coordinate information, and depth value information of an object selected by user input from a spatial image. The augmented reality device 100 performs two-dimensional segmentation (2D) for an object based on at least one of image information of the object, two-dimensional position coordinate information, depth information, information about the plane obtained through plane recognition, and object classification information. segmentation) can be performed.

In one embodiment of the present disclosure, the augmented reality device 100 uses a pre-trained deep neural network model to classify objects into labels, classes, or categories. Using this, you can segment objects.

In step S440, the augmented reality device 100 performs 3D segmentation to segment an object from real space on a spatial image based on a 3D model or 3D location information of the selected object. In one embodiment of the present disclosure, when a 3D model for an object selected by user input is previously stored in the storage space within the augmented reality device 100, the augmented reality device 100 loads the previously stored 3D model. 3D segmentation can be performed by (loading) and using the acquired 3D model to segment the object from the spatial image. In one embodiment of the present disclosure, when the 3D model for the object selected by the user input is not already stored, the augmented reality device 100 uses the edges and feature points of the object obtained from the spatial image. ), and 3D segmentation may be performed to segment the object from the spatial image based on at least one of the 3D position coordinate values of the pixels.

FIG. 5 is a flowchart illustrating a method by which the augmented reality device 100 generates a three-dimensional model of a real space according to an embodiment of the present disclosure.

Steps S510 to S550 shown in FIG. 5 are steps that embody step S420 shown in FIG. 4. S510 of FIG. 5 may be performed after step S410 shown in FIG. 4 is performed. After S550 of FIG. 5 is performed, step S430 shown in FIG. 4 may be performed.

Hereinafter, steps S510 to S550 will be described with reference to the embodiment shown in FIGS. 6 to 8.

In step S510, the augmented reality device 100 derives a plane equation from each of the recognized planes including the wall and floor. In one embodiment of the present disclosure, the augmented reality device 100 starts an augmented reality session by executing an application, and retrieves a spatial image of the real space through plane detection of the augmented reality session. Horizontal plane and vertical plane can be detected. The augmented reality device 100 can recognize walls and floors in the real space from the detected horizontal and vertical planes. At this time, the augmented reality session can independently determine whether the real space is a suitable environment for performing augmented reality space recognition and report that it has been stably recognized. In one embodiment of the present disclosure, the augmented reality device 100 determines whether the recognized plurality of planes are the same plane through location information, and the plurality of planes determined to be the same plane may be combined into one plane. .

FIG. 6 shows an operation of the augmented reality device 100 according to an embodiment of the present disclosure to obtain a three-dimensional model shape 610 regarding the shape of the planes P ₁ to P ₃ in the real space 600. It is a drawing. Referring to FIG. 6 together with step S510 of FIG. 5, the augmented reality device 100 extracts three-dimensional position coordinate values of three points from each of a plurality of planes (P ₁ to P ₃ ) recognized in the spatial image. You can. In one embodiment of the present disclosure, the processor 130 (see FIG. 3) of the augmented reality device 100 stores depth values of a plurality of points from each of the plurality of planes (P ₁ to P ₃ ) recognized through the augmented reality session. You can obtain depth information and select three points with high reliability. Here, the 'confidence value' is calculated by the augmented reality session, and when the orientation of the augmented reality device 100 changes or the FOV (Field of View) changes, the IMU sensor 120 (see FIG. 3) It can be calculated based on sensor noise of feature points measured by . For example, the smaller the sensor noise, the higher the reliability of the feature point can be calculated. In one embodiment of the present disclosure, when the reliability of the points extracted from each of the plurality of planes (P ₁ to P ₃ ) is the same, the processor 130 randomly selects three points from the plurality of points with the same reliability. You can. Referring to the embodiment shown in FIG. 6, the processor 130 extracts three highly reliable points (611, 612, 613) from the first plane (P ₁ ) and from the second plane (P ₂ ). Three points (621, 622, 623) can be extracted. Although not shown in the drawing, the processor 130 may extract three points from the third plane (P ₃ ).

The processor 130 may derive a plane equation based on the three-dimensional position coordinate values of three points extracted from each of the plurality of planes (P ₁ to P ₃ ). In one embodiment of the present disclosure, if the angle at which the plurality of planes (P ₁ to P ₃ ) meet is less than or equal to a threshold, the processor 130 may determine the points to be a single plane and integrate them into one plane equation. The processor 130 may obtain normal vectors of the second plane (P ₂ ) and the third plane (P ₃ ), which are walls, using the measured values of the IMU sensor 120 (see FIG. 3). The processor 130 may identify whether the obtained normal vector of the wall and the normal vector of the first plane (P ₁ ), which is the floor, form an angle of 90°. If the angle formed by the normal vector of the first plane (P ₁ ), which is the floor, and the normal vectors of the second plane (P ₂ ) and the third plane (P ₃ ), which are the walls, is ±3° to ±5° different from 90°. In this case, the processor 130 may proceed with plane recognition again.

