KR20070066382A - 3d image creating method using two cameras and camera terminal that implementing the method - Google Patents

Abstract

A method for generating a 3D image by using two cameras and a camera terminal embodying the same are provided to offer a consistent 2D image for generating the 3D image irrespective of whether an object is fixed and is not fixed by simultaneously photographing the object by using two camera terminals and mutually sharing the photographed 2D image through wireless communication. An input unit(203) receives a 3D image generation command from a user. A wireless communication unit(205) performs local area wireless communication with another terminal. A control unit(207) includes a session module(207-1), a setup initialization module(207-2), a photographing module(207-3), and an image generating module(207-4). If the 3D image generation command is received in the input unit(203), the session module(207-1) forms a session with the another terminal. The setup initialization module(207-2) initializes various setups for generating a 3D image through the formed session, and synchronizes the initialized setups with the another terminal. The photographing module(207-3) photographs an object through a camera and generates the photographed object as the first image. If the second image photographed by a corresponding terminal is transmitted from the another terminal, the image generating module(207-4) substitutes the first image and the second image for algorithm which is for generating the 3D image. A memory unit(209) stores the first image, the second image, and the generated 3D image.

Description

3D image creating method using two cameras and camera terminal that implementing the method}

1 is a schematic diagram schematically showing the concept of a three-dimensional image generation method according to the present invention.

2 is a block diagram showing the internal configuration of a terminal for generating a three-dimensional image according to the present invention.

3 is a flowchart sequentially showing each step and step-by-step data flow of the three-dimensional image generation method according to the present invention.

The present invention relates to a method for generating a 3D image using two terminals equipped with a camera and a terminal for implementing the same, which is implemented through a terminal equipped with a wireless communication unit for short-range data communication with a camera. In detail, when a 3D image generation command is input from the user, a session is formed through wireless communication with the other terminal, and various settings for generating a 3D image such as an image size, a resolution, and a distance to be taken later through the session are performed. Synchronizing the images, capturing the subject as a first image, receiving a second image photographed by the terminal from the other terminal, and substituting the first image and the second image into a predetermined algorithm. To generate a three-dimensional image.

Conventionally, technologies for generating one three-dimensional image by synthesizing two or more two-dimensional images have been proposed several times. Examples thereof include Korean Patent Publication No. 10-2002-0021803 and Korean Patent Publication No. 10-2004. -0004135 may be mentioned.

Here, the former relates to a "method of making a three-dimensional model from one or more two-dimensional images," wherein the three-dimensional coordinates and appearance characteristics of parts not appearing from the two-dimensional images are implemented by synthesizing a two-dimensional image with a database that stores the external characteristics of the object in advance. It is characterized by. However, according to this, a large number of two-dimensional images must be photographed using a single camera, which is based on a fixed subject. When a subject moves every time, a proper three-dimensional image is difficult to generate. Since the photographing point is not fixed as a work performed by a person, it is cumbersome to convert the film consistently to the axis of each 2D image before converting it to a 3D image.

On the other hand, the latter relates to a "portable device having a three-dimensional display function", characterized in that to generate a three-dimensional image in consideration of the parallax information existing between two or more images of the subject. However, even in this case, the problem caused by the assumption that the subject should be fixed and the problem of the conversion process for providing a consistent two-dimensional image also occur in the same way as the former.

On the other hand, it is possible to think of a method of photographing a subject at the same time by mounting two cameras on the same terminal as far as possible, but in general, such a 3D image generating operation is not required to be frequently performed. There is a problem of low contrast efficiency.

The present invention has been proposed to solve the above problems, but simultaneously photographing the subjects with two camera terminals, allowing the two-dimensional images of the subjects to be shared with each other via wireless communication, regardless of whether the subjects are fixed or unfixed. The purpose is to provide a consistent two-dimensional image for the three-dimensional image generation.

Another object of the present invention is to provide a means or a method for measuring the distance between camera terminals so that two two-dimensional images are taken in a consistent image, so that no further procedure for subsequent accumulation conversion is performed.

