JP2012059008A - Program, information storage medium and image generation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a program capable of improving the degree of freedom in stereoscopic expression, and to provide an information storage medium and an image generation system.SOLUTION: An image generation system includes: an object space setting unit for setting an object space where plural objects are placed; a drawing area setting unit for setting a main drawing area ARM and a periphery drawing area ARP set around the main drawing area ARM; and an image generation unit for generating an image for stereoscopic vision by performing drawing processing so as to set the main drawing area ARM as a drawing area for a first object OB1 among the plural objects and by performing drawing processing so as to set the main drawing area ARM and the whole periphery drawing area ARP as a drawing area for a second object OB2 among the plural objects.

Description

  The present invention relates to a program, an information storage medium, an image generation system, and the like.

  2. Description of the Related Art In recent years, stereoscopic image generation systems have been spotlighted as systems for generating images that are more realistic in the fields of movies and games. For example, in a binocular stereoscopic image generation system which is one of the stereoscopic image generation systems, an image for the left eye and an image for the right eye are generated. Then, for example, the player wears stereoscopic glasses, the left eye sees only the left eye image, and the right eye sees only the right eye image, thereby realizing stereoscopic vision. As a conventional technique of an image generation system that realizes such a stereoscopic view, there is a technique disclosed in Patent Document 1, for example. Further, as a stereoscopic viewing method, there is a naked eye type in addition to the glasses type. For example, a parallax barrier creates a state of “visible to the left eye but not to the right eye” or “visible to the right eye but not to the left eye” for each pixel. Visual system can be realized. Also, by utilizing the refraction of light by an optical element such as a lenticular, the direction of the light is controlled for each pixel, and a state similar to the above can be created to realize a stereoscopic vision system with naked eyes.

  When such a stereoscopic image is generated by CG (Computer Graphics), the left-eye view volume (left-eye frustum) corresponding to the left-eye virtual camera is set as the field of view, and drawing processing is performed. To generate an image for the left eye. In addition, the right eye view volume (right eye frustum) corresponding to the right eye virtual camera is set as the field of view, rendering processing is performed, and a right eye image is generated.

  However, the display size of the display unit on which the stereoscopic image such as the left-eye image and the right-eye image is displayed is limited. For this reason, there has been a problem that when a stereoscopic effect that causes an object such as a character to jump out of the screen is performed, the degree and direction of the jumping out of the object from the screen are limited.

JP 2004-126902 A

  According to some aspects of the present invention, it is possible to provide a program, an information storage medium, an image generation system, and the like that can improve the degree of freedom of stereoscopic expression.

  According to an aspect of the present invention, an object space setting unit that performs an object space setting process in which a plurality of objects are arranged, a main drawing area, and a surrounding drawing area setting process that is set around the main drawing area are performed. For the first object of the plurality of objects, the drawing region setting unit performs a drawing process in which the main drawing region is set as a drawing region, and for the second object of the plurality of objects, The present invention relates to an image generation system including an image generation unit configured to generate a stereoscopic image by performing a drawing process in which the main drawing area and the entire surrounding drawing area are set as a drawing area. The present invention also relates to a program that causes a computer to function as each of the above-described units, or a computer-readable information storage medium that stores the program.

  According to one aspect of the present invention, a main drawing area and a surrounding drawing area around the main drawing area are set. An image of the main drawing area is generated by drawing the first object while setting the main drawing area as the drawing area. On the other hand, a stereoscopic image is generated by drawing the second object by setting the main drawing area and the entire surrounding drawing area as the drawing area. In this way, it is possible to draw the second object to be stereoscopically viewed, for example, outside the main drawing area, and the degree of freedom of stereoscopic expression can be improved.

  In the aspect of the invention, the drawing area setting unit may control a setting state that is at least one of a size, a shape, and a position of the main drawing area based on given information.

  In this way, the size, shape and position of the main drawing area can be changed in real time, and various stereoscopic expressions can be realized.

  In the aspect of the invention, the drawing area setting unit may control the setting state of the main drawing area based on information on the second object.

  In this way, it is possible to generate a stereoscopic image by changing the setting state such as the size, shape, and position of the main drawing area using the information of the second object.