Referring again to FIG. 5 , in step S520, the augmented reality device 100 acquires three-dimensional model shapes of the virtual wall and the virtual floor by expanding the wall and the floor based on the plane equation. Referring to FIG. 6 together, the processor 130 of the augmented reality device 100 expands a plurality of planes (P ₁ , P ₂ , P ₃ ) through a plane equation to create virtual planes (P ₁ ', P ₂ ', P ₃ ') can be generated. For example, the first plane (P ₁ ), which is the floor, extends to the virtual floor (P ₁ '), and the second plane (P ₂ ) and the third plane (P ₃ ), which are the walls, respectively extend to the virtual wall (P ₂ ', P ₃ '). In one embodiment of the present disclosure, the processor 130 extracts the intersection lines (l ₁ , l ₂ , l ₃ ) where the extended virtual planes (P ₁ ', P ₂ ', and P ₃ ') meet, and extracts Based on the intersection lines (l ₁ , l ₂ , l ₃ ), the virtual floor (P ₁ ') and the virtual wall (P ₂ ', P ₃ ') can be distinguished. The processor 130 acquires vertex coordinates (V 1 to V ₉ ) of each of the divided virtual planes (P ₁ ', P _{2 '} , and P ₃ '), and calculates the obtained vertex coordinates (V ₁ to V ₉ ), a three-dimensional model shape 610 consisting of a virtual floor (P ₁ ') and virtual walls (P ₂ ', P ₃ ') can be obtained.

The processor 130 may store the 3D model form 610 in a storage space within the augmented reality device 100. In one embodiment of the present disclosure, the processor 130 may store the 3D model shape 610 and location information in the 3D model database 148 (see FIG. 3) in the memory 140 (see FIG. 3).

Referring again to FIG. 5, in step S530, the augmented reality device 100 identifies walls, floors, and objects placed in real space from the spatial image. In one embodiment of the present disclosure, the augmented reality device 100 may distinguish a wall, a floor, and an object using depth information and color information based on plane recognition information of the wall and floor.

FIG. 7A is a diagram illustrating an operation of the augmented reality device 100 according to an embodiment of the present disclosure to distinguish between a wall and a floor plane in a spatial image 700a. Referring to step S530 of FIG. 5 together with FIG. 7A, the processor 130 of the augmented reality device 100 recognizes a plurality of planes 711, 721, and 722 using plane recognition technology and creates a spatial image 700a. ) The floor surface 711 and the wall surfaces 721 and 722 can be distinguished among the plurality of planes 711, 721, and 722 based on the color information obtained from ).

FIG. 7B is a diagram illustrating an operation of the augmented reality device 100 according to an embodiment of the present disclosure to distinguish between the planes of a wall and a window within a spatial image 700b. Referring to step S530 of FIG. 5 together with FIG. 7B, the processor 130 of the augmented reality device 100 selects a plurality of planes 721, 722, 731, and 732 from the spatial image 700b using plane recognition technology. can be recognized, and the walls 721 and 722 and the windows 731 and 732 can be distinguished based on the depth information of the real space and the color information of the spatial image 700b.

FIG. 7C is a diagram illustrating an operation of the augmented reality device 100 according to an embodiment of the present disclosure to distinguish between a wall and a floor plane with different patterns in a spatial image 700c. Referring to step S530 of FIG. 5 together with FIG. 7C, the processor 130 of the augmented reality device 100 recognizes a plurality of planes 711, 721, and 723 from the spatial image 700c using plane recognition technology. And, the floor surface 711 and the wall surfaces 721 and 723 can be recognized based on the depth information of the real space. The processor 130 may obtain color information of the spatial image 700c and distinguish between wall surfaces 721 and 723 with different patterns based on the obtained color information.

The processor 130 of the augmented reality device 100 acquires three-dimensional position coordinate values in real space through an augmented reality session, and determines it to be an object if the depth value composed of z-axis coordinate information is not identified as a wall or floor. You can. In one embodiment of the present disclosure, when it is difficult to identify an object using depth information, the processor 130 may identify the object using color information obtained from a spatial image.

FIG. 8 is a diagram illustrating an operation of the augmented reality device 100 performing 3D in-painting according to an embodiment of the present disclosure. Referring to step S530 of FIG. 5 together with FIG. 8, the processor 130 of the augmented reality device 100 acquires a spatial image 800 of the real space through an augmented reality session, and obtains a wall surface (800) from the spatial image 800. 810) and object 820 can be recognized. The processor 130 may obtain three-dimensional position coordinate values in real space and identify an area where the depth value, which is z-axis coordinate information, is different from the wall surface 810 as the object 820 . In one embodiment of the present disclosure, the processor 130 may obtain color information of the spatial image 800 and identify an area with a color that is significantly different from the color of the wall 810 as an object 820. there is. In the embodiment shown in FIG. 8, the processor 130 may distinguish the wall 810 and the object 820 (e.g., a chair) based on depth information of the real space and color information of the spatial image 800. .

Referring again to FIG. 5, in step S540, the augmented reality device 100 in-paints the area obscured by the object among the wall and floor using information of the spatial image. The augmented reality device 100 can check areas obscured by objects on the walls and floor of the spatial image. Referring to FIG. 8 , the processor 130 of the augmented reality device 100 may identify an area 830 obscured by an object from the spatial image 800. The processor 130 may in-paint the area 830 obscured by the object among the wall and floor areas using color information of the spatial image 800. In the present disclosure, 'in-painting' refers to an image processing technology that restores part of an image when that part is obscured, lost, or distorted.

The processor 130 may in-paint the hidden area 830 in the form of a 3D model using images of the wall and floor portions of the spatial image 800. In one embodiment of the present disclosure, the processor 130 may perform in-painting separately for each wall and floor. If a window, etc. is recognized separately from the wall and floor, the processor 130 may perform in-painting separately for the wall, floor, and window. In the embodiment shown in FIG. 8, the processor 130 in-paints the area 830 hidden by the object using the color information of the wall surface 810 of the spatial image 800 and creates an in-painting image 840. can be obtained.

The processor 130 combines the image of the wall and floor portion in the space image 800 with the virtual image to create an area corresponding to the area 830 obscured by the object in the virtual wall and virtual floor in the form of a 3D model. You can in-paint.