The present invention for achieving the above object relates to a method for generating a three-dimensional image via a terminal provided with a wireless communication unit for short-range data communication with the camera, when the user inputs the three-dimensional image generation command and the other terminal Forming a session through wireless communication; synchronizing various settings for generating a 3D image through the session; photographing a subject and storing it as a first image; photographing the terminal from the other terminal Receiving a second image and a step of generating a three-dimensional image by substituting the first image and the second image to a predetermined algorithm.

In this case, the synchronizing step may include any one or more of synchronizing the size of the image to be photographed between the two terminals, synchronizing the resolution of the image to be photographed between the both terminals, synchronizing the time of shooting between the two terminals.

Here, the step of measuring the distance to the other terminal before the synchronization step may be further included, in this case, the synchronization step should further include the step of synchronizing the measured distance between both terminals.

In addition, if the wireless communication is made using an infrared communication method (IrDA), the distance measuring step may include emitting infrared light containing specific information from the wireless communication unit, and the emitted infrared light may be reflected by the other terminal. The step of detecting the return, and the step of calculating the distance by comparing the time of emission and the time of detection.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Here, in adding reference numerals to the elements of each drawing, it should be noted that the same elements are denoted by the same reference numerals as much as possible even if they are shown in different drawings.

1 schematically illustrates the concept of a three-dimensional image generation method according to the present invention. That is, the present invention synthesizes two two-dimensional images respectively photographed by two terminals 101 and 102 to generate one three-dimensional image, wherein a predetermined three-dimensional image is generated from the two two-dimensional images. As described above, since the algorithm of Korean Patent Publication No. 10-2002-0021803 and Korean Patent Publication No. 10-2004-0004135, as described above, detailed description thereof will be omitted here.

Meanwhile, in the present embodiment, a mobile phone is assumed as a terminal equipped with a digital camera. However, the present invention is not limited thereto, and a digital camera, a PDA, a PMP, an MP3P, a laptop, etc. having a short range wireless communication function may be used.

2 is a block diagram illustrating an internal configuration of a terminal for generating a 3D image according to the present invention.

One or more digital cameras 201 may be provided in the terminal according to the present invention, but one of them is actually used.

The input unit 203 is implemented as one or more buttons, a touch screen, or a voice recognition module for operating various functions of the terminal. In the present invention, a shortcut key, a specific menu, or a specific voice for receiving a 3D image generation command from the user is particularly preferred. Provide command recognition module.

The wireless communication unit 205 may perform short-range wireless data communication with another terminal, and infrared communication (IrDA; Infrared Data Association), Bluetooth, etc. may be applied to the communication method used herein. It is assumed that infrared communication is used among these.

When the 3D image generation command is input through the input unit 203, the controller 207 includes a session module 207-1 for establishing a session with the other terminal 102 through the wireless communication unit 205, and the formed session. A setting initialization module 207-2 for synchronizing various settings for generating a 3D image with the other terminal 102, and a recording module 207-3 for capturing a subject through the camera and storing the first image as a first image. And an image generation module 207-4 which substitutes the first image and the second image into an algorithm for generating a 3D image when the second image photographed by the terminal is transmitted from the other terminal 102.

In this case, the session should be maintained until the second image is transmitted from the other terminal 102. If the second image is normally transmitted, the session termination control message is transmitted to the other terminal so that the session is automatically terminated. It is desirable to.

In addition, in principle, in the present invention, it is assumed that the 3D image is generated only in the terminal 101 which receives the 3D image generating command, and thus the photographing module 207-3 only captures the first image and has no other function. However, the present invention is not necessarily limited thereto, and after the photographing module 207-3 captures the first image, the first image is automatically transmitted to the other terminal 102 so that the third terminal generates the 3D image. It can also be.