  In the aspect of the invention, the drawing area setting unit may perform the main drawing based on at least one of position information, direction information, movement information, number information, and occupied area information on the screen of the second object. The setting state of the area may be controlled.

  In this way, control of the setting state of the main drawing area reflecting the position information, direction information, movement information, number information, and occupied area information of the second object can be realized.

  In the aspect of the invention, the drawing area setting unit may control the setting state of the main drawing area based on user input information.

  In this way, it is possible to control the setting state of the main drawing area in accordance with user input information.

  In the aspect of the invention, the drawing area setting unit may control the setting state of the main drawing area based on stereoscopic intensity setting information input by the user.

  In this way, the setting state of the main drawing area can be changed in conjunction with the stereoscopic intensity setting information input by the user.

  In the aspect of the invention, the drawing area setting unit may control the setting state of the main drawing area based on time information.

  In this way, it is possible to generate a stereoscopic image by changing the setting state of the main drawing area according to the passage of time or the like.

  In the aspect of the invention, the drawing area setting unit may set a setting state of at least one of the main drawing area and the surrounding drawing area at the time of drawing at a first viewpoint among a plurality of viewpoints in a stereoscopic view and a second state. The drawing may be different from each other at the time of drawing.

  In this way, the degree of freedom and diversity in stereoscopic expression can be further improved. The first and second viewpoints may be a left-eye viewpoint and a right-eye viewpoint in binocular stereoscopic vision, or may be a plurality of viewpoints in multi-eye stereoscopic vision.

  In the aspect of the invention, the drawing area setting unit may set a position at which at least one of the main drawing area and the surrounding drawing area is set at the time of drawing at the first viewpoint and the second viewpoint. It may be different from each other at the time of drawing.

  In this way, it is possible to perform video expression and the like as if the display screen has moved to a position different from the actual position, and the degree of freedom and diversity in stereoscopic expression can be improved.

  In the aspect of the invention, the image generation unit includes an image processing unit, and the image processing unit performs image processing on the image of the surrounding drawing area, and converts the second object into the surrounding drawing area. When rendering, the image processing may not be performed, or image processing in a mode different from the image processing may be performed.

  In this way, while generating an image subjected to image processing on the surrounding drawing area, the second object is not subjected to the image processing or is subjected to image processing of a different aspect. A stereoscopic image can be generated.

  In the aspect of the invention, the image processing unit may perform gradation processing on the image of the surrounding drawing area so as to make the pixel color closer to the target color toward the outside of the surrounding drawing area. When the object is drawn in the surrounding drawing area, the gradation process may not be performed or the gradation process with a small gradation degree may be performed.

  In this way, gradation processing can be performed on the surrounding drawing area, and the second object is not subjected to gradation processing, or gradation processing with a low gradation degree is performed. A stereoscopic image can be generated.

  In one aspect of the present invention, the image processing unit performs a blurring process on the image of the surrounding drawing area, and performs the blurring process when drawing the second object in the surrounding drawing area. You may perform the blurring process which is not performed or the degree of blurring is small.

  In this way, it is possible to perform the blurring process on the surrounding drawing area, and the second object is not subjected to the blurring process or is subjected to a blurring process with a low degree of blurring. A stereoscopic image can be generated.

  In the aspect of the invention, the image generation unit may generate a stereoscopic image in which a display frame image is drawn in the surrounding drawing area.

  In this way, it is possible to generate a stereoscopic image by making the surrounding drawing area look like a real screen of the display unit.

  In the aspect of the invention, the image generation unit may generate a stereoscopic image in which at least a part of the second object is drawn in the surrounding drawing area.

  In this way, by generating a stereoscopic image in which at least a part of the second object is drawn and drawn, it is possible to generate an image having a high stereoscopic effect, for example.

  In the aspect of the invention, the image generation unit may generate a stereoscopic image in which at least a part of the information display object that is the second object protrudes in the surrounding drawing area. .

  In this way, the information display object can be displayed with an unprecedented stereoscopic expression.

  In the aspect of the invention, the image generation unit may perform a drawing process in which the main drawing area is set as a drawing area for the first object, and the main drawing area for the second object. And a left-eye image generation unit that generates a left-eye image by performing a drawing process in which the entire surrounding drawing area is set as a drawing area, and for the first object, the main drawing area is the drawing area. A right eye that generates a right-eye image by performing a drawing process in which the main drawing area and the entire surrounding drawing area are set as a drawing area for the second object. And an image generation unit.