Referring again to FIG. 5, in step S550, the augmented reality device 100 applies the texture of the in-painting image to the 3D model form of the virtual wall and the virtual floor to create a 3D model of the real space. Create. Referring to FIG. 8 , the processor 130 of the augmented reality device 100 may perform image processing by applying the in-painting image 840 as a texture to the generated 3D model shape. For example, the processor 130 may generate a 3D model of real space by applying the in-painting image 840 to the 3D model form obtained in step S520.

In one embodiment of the present disclosure, the augmented reality device 100 stores the 3D model generated through in-painting in a 3D model database 148 (see FIG. 3) in a storage space (e.g., memory 140 (see FIG. 3)). 3) can be saved in.

FIG. 9 is a diagram illustrating an operation of the augmented reality device 100 performing 2D segmentation from a spatial image 900 according to an embodiment of the present disclosure.

Referring to FIG. 9, the augmented reality device 100 starts an augmented reality session by executing an augmented reality application, and photographs the real space 10 using the camera 110 (see FIG. 3). A spatial image 920 may be acquired. The augmented reality device 100 can acquire three-dimensional location information of the real space 10 and recognize walls, floors, and objects using plane detection technology. At this time, the augmented reality session can independently determine whether the real space is a suitable environment for performing augmented reality space recognition and report that it has been stably recognized.

The augmented reality device 100 acquires 3D location information of the real space 10 through an augmented reality session, and creates a depth map 910 consisting of depth information that is the z-axis coordinate value among the 3D location coordinate values. can be obtained.

The augmented reality device 100 recognizes the planes (P ₁ , P ₂ , P ₃ ) of the wall and floor using plane recognition technology, and expands the recognized planes (P ₁ , P ₂ , P ₃ ). A 3D model form 930 can be obtained. Since the specific method by which the augmented reality device 100 acquires the 3D model form 930 is the same as the method described in FIGS. 5 and 6, overlapping descriptions will be omitted.

The augmented reality device 100 may receive a user input for selecting a specific object on a spatial image displayed through the display unit 150. In one embodiment of the present disclosure, the display unit 150 is configured with a touch screen, and the augmented reality device 100 receives a user's touch input for selecting a specific object in the spatial image 920 displayed through the touch screen. can do. In the embodiment shown in FIG. 9 , the augmented reality device 100 may receive a user's touch input for selecting a table in the spatial image 920 .

When a user input for selecting an object is received, the processor 130 (see FIG. 3) of the augmented reality device 100 converts image information and depth information (depth values of pixels constituting the object into a 2D image) of the object selected by the user input. depth map data expressed as), two-dimensional position coordinate value information (x-axis and y-axis coordinate values) on the spatial image 920 of the selected object, two-dimensional position coordinate value information (x) of key feature points (AR feature points) axis and y-axis coordinate values), and 3D position coordinate values (x-axis, y-axis, and z-axis coordinate values) information can be obtained. The processor 130 recognizes the planes of the wall and floor (P ₁ , P ₂ , and P ₃ ) using plane recognition technology, and identifies objects such as furniture or home appliances in real space based on depth information, Positional relationships between identified objects and walls and floors can be recognized.

The augmented reality device 100 includes depth information of the depth map 910, a spatial image 920, two-dimensional position coordinates of an object selected by the user, wall and floor planes obtained from a three-dimensional model shape 930, and an object. Using classification information, objects selected by user input can be two-dimensionally segmented. Here, '2D segmentation' refers to an image processing technology that distinguishes an object in an image from other objects or a background image and divides the 2D outline (outlier) of the object from the image. In one embodiment of the present disclosure, two-dimensional segmentation not only divides the two-dimensional outline of the object, but also classifies the class or category of the object, and classifies the object within the image as another object or category according to the classification result. It can encompass the concept of distinguishing it from the background image.

In one embodiment of the present disclosure, the processor 130 of the augmented reality device 100 includes depth information of the depth map 910, image information of the spatial image 920, and object information in the previously learned deep neural network model 940. Two-dimensional segmentation of an object can be performed by inputting at least one of two-dimensional position coordinate information, plane recognition information, and object classification information, and performing inference using the deep neural network model 940. The deep neural network model 940 applies tens of thousands to hundreds of millions of images as input data, and applies the label value of the object included in the image as the output ground truth to be used as a pre-trained model parameter. It may be an artificial intelligence model that is constructed. In one embodiment of the present disclosure, the deep neural network model 940 may be an artificial intelligence model that has been previously learned for each furniture, home appliance, or category within the furniture, such as a chair or sofa. The deep neural network model 940 is, for example, a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), and a BRDNN ( It may include at least one of Bidirectional Recurrent Deep Neural Network and Deep Q-Networks.

The processor 130 may obtain a segmentation image 950 in which the two-dimensional outline of the object 952 is divided from another object or background image through inference using the deep neural network model 940.

FIG. 10 is a flowchart illustrating a method in which the augmented reality device 100 performs 3D segmentation based on whether a 3D model for an object is stored according to an embodiment of the present disclosure.

Steps S1010 to S1070 shown in FIG. 10 are steps that embody step S440 shown in FIG. 4. S1010 of FIG. 10 may be performed after step S430 shown in FIG. 4 is performed.

In step S1010, the augmented reality device 100 checks whether a 3D model for a previously stored object exists. The processor 130 (see FIG. 3) of the augmented reality device 100 may check whether a 3D model for the object selected by the user input is stored in the storage space within the memory 140 (see FIG. 3). The 3D segmentation method shown in FIG. 10 can be performed in different ways depending on whether a 3D model for the object is previously stored. An embodiment in which a 3D model for an object is already stored will be described with reference to FIG. 11 , and an embodiment in which a 3D model for an object is not stored will be described with reference to FIG. 12 .