In the above, the setting initialization module 207-2 sets the size of the image to be photographed and transmits it to the other terminal 102 so as to synchronize the other terminal 102 to be set to the same value (not shown in the drawing). ), A second module (not shown in the figure) for setting the resolution of the image to be taken and transmitting it to the other terminal 102, and setting a shooting time point and transmitting the same to the other terminal 102 for synchronization. It may comprise any one or more of the modules (not shown in the figure). Here, the size and resolution of the image does not necessarily need to be synchronized as described above, but a separate module for converting two-dimensional images of different sizes or resolutions to the same condition in each terminal 101 and 102 for generating a three-dimensional image later. There is a burden to be mounted.

On the other hand, the shooting time point above refers to the time from the input of the 3D image generation command from the user to the actual shooting time, but is not necessarily limited thereto. You may. In the latter case, as a user inputs a photographing start command, a message for instructing photographing start is transmitted to the other terminal 102 as a concept of synchronization.

The memory unit 209 stores an operating system program and other application programs for operating the terminal, and various setting data. In the present invention, the first image, the second image, and the generated three-dimensional image are particularly stored. Provide space.

Distance measuring unit 211 is responsible for measuring the distance between the terminal 101 and the other terminal 102 and may be selectively provided in the terminal of the present invention, the distance measuring unit 211 is further included In the case of the initialization module 207-2 further includes a fourth module (not shown in the figure) for transmitting and synchronizing the distance measured by the distance measuring unit 211 to the other terminal (102). .

The distance measuring unit 211 generates an RFID tag (not shown) that generates an electromagnetic field having a differential size according to a set distance, and a predetermined lamp or beep when an RFID signal from the other terminal 102 is received. It may be implemented as an RF reader (not shown) to generate a predetermined control signal to alarm the user or to automatically drive the photographing module 207-3.

In addition, if the wireless communication unit 205 uses infrared communication in the terminal of the present invention, the distance measuring unit 211 is the infrared terminal emitted with the specific information from the wireless communication unit 205 on the other terminal 102 Infrared detection module (not shown in the figure) to detect the reflected back to the distance and may be implemented as a distance calculation module (not shown in the figure) to calculate the distance by comparing the discharge point and the detection point. Here, the specific information carried on the infrared ray is identification information for indicating that the infrared ray is for distance measurement, and is not necessarily limited to the specific data, but may correspond to a specific wavelength of the infrared ray.

Now, a method of generating a cold image using two such terminals will be described in detail with reference to a specific example. For reference, FIG. 3 is a flowchart sequentially illustrating each step and step-by-step data flow of the 3D image generating method according to the present invention.

When a 3D image generation command is input from the user through a shortcut key or a specific menu on the first terminal 101 (S301a), the second terminal 102 transmits a Connect_Req message to request a communication connection and the second terminal 102. When the message is normally received, the first terminal 101 transmits a Connect_Ack message to inform that the physical communication connection is made. Subsequently, the first terminal requests to open a session by sending a Session_Req message to the second terminal 102, and when the second terminal 102 receives the message normally, transmits a Session_Ack message to the first terminal 101. Informs that a logical communication connection has been made (S303a, S303b).

Now, the first terminal receives the user's size, resolution, and the shooting time from the user to be input or set to a preset value (S305a), and informs the second terminal 102 of the initialized value to be set to the same value. In order to transmit the setting_Sync_Req message and Setting Data (value initialized above) to the second terminal (102). If the second terminal 102 receives the message normally, the second terminal 102 transmits a Setting_Sync_Ack message to the first terminal 101 to inform that synchronization of the initialization value is normally performed (S307a and S307b).

When a predetermined time is set as the photographing time point, when the corresponding photographing time point is reached or when the photographing time point is input of the user's photographing command, when the user's photographing command is input, the subject is photographed and the first image is stored in the memory (S309a). In this case, if the shooting time is when the user inputs the shooting command as in the latter case, after the step S309a, the Take_Req message is transmitted to the second terminal to transmit the user's shooting command, and optionally, the 3D message is generated in the second terminal. The first image is transmitted to the second terminal together with the Take_Req message so that this can be performed (S309a). The second terminal generates a second image by taking a picture when the synchronized shooting time point is reached in step S307b or when the Take_Req message arrives, and transmits it to the first terminal or sends it to the first terminal together with the Take_Ack message. It transmits (S309b).