  In this way, the technique of the present invention can be applied to stereoscopic vision such as a two-eye separation spectacle system to improve the degree of freedom of stereoscopic expression.

1 is a configuration example of an image generation system according to the present embodiment. Explanatory drawing of the setting method of the view volume for left eyes, and the view volume for right eyes. Explanatory drawing of the drawing position of the object in stereoscopic vision. Explanatory drawing about the problem of a conventional method. Explanatory drawing of the method of this embodiment. The example of the image produced | generated by this embodiment. The example of the image produced | generated by this embodiment. The example of the image produced | generated by this embodiment. Explanatory drawing of the advantage of the method of this embodiment. FIGS. 10A and 10B are explanatory diagrams of a method for separately setting the main drawing area for the left eye and the main drawing area for the right eye. FIG. 11A and FIG. 11B are explanatory diagrams of a method for controlling the setting state of the main drawing area based on the position information of the pop-out target object. FIGS. 12A and 12B are explanatory diagrams of a method for controlling the setting state of the main drawing area based on the number information of the pop-out target objects. 13A and 13B are explanatory diagrams of a method for controlling the setting state of the main drawing area based on user input information. Explanatory drawing of the method of controlling the setting state of a main drawing area | region based on time information. Explanatory drawing of the image processing method of this embodiment. Explanatory drawing of the image processing method of this embodiment. FIG. 17A and FIG. 17B are explanatory diagrams of a method of a modification of the present embodiment. FIG. 18A and FIG. 18B are explanatory diagrams of a method for separately setting a left-eye surrounding drawing area and a right-eye surrounding drawing area. FIG. 19A and FIG. 19B are explanatory diagrams of a method of a modification of the present embodiment. FIG. 20A and FIG. 20B are explanatory diagrams of a method of a modification of the present embodiment. Explanatory drawing of the method of the modification of this embodiment. The flowchart explaining the detailed process of this embodiment. The flowchart explaining the detailed process of this embodiment. The flowchart explaining the detailed process of this embodiment. The flowchart explaining the detailed process of this embodiment. 26A and 26B are explanatory diagrams of a stereoscopic image generation method to which the method of this embodiment is applied.

  Hereinafter, this embodiment will be described. In addition, this embodiment demonstrated below does not unduly limit the content of this invention described in the claim. In addition, all the configurations described in the present embodiment are not necessarily essential configuration requirements of the present invention.

1. Configuration FIG. 1 shows an example of a block diagram of an image generation system (game system) of the present embodiment. Note that the configuration of the image generation system of the present embodiment is not limited to that shown in FIG. 1, and various modifications may be made such as omitting some of the components (each unit) or adding other components. .

  The operation unit 160 is for a player to input operation data, and functions thereof are direction instruction keys, operation buttons, analog sticks, levers, various sensors (such as an angular velocity sensor and an acceleration sensor), a microphone, or a touch panel type. This can be realized with a display.

  The storage unit 170 serves as a work area for the processing unit 100, the communication unit 196, and the like, and its function can be realized by a RAM (DRAM, VRAM) or the like. Then, the game program and game data necessary for executing the game program are held in the storage unit 170.

  The information storage medium 180 (a computer-readable medium) stores programs, data, and the like, and functions as an optical disk (DVD, CD, etc.), HDD (hard disk drive), memory (ROM, etc.), etc. Can be realized. The processing unit 100 performs various processes of the present embodiment based on a program (data) stored in the information storage medium 180. That is, in the information storage medium 180, a program for causing a computer (an apparatus including an operation unit, a processing unit, a storage unit, and an output unit) to function as each unit of the present embodiment (a program for causing the computer to execute processing of each unit). Is memorized.

  The display unit 190 outputs an image generated according to the present embodiment, and its function can be realized by an LCD, an organic EL display, a CRT, a touch panel display, an HMD (head mounted display), or the like. The sound output unit 192 outputs the sound generated by the present embodiment, and its function can be realized by a speaker, headphones, or the like.