If the 3D model for the object is already stored (step S1020), the augmented reality device 100 adjusts the direction of the 3D model so that it overlaps the outline (outlier) of the 2D segmentation on the spatial image. Place . FIG. 11 is a diagram illustrating an operation in which the augmented reality device 100 performs 3D segmentation using a previously stored 3D model of an object according to an embodiment of the present disclosure. Referring to step S1020 of FIG. 10 together with FIG. 11, 3D models 1101 to 1103 for a plurality of objects may be stored in the 3D model database 148. The processor 130 (see FIG. 3) of the augmented reality device 100 selects the first object selected by user input among the 3D models 1101 to 1103 for a plurality of objects previously stored in the 3D model database 148. The 3D model 1101 may be identified, and the 3D model 1101 of the identified first object may be loaded from the 3D model database 148. The processor 130 may rotate the three-dimensional model 1101 of the loaded first object along the Z axis until it has the same shape as the two-dimensional outline generated in the spatial image 1100 according to the two-dimensional segmentation result. . At this time, the resolution of the rotation angle can be freely set according to the required accuracy. The processor 130 may place the 3D model 1101 of the first object, the orientation of which has been adjusted according to the rotation result, on a 2D outline on the spatial image 1100.

Referring again to FIG. 10 , in step S1030, the augmented reality device 100 acquires 3D position coordinate values for an object from a placed 3D model. Referring to FIG. 11 together, the three-dimensional model 1101 of the first object is arranged to fit the two-dimensional outline on the spatial image 1100, and the three-dimensional positions of a plurality of feature points constituting the first object are determined according to the arrangement result. Coordinate values can be obtained.

Referring to FIG. 10, in step S1040, the augmented reality device 100 performs 3D segmentation to divide an object from a spatial image based on the acquired 3D position coordinate value. Referring to FIG. 11 together, the processor 130 of the augmented reality device 100 generates a segmentation image in which the first object is divided from an image in real space based on the three-dimensional position coordinate values of a plurality of feature points constituting the first object. You can obtain (1120).

Referring again to FIG. 10, if the three-dimensional model for the object is not stored (step S1050), the augmented reality device 100 may determine the edges, feature points, and edges of the object recognized from the spatial image. Obtain the 3D position coordinates of pixels. FIG. 12 is a diagram illustrating an operation of the augmented reality device 100 performing 3D segmentation when a 3D model for an object is not stored according to an embodiment of the present disclosure. Referring to step S1050 of FIG. 10 together with FIG. 12, the processor 130 of the augmented reality device 100 determines the boundary line, feature point, and first object 1210 selected by user input within the spatial image 1200. 1 The 3D position coordinate values of the pixels constituting the object 1210 can be obtained.

Referring again to step S1060 of FIG. 10, the augmented reality device 100 performs 3D vertex modeling based on at least one of the object's boundary line, feature points, and 3D position coordinate values of pixels. Referring to FIG. 12 together, the processor 130 of the augmented reality device 100 inputs the three-dimensional position coordinate values of the boundary lines, feature points, and pixels of the object into a previously learned deep neural network model, and uses the deep neural network model. Thus, 3D vertex modeling can be performed. The deep neural network model may be a pre-trained artificial intelligence model for each furniture, home appliance, or category within furniture, such as a chair or sofa. Deep neural network models include, for example, Convolutional Neural Network (CNN), Recurrent Neural Network (RNN), Restricted Boltzmann Machine (RBM), Deep Belief Network (DBN), and Bidirectional Recurrent Deep Network (BRDNN). Neural Network) and Deep Q-Networks. However, the deep neural network model of the present disclosure is not limited to the above-described examples.

Referring again to step S1070 of FIG. 10, the augmented reality device 100 performs 3D segmentation to divide an object from a spatial image through 3D vertex modeling. Referring to FIG. 12 together, the processor 130 of the augmented reality device 100 may obtain the 3D position coordinate value of the first object 1220 through 3D vertex modeling. The processor 130 may obtain a segmentation image 1230 in which the first object 1220 is divided from the spatial image 1200 based on the three-dimensional position coordinate values of a plurality of pixels constituting the first object 1220. there is.

FIG. 13 is a flowchart illustrating a method by which the augmented reality device 100 places a 3D model in real space and performs rendering using the 3D model according to an embodiment of the present disclosure.

Step S1310 shown in FIG. 13 may be performed after step S440 shown in FIG. 4 is performed.

In step S1310, the augmented reality device 100 places the generated 3D model on the walls and floors in real space.

In step S1320, the augmented reality device 100 renders the area where the object is divided through 3D segmentation using a 3D model. When an object selected by a user input is segmented through 3D segmentation, the augmented reality device 100 can render the area erased due to 3D segmentation using a 3D model. In one embodiment of the present disclosure, the augmented reality device 100 may render the original image of the area where 3D segmentation was performed after deleting it. However, it is not limited to this, and in another embodiment of the present disclosure, the augmented reality device 100 simply renders the 3D model of the wall and floor without the need to delete the area where 3D segmentation was performed, and It can be placed on an object. In this case, the augmented reality device 100 may set a depth testing value so that a real object can be rendered on the 3D model by adjusting the depth value between the 3D model and the object.

FIG. 14 is a flowchart illustrating a method by which the augmented reality device 100 additionally performs 3D segmentation and updates the segmentation result according to an embodiment of the present disclosure.

Step S1410 shown in FIG. 14 may be performed after step S440 shown in FIG. 4 is performed.