Finally, the 3D image is generated by substituting the first image and the second image received from the second terminal by a predetermined algorithm in operation S309 (S311a). Similarly, the second terminal generates a three-dimensional image by substituting the second image and the first image received from the first terminal by a predetermined algorithm in operation S309 (S311b), and the operation S311b may be selectively performed. Yes is as described earlier.

As described above, the present invention has been described using embodiments, but these embodiments are merely exemplary, and those skilled in the art may make various modifications and changes without departing from the spirit of the present invention. I can understand that.

According to the present invention having the configuration as described above it is possible to use a conventional terminal or a mobile communication terminal with one camera as it is possible to implement a three-dimensional image generation function at a low cost, for shooting between terminals through short-range wireless communication Since various settings are synchronized and photographed simultaneously, a three-dimensional image can be easily generated even with a dynamic subject. In addition, by providing a means for measuring the distance between the terminal to maintain the consistency between the two-dimensional image in the future to facilitate the generation of three-dimensional image, it is not necessary to perform the accumulation conversion according to the distance can increase the three-dimensional image generation efficiency .

Claims (8)

In the method for generating a three-dimensional image through a digital camera and two terminals equipped with a wireless communication unit for short-range data communication, When the 3D image generation command is input from the user, establishing a session through wireless communication with the other terminal; Synchronizing various settings for generating a 3D image through the session; Photographing a subject and storing it as a first image; Receiving a second image photographed by the terminal from the other terminal; And Generating a three-dimensional image by substituting the first image and the second image into a predetermined algorithm; Three-dimensional image generation method using two cameras consisting of. The method of claim 1, wherein the synchronizing step Synchronizing the size of the image to be taken between the two terminals, Synchronizing the resolution of the image to be taken between the two terminals, and Synchronizing shooting time between both terminals 3D image generating method using two cameras, characterized in that it comprises any one or more of. The method of claim 2, Before the synchronization step further includes the step of measuring the distance to the other terminal, The synchronizing step further includes the step of synchronizing the measured distance between the two terminals. The method of claim 3, wherein The wireless communication is made in an infrared communication method (IrDA; Infrared Data Association), The distance measuring step comprises the steps of emitting infrared rays through the wireless communication unit, detecting the emitted infrared rays reflected back to the other terminal, and calculating the distance by comparing the emission time and the detection time Three-dimensional image generation method using two cameras characterized by. In a terminal having a digital camera, An input unit for receiving a 3D image generating command from a user; A wireless communication unit for performing short-range wireless data communication with the other terminal; When a 3D image generation command is input to the input unit, a session module for establishing a session with the other terminal through the wireless communication unit, initializes various settings for generating a 3D image through the formed session, and synchronizes it with the other terminal. A setup initialization module, a photographing module for photographing a subject through the camera and storing the subject as a first image, and generating a 3D image of the first image and the second image when a second image photographed by the terminal is transmitted from the other terminal. A control unit having an image generation module that substitutes for an algorithm for; And A memory unit for storing the first image, the second image, and the generated three-dimensional image; Camera terminal for generating a three-dimensional image comprising a. The method of claim 5, wherein the setting initialization module A first module for setting a size of an image to be taken and transmitting it to the other terminal for synchronization; A second module for setting a resolution of an image to be taken and transmitting it to the other terminal for synchronization; and Third module for setting the shooting time point and sending it to the other terminal to synchronize Camera terminal for generating a three-dimensional image, characterized in that it comprises any one or more of. The method of claim 6, The terminal further includes a distance measuring unit for measuring the distance away from the other terminal, The setup initialization module further comprises a fourth module for synchronizing by transmitting the measured distance to the other terminal. The method of claim 7, wherein The wireless communication unit uses an infrared communication method (IrDA), The distance measuring unit comprises an infrared sensing module for detecting the infrared rays emitted from the wireless communication unit reflected back to the other terminal and a distance calculating module for calculating the distance by comparing the emission time and the detection time point. Camera terminal for generating a three-dimensional image.

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