  The auxiliary storage device 194 (auxiliary memory, secondary memory) is a storage device used to supplement the capacity of the storage unit 170, and can be realized by a memory card such as an SD memory card or a multimedia card.

  The communication unit 196 communicates with the outside (for example, another image generation system, a server, or a host device) via a wired or wireless network, and functions as a communication ASIC, a communication processor, or the like. It can be realized by hardware and communication firmware.

  Note that a program (data) for causing a computer to function as each unit of the present embodiment is obtained from an information storage medium of a server (host device) via an information storage medium 180 (or storage unit 170, auxiliary storage) via a network and communication unit 196. May be distributed to the device 194). Use of an information storage medium by such a server (host device) can also be included in the scope of the present invention.

  The processing unit 100 (processor) performs game processing, image generation processing, sound generation processing, and the like based on operation data from the operation unit 160, a program, and the like. The processing unit 100 performs various processes using the storage unit 170 as a work area. The functions of the processing unit 100 can be realized by hardware such as various processors (CPU, GPU, etc.), ASIC (gate array, etc.), and programs.

  The processing unit 100 includes a game calculation unit 102, an object space setting unit 104, a moving body calculation unit 106, a virtual camera control unit 108, a drawing area setting unit 110, an image generation unit 120, and a sound generation unit 130.

  The game calculation unit 102 performs game calculation processing. Here, as a game calculation, a process for starting a game when a game start condition is satisfied, a process for advancing the game, a process for calculating a game result, or a process for ending a game when a game end condition is satisfied and so on.

  The object space setting unit 104 performs an object space setting process in which a plurality of objects are arranged. For example, various objects (polygon, free-form surface or subdivision surface) representing display objects such as characters (people, animals, robots, cars, ships, airplanes, etc.), maps (terrain), buildings, courses (roads), trees, walls, etc. The object is configured to place and set in the object space. In other words, the position and rotation angle of the object in the world coordinate system (synonymous with direction and direction) are determined, and the rotation angle (rotation angle around the X, Y, and Z axes) is determined at that position (X, Y, Z). Arrange objects. Specifically, the object data storage unit 172 of the storage unit 170 stores object data such as the position, rotation angle, moving speed, moving direction, etc. of the object (part object) in association with the object number. . The object space setting unit 104 performs a process of updating the object data for each frame, for example.

  The moving object calculation unit 106 performs an operation for moving a moving object such as a character. Also, a calculation for operating the moving object (moving object) is performed. That is, based on operation data input by the player through the operation unit 160, a program (movement / motion algorithm), various data (motion data), etc., a moving body (object, model object) is moved in the object space, Performs processing to move the moving body (motion, animation). Specifically, a simulation process for sequentially obtaining movement information (position, rotation angle, speed, or acceleration) and motion information (part object position or rotation angle) of a moving body for each frame (1/60 second). I do. A frame is a unit of time for performing a moving / movement process (simulation process) and an image generation process of a moving object.

  The virtual camera control unit 108 performs control processing of a virtual camera (viewpoint, reference virtual camera) for generating an image that can be seen from a given (arbitrary) viewpoint in the object space. Specifically, processing for controlling the position (X, Y, Z) or rotation angle (rotation angle about the X, Y, Z axis) of the virtual camera (processing for controlling the viewpoint position, the line-of-sight direction or the angle of view) I do.

  For example, when a character is photographed from behind using a virtual camera, the position (viewpoint position) and direction (gaze direction) of the virtual camera are controlled so that the virtual camera follows changes in the position or direction of the character. In this case, the virtual camera can be controlled based on information such as the position, direction, or speed of the character obtained by the moving body computing unit 106. Alternatively, the virtual camera may be controlled to rotate at a predetermined rotation angle or to move along a predetermined movement path. In this case, the virtual camera is controlled based on virtual camera data for specifying the position (movement path) or direction of the virtual camera.

  The drawing area setting unit 110 performs various setting processes for the drawing area. Specifically, processing for securing a drawing area in the drawing buffer 178 is performed.