In step S1410, the augmented reality device 100 tracks the 3D segmentation result within the augmented reality space. In one embodiment of the present disclosure, when the orientation of the augmented reality device 100 is changed or the field of view (FOV) is changed due to a user's manipulation, the augmented reality device 100 is connected to the IMU sensor 120 (see FIG. 3). ) can be used to track the divided area due to 3D segmentation in the augmented reality space. Real-time 3D segmentation of objects is possible through tracking operations.

In step S1420, the augmented reality device 100 additionally acquires a spatial image related to the real space. The augmented reality device 100 can execute an augmented reality application, photograph a real space through a camera 110 (see FIG. 3), and additionally acquire a spatial image through this. In one embodiment of the present disclosure, the augmented reality device 100 may periodically acquire spatial images at preset time intervals.

In step S1430, the augmented reality device 100 performs two-dimensional segmentation on the additionally acquired spatial image to extract the outline (outlier) of the object. The operation of the augmented reality device 100 to extract the outline of an object by performing two-dimensional segmentation is the same as the operation method described in FIG. 9, and thus redundant description will be omitted.

In step S1440, the augmented reality device 100 measures similarity by comparing the outline of the area into which the object is divided through 3D segmentation with the outline extracted through 2D segmentation.

In step S1450, the augmented reality device 100 compares the measured similarity with a preset threshold (α).

If the measured similarity is less than the threshold α (step S1460), the augmented reality device 100 additionally performs 3D segmentation. If the similarity is less than the threshold α, the augmented reality device 100 may recognize that an error has occurred in the 3D segmentation result due to an orientation change or FOV change.

In step S1470, the augmented reality device 100 updates the segmentation result through additionally performed 3D segmentation.

If the measured similarity exceeds the preset threshold α, the augmented reality device 100 may return to step S1420 and repeatedly perform the operation of acquiring additional spatial images.

The present disclosure provides an augmented reality device 100 that provides an augmented reality service that controls objects in real space. The augmented reality device 100 according to an embodiment of the present disclosure includes a camera (110, see FIG. 3), an accelerometer (122, see FIG. 3), and a gyro sensor (124, see FIG. 3). An IMU sensor (Inertial Measurement Unit) 120 (see FIG. 3) including an IMU sensor, a memory 140 (see FIG. 3) storing at least one instruction, and at least one processor executing the at least one instruction. It may include (130, see FIG. 3). The at least one processor 130 may obtain a spatial image by photographing real space using the camera 110. The at least one processor 130 may recognize a plane including a wall and a floor from the acquired spatial image. The at least one processor 130 expands the wall and floor according to the recognized plane, and performs 3D in-painting on the area obscured by the object among the expanded wall and floor using a spatial image, thereby expanding the wall and floor in real space. A 3D model can be created. The at least one processor 130 may perform 2D segmentation to segment an object selected by user input from a spatial image. The at least one processor 130 may perform 3D segmentation to segment an object from real space on a spatial image based on a 3D model or 3D location information of the object.

In one embodiment of the present disclosure, the at least one processor 130 places the generated 3D model at the location of the wall and floor in real space, and creates a 3D model by dividing the area into which the object is divided through 3D segmentation. You can use it for rendering.

In one embodiment of the present disclosure, the at least one processor 130 may derive a plane equation from each of the recognized planes including the wall and the floor. The at least one processor 130 may obtain three-dimensional model shapes of the virtual wall and the virtual floor by expanding the wall and the floor based on the derived plane equation. The at least one processor 130 may identify walls, floors, and objects placed in real space from the spatial image. The at least one processor 130 may in-paint the area covered by the identified object among the wall and floor using information of the spatial image. The at least one processor 130 may generate a 3D model of a real space by applying the texture of the in-painting image to the 3D model form of the virtual wall and the virtual floor.

In one embodiment of the present disclosure, the at least one processor 130 may extract an intersection line where an extended wall and the floor meet, and distinguish planes of the wall and the floor based on the extracted intersection line. The at least one processor 130 may obtain vertex coordinates for each of the divided planes and generate a three-dimensional model of the virtual wall and virtual floor based on the obtained vertex coordinates.

In one embodiment of the present disclosure, the at least one processor 130 may identify an object based on at least one of depth information and color information in real space obtained from a spatial image. At least one processor 130 may distinguish between recognized walls and floors and identified objects.

In one embodiment of the present disclosure, the at least one processor 130 may store the generated 3D model in a storage space within the memory 140.

In one embodiment of the present disclosure, the at least one processor 130 checks whether a 3D model for the selected object is already stored in the memory 140, and as a result of the confirmation, the 3D model for the selected object is stored. If so, the 3D model can be arranged to overlap the outline (outlier) of the 2D segmentation on the spatial image by adjusting the direction of the previously stored 3D model. At least one processor 130 may obtain 3D position coordinate values for an object from a placed 3D model. At least one processor 130 may perform 3D segmentation to segment an object from a spatial image based on the obtained 3D position coordinate values.

In one embodiment of the present disclosure, the at least one processor 130 checks whether a 3D model for the selected object is stored in the memory 140, and as a result of the confirmation, the 3D model for the selected object is stored. If not, the three-dimensional position coordinate values of the edges, feature points, and pixels of the recognized object can be obtained from the spatial image. At least one processor 130 may perform 3D vertex modeling based on at least one of the obtained object boundary, feature points, and 3D position coordinate values of pixels. At least one processor 130 may perform 3D segmentation to divide an object from a spatial image through 3D vertex modeling.

In one embodiment of the present disclosure, the at least one processor 130 additionally acquires a spatial image when the orientation or field of view of the augmented reality device 100 changes, and the additionally acquired spatial image The outline of the object can be extracted by performing 2D segmentation. The at least one processor 130 may measure similarity by comparing the 2D outline of the area where the object is divided through 3D segmentation with the extracted outline. The at least one processor 130 may determine whether to additionally perform 3D segmentation by comparing the similarity with a preset threshold.

In one embodiment of the present disclosure, when the similarity is less than a threshold, the at least one processor 130 may additionally perform 3D segmentation and update the segmentation result through the additionally performed 3D segmentation. there is.

The present disclosure provides a method for providing an augmented reality service where the augmented reality device 100 controls objects in real space. The method may include a step (S410) of recognizing a plane including a wall and a floor from a spatial image obtained by photographing a real space using the camera 110. The method expands the walls and floors according to the recognized plane, and uses spatial images to perform 3D in-painting on the areas obscured by objects among the expanded walls and floors to create a 3D model of real space. It may include a step (S420). The method may include performing 2D segmentation (2D segmentation) to segment an object selected by user input from a spatial image (S430). The method may include performing 3D segmentation (3D segmentation) to segment an object from real space on a spatial image based on a 3D model or 3D location information of the object (S440).

In one embodiment of the present disclosure, the method includes placing the generated 3D model at the location of walls and floors in real space (S1310), and using the 3D model to divide the area into which the object is divided through 3D segmentation. A rendering step (S1320) may be further included.

In one embodiment of the present disclosure, the step of generating a three-dimensional model of the real space (S420) may include the step of deriving a plane equation from each of the planes including the recognized walls and floors (S510). . The step of generating a three-dimensional model of the real space (S420) includes the step of acquiring the three-dimensional model form of the virtual wall and virtual floor by expanding the wall and floor based on the derived plane equation (S520). It can be included. The step of generating a 3D model of the real space (S420) may include a step of identifying walls and floors and objects placed in the real space from the space image (S530). The step of generating a 3D model of the real space (S420) may include the step of in-painting the area obscured by the identified object among the walls and floor using information of the spatial image (S540). The step of generating a 3D model of the real space (S420) generates a 3D model of the real space by applying the texture of the in-painting image to the 3D model form of the virtual wall and virtual floor. It may include a step (S550).

In one embodiment of the present disclosure, the step of generating a three-dimensional model form of the virtual wall and the virtual floor (S520) includes extracting an intersection line where the extended wall and the floor meet, and based on the extracted intersection line, the wall and It includes dividing the planes of the floor, acquiring vertex coordinates of each of the divided planes, and generating a three-dimensional model of the virtual wall and virtual floor based on the obtained vertex coordinates. can do.

In one embodiment of the present disclosure, the step (S530) of identifying the wall, the floor, and the object arranged in real space identifies the object based on at least one of depth information and color information in real space obtained from a spatial image. and distinguishing between recognized walls and floors and identified objects.

In one embodiment of the present disclosure, the step of performing the 3D segmentation (S440) includes checking whether a 3D model for the selected object is already stored (S1010), and as a result of the confirmation, a 3D model for the selected object If the model is stored, a step (S1020) of arranging the 3D model to overlap the outline (outlier) of the 2D segmentation on the spatial image by adjusting the direction of the previously stored 3D model may be included. The step of performing the 3D segmentation (S440) may include the step of obtaining 3D position coordinate values for the object from the placed 3D model (S1030). The step of performing 3D segmentation (S440) may include a step of performing 3D segmentation of dividing an object from a spatial image based on the obtained 3D position coordinate value (S1040).

In one embodiment of the present disclosure, the step of performing the 3D segmentation (S440) includes a step of checking (1010) whether a 3D model for the selected object is already stored, and as a result of the confirmation, a 3D model for the selected object. If the model is not stored, a step (S1050) of acquiring the edge, feature point, and 3D position coordinate values of the pixels of the recognized object from the spatial image may be included. The step of performing the 3D segmentation (S440) is a step of performing 3D vertex modeling (S1060) based on at least one of the obtained object's boundary line, feature points, and 3D position coordinate values of pixels. may include. The step of performing 3D segmentation (S440) may include a step of performing 3D segmentation of dividing an object from a spatial image through 3D vertex modeling (S1070).

In one embodiment of the present disclosure, the method additionally acquires a spatial image when the orientation or field of view of the augmented reality device 100 changes, and performs two-dimensional segmentation on the additionally acquired spatial image. A step (S1420) of extracting the outline of the object may be further included. The method may further include a step (S1430) of measuring similarity by comparing the extracted outline with the two-dimensional outline of the area where the object is divided through three-dimensional segmentation. The method may further include a step of determining whether to additionally perform 3D segmentation by comparing the similarity with a preset threshold (S1440).

In one embodiment of the present disclosure, if the similarity is less than a threshold, the method further includes the step of additionally performing 3D segmentation and updating the segmentation result through the additionally performed 3D segmentation (S1460). can do. The step of updating the segmentation results may be performed periodically according to preset time intervals.

The present disclosure provides a computer program product including a computer-readable storage medium. The storage medium includes the operation of recognizing a plane including a wall and a floor from a spatial image obtained by photographing a real space using a camera 110, expanding the wall and a floor according to the recognized plane, and using the spatial image. An operation to create a 3D model of real space by performing 3D in-painting on areas obscured by objects among extended walls and floors, and 2D segmentation (2D) that divides objects selected by user input from the spatial image. The augmented reality device 100 performs an operation of performing segmentation, and an operation of performing 3D segmentation of dividing an object from real space on a spatial image based on a 3D model or 3D location information of the object. In order to perform this, it may include instructions that can be read by the augmented reality device 100.

A program executed by the augmented reality device 100 described in this disclosure may be implemented with hardware components, software components, and/or a combination of hardware components and software components. A program can be executed by any system that can execute computer-readable instructions.

Software may include a computer program, code, instructions, or a combination of one or more of these, and may configure a processing unit to operate as desired, or to process independently or collectively. You can command the device.

Software may be implemented as a computer program including instructions stored on computer-readable storage media. Computer-readable recording media include, for example, magnetic storage media (e.g., read-only memory (ROM), random-access memory (RAM), floppy disk, hard disk, etc.) and optical read media (e.g., CD-ROM). (CD-ROM), DVD (Digital Versatile Disc), etc. The computer-readable recording medium is distributed among computer systems connected to a network, so that computer-readable code can be stored and executed in a distributed manner. The media may be readable by a computer, stored in memory, and executed by a processor.

Computer-readable storage media may be provided in the form of non-transitory storage media. Here, 'non-transitory' only means that the storage medium does not contain signals and is tangible, and does not distinguish between cases where data is stored semi-permanently or temporarily in the storage medium. For example, a 'non-transitory storage medium' may include a buffer where data is temporarily stored.

Additionally, programs according to embodiments disclosed in this specification may be included and provided in a computer program product. Computer program products are commodities and can be traded between sellers and buyers.

A computer program product may include a software program and a computer-readable storage medium on which the software program is stored. For example, a computer program product may be a product in the form of a software program (e.g., a downloadable application) distributed electronically by the manufacturer of the augmented reality device 100 or through an electronic market (e.g., Samsung Galaxy Store). ))) may be included. For electronic distribution, at least a portion of the software program may be stored on a storage medium or created temporarily. In this case, the storage medium may be a storage medium of a server of the manufacturer of the augmented reality device 100, a server of an electronic market, or a relay server that temporarily stores a software program.

The computer program product, in a system comprised of the augmented reality device 100 and/or a server, may include a storage medium of the server or a storage medium of the augmented reality device 100. Alternatively, if there is a third device (eg, a wearable device) in communication connection with the augmented reality device 100, the computer program product may include a storage medium of the third device. Alternatively, the computer program product may include a software program itself that is transmitted from the augmented reality device 100 to a third device or from a third device to an electronic device.

In this case, either the augmented reality device 100 or a third device may execute the computer program product to perform the method according to the disclosed embodiments. Alternatively, at least one of the augmented reality device 100 and the third device may execute the computer program product and perform the methods according to the disclosed embodiments in a distributed manner.

For example, the augmented reality device 100 executes a computer program product stored in the memory 140 (see FIG. 3), and another electronic device (e.g., a wearable device) connected to communication with the augmented reality device 100 is disclosed. It can be controlled to perform the method according to the embodiments.

As another example, a third device may execute a computer program product to control an electronic device communicatively connected to the third device to perform the method according to the disclosed embodiment.

When the third device executes the computer program product, the third device may download the computer program product from the augmented reality device 100 and execute the downloaded computer program product. Alternatively, a third device may perform the methods according to the disclosed embodiments by executing a computer program product provided in a pre-loaded state.

As described above, although the embodiments have been described with limited examples and drawings, various modifications and variations can be made by those skilled in the art from the above description. For example, the described techniques may be performed in a different order than the described method, and/or components, such as a described computer system or module, may be combined or combined in a form different from the described method, or other components or equivalents may be used. Appropriate results can be achieved even if replaced or replaced by .

Claims (20)

camera 110;
an Inertial Measurement Unit (IMU) 120 including an accelerometer 122 and a gyro sensor 124;
a memory 140 that stores at least one instruction; and
At least one processor 130 executing the at least one instruction;
Including,
The at least one processor 130,
Obtain a spatial image by photographing real space using the camera 110,
Recognize a plane including a wall and a floor from the acquired spatial image,
By expanding the wall and floor according to the recognized plane and performing 3D in-painting on the area obscured by the object among the expanded wall and floor using the spatial image, a 3D model of the real space is created. create,
Perform 2D segmentation to segment an object selected by user input from the spatial image,
An augmented reality device 100 that performs 3D segmentation to segment the object from real space on the spatial image based on a 3D model or 3D location information of the object.
According to claim 1,
The at least one processor 130,
Place the generated 3D model at the location of walls and floors in real space,
An augmented reality device 100 that renders the area into which the object is divided through the 3D segmentation using the 3D model.
According to any one of claims 1 and 2,
The at least one processor 130,
Deriving a plane equation from each of the planes including the recognized wall and floor,
Obtaining three-dimensional model shapes of the virtual wall and virtual floor by expanding the wall and floor based on the derived plane equation,
Identifying objects placed in the wall, floor, and real space from the spatial image,
In-painting an area of the wall and floor obscured by the identified object using information from the spatial image,
An augmented reality device 100 that generates a three-dimensional model of the real space by applying a texture of an in-painting image to the three-dimensional model form of the virtual wall and virtual floor.
According to clause 3,
The at least one processor 130,
Extract the intersection line where the expanded wall and floor meet,
Distinguish the planes of the wall and the floor based on the extracted intersection,
Obtain vertex coordinates for each of the divided planes,
An augmented reality device 100 that generates a three-dimensional model shape of the virtual wall and virtual floor based on the acquired vertex coordinates.
According to clause 3,
The at least one processor 130,
Identifying the object based on at least one of depth information and color information in real space obtained from the spatial image,
An augmented reality device (100) that distinguishes between the recognized walls and floors and the identified objects.
According to any one of claims 1 to 5,
The at least one processor 130,
An augmented reality device 100 that stores the generated 3D model in a storage space within the memory 140.
According to any one of claims 1 to 6,
The at least one processor 130,
Check whether a 3D model for the selected object is already stored in the memory 140,
As a result of confirmation, if a 3D model for the selected object is stored, adjusting the direction of the previously stored 3D model to arrange the 3D model so that it overlaps the outline (outlier) of the 2D segmentation on the spatial image,
Obtaining 3D position coordinate values for the object from the placed 3D model,
An augmented reality device 100 that performs 3D segmentation to divide the object from the spatial image based on the acquired 3D position coordinate value.
According to any one of claims 1 to 7,
The at least one processor 130,
Check whether a 3D model for the selected object is stored in the memory 140,
As a result of confirmation, if the 3D model for the selected object is not stored, obtain the 3D position coordinate values of the edges, feature points, and pixels of the object recognized from the spatial image,
Perform 3D vertex modeling based on at least one of the obtained object's boundary line, feature point, and 3D position coordinate value of pixels,
An augmented reality device that performs 3D segmentation to divide the object from the spatial image through the 3D vertex modeling.
According to any one of claims 1 to 8,
The at least one processor 130,
When the orientation or field of view of the augmented reality device 100 changes, the spatial image is additionally acquired, and the outline of the object is extracted by performing two-dimensional segmentation on the additionally acquired spatial image. do,
Similarity is measured by comparing the extracted outline with the two-dimensional outline of the area where the object is divided through the three-dimensional segmentation,
The augmented reality device 100 determines whether to additionally perform the 3D segmentation by comparing the similarity with a preset threshold.
According to clause 9,
The at least one processor 130,
When the similarity is less than the threshold, the augmented reality device 100 additionally performs the 3D segmentation and updates the segmentation result through the additionally performed 3D segmentation.
In the method of providing an augmented reality service where the augmented reality device 100 controls an object in real space,
Recognizing a plane including a wall and a floor from a space image obtained by photographing a real space using the camera 110 (S410);
By expanding the wall and floor according to the recognized plane and performing 3D in-painting on the area obscured by the object among the expanded wall and floor using the spatial image, a 3D model of the real space is created. Generating step (S420);
Performing 2D segmentation to segment an object selected by user input from the spatial image (S430); and
Performing 3D segmentation to segment the object from real space on the spatial image based on a 3D model or 3D location information of the object (S440);
Method, including.
According to claim 11,
Placing the generated 3D model at the positions of walls and floors in real space (S1310); and
Rendering the area into which the object is divided through the 3D segmentation using the 3D model (S1320);
A method further comprising:
According to any one of claims 11 and 12,
The step of generating a three-dimensional model of the real space (S420) is,
Deriving a plane equation from each of the planes including the recognized wall and floor (S510);
Obtaining a three-dimensional model shape of the virtual wall and the virtual floor by expanding the wall and the floor based on the derived plane equation (S520);
Identifying objects placed in the wall, floor, and real space from the space image (S530);
In-painting an area of the wall and floor obscured by the identified object using information from the space image (S540); and
Generating a three-dimensional model of the real space by applying a texture of an in-painting image to the three-dimensional model form of the virtual wall and virtual floor (S550);
Method, including.
According to claim 13,
The step of generating a three-dimensional model shape of the virtual wall and virtual floor (S520),
extracting an intersection line where the expanded wall and floor meet;
distinguishing planes of the wall and the floor based on the extracted intersection;
Obtaining vertex coordinates of each of the divided planes; and
generating a three-dimensional model shape of the virtual wall and virtual floor based on the obtained vertex coordinates;
How to include .
According to claim 13,
The step (S530) of identifying the walls, floors, and objects placed in real space is,
Identifying the object based on at least one of depth information and color information in real space obtained from the spatial image; and
distinguishing between the recognized walls and floors and the identified objects;
Method, including.
According to any one of claims 11 to 15,
The step of performing the 3D segmentation (S440) is:
Checking whether a 3D model for the selected object is already stored (S1010);
As a result of confirmation, if a 3D model for the selected object is stored, arranging the 3D model so that it overlaps an outline (outlier) of the 2D segmentation on the spatial image by adjusting the direction of the previously stored 3D model. (S1020);
Obtaining 3D position coordinate values for the object from the arranged 3D model (S1030); and
Performing 3D segmentation to segment the object from the spatial image based on the obtained 3D position coordinate values (S1040);
Method, including.
According to any one of claims 11 to 16,
The step of performing the 3D segmentation is:
Checking whether a 3D model for the selected object is already stored (1010);
As a result of confirmation, if the 3D model for the selected object is not stored, obtaining the 3D position coordinate values of the edge, feature point, and pixel of the object recognized from the spatial image ( S1050);
Performing 3D vertex modeling based on at least one of the obtained object's boundary line, feature points, and 3D position coordinate values of pixels (S1060); and
Performing 3D segmentation to divide the object from the spatial image through the 3D vertex modeling (S1070);
Method, including.
According to any one of claims 11 to 17,
When the orientation or field of view of the augmented reality device 100 changes, the spatial image is additionally acquired, and the outline of the object is extracted by performing two-dimensional segmentation on the additionally acquired spatial image. Step (S1420);
Measuring similarity by comparing the extracted outline with a two-dimensional outline of a region into which the object is divided through the three-dimensional segmentation (S1430); and
Comparing the similarity with a preset threshold to determine whether to additionally perform the 3D segmentation (S1440);
A method further comprising:
According to clause 18,
If the similarity is less than the threshold, additionally performing the 3D segmentation and updating the segmentation result through the additionally performed 3D segmentation (S1460);
It further includes,
The method of updating the segmentation result is performed periodically according to a preset time interval.
A computer-readable recording medium on which at least one program for implementing the method according to any one of claims 11 to 19 is recorded.

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