  The image generation unit 120 performs drawing processing based on the results of various processing (game processing and simulation processing) performed by the processing unit 100, thereby generating an image and outputting the image to the display unit 190. Specifically, geometric processing such as coordinate transformation (world coordinate transformation, camera coordinate transformation), clipping processing, perspective transformation, or light source processing is performed. Based on the processing result, drawing data (the position of the vertex of the primitive surface) Coordinates, texture coordinates, color data, normal vector, α value, etc.) are created. Based on the drawing data (primitive surface data), the object (one or a plurality of primitive surfaces) after perspective transformation (after geometry processing) is converted into image information in units of pixels such as a drawing buffer 178 (frame buffer, work buffer, etc.). Draw in a buffer that can be stored. Thereby, an image that can be seen from the virtual camera (given viewpoint) in the object space is generated. Note that the rendering process can be realized by a vertex shader process, a pixel shader process, or the like.

  The sound generation unit 130 performs sound processing based on the results of various processes performed by the processing unit 100, generates game sounds such as BGM, sound effects, or sounds, and outputs the game sounds to the sound output unit 192.

  In this embodiment, the object space setting unit 104 performs an object space setting process (arrangement process or the like) in which a plurality of objects are arranged. In addition, the drawing area setting unit 110 performs processing for setting a main drawing area and a surrounding drawing area set around the main drawing area. For example, the main drawing area (center drawing area) and the surrounding drawing area (peripheral drawing area) are designated (address designation) for the drawing buffer 178, and the main drawing area and the surrounding drawing area are secured in the drawing buffer 178. I do.

  Then, the image generation unit 120 performs a drawing process in which the main drawing area is set as the drawing area for the first object (for example, the background object) among the plurality of objects. On the other hand, for the second object (for example, the pop-out target object) of the plurality of objects, a drawing process in which the main drawing area and the entire surrounding drawing area are set as the drawing area is performed, and the stereoscopic image (left eye) Image, right eye image, etc.).

  As described above, in the present embodiment, the first object is drawn with the main drawing area set as the drawing area, while the second object is drawn not only in the main drawing area but also in the surrounding drawing area. A region is set and rendered, and a stereoscopic image is generated. Accordingly, the second object can be drawn by protruding into the surrounding drawing area. For example, a stereoscopic expression in which the second object appears to protrude greatly from the screen to the near side, or the second object protrudes in the horizontal direction of the screen. Stereoscopic viewing and the like can be realized, and the degree of freedom of stereoscopic expression can be improved.

  The main drawing area is a drawing area corresponding to the center of the screen of the display unit 190, for example, and is a main drawing area for object drawing. The surrounding drawing area is a drawing area provided around (periphery) the main drawing area. For example, the main drawing area is an area surrounded by the surrounding drawing area. These main drawing area and surrounding drawing area are areas secured on the drawing buffer 178, for example, and the setting state (setting information) such as the size, shape, or position of the area can be variably set.

  The first object is an object such as a background, for example, and the first object is drawn in the main drawing area. On the other hand, the second object is, for example, a pop-out target object that is expected to pop out from the screen, and is drawn not only in the main drawing area but also in the surrounding drawing area. Further, the stereoscopic image is a left-eye image and a right-eye image, for example, using a two-eye separation spectacle system. However, the stereoscopic image is not limited to the left-eye image and the right-eye image of the two-eye separation spectacle method, and may be a naked-eye type stereoscopic image. The naked-eye method includes a multi-eye method, an aerial image method, and the like in addition to the naked-eye binocular method. As the aerial image method, for example, a “fractional view method” (Japanese Patent Laid-Open No. 2006-048659) has been proposed.

  In the present embodiment, the drawing area setting unit 110 controls the setting state (setting information, setting status) of the main drawing area based on given information (drawing area setting information). Here, the setting state of the main drawing area is at least one of the size, shape and position of the main drawing area (surrounding drawing area). The size of the main drawing area is the area of the main drawing area, the shape of the main drawing area is the outer shape of the main drawing area, and the position of the main drawing area is the setting position of the main drawing area. Note that controlling the setting state of the main drawing area is equivalent to controlling the setting state (size, shape, or position) of the surrounding drawing area.

  For example, the drawing area setting unit 110 controls the setting state (size, position, or shape) of the main drawing area based on the information of the second object. Specifically, the setting state of the main drawing area is controlled based on at least one of position information, direction information, movement information, number information, and occupied area information on the screen of the second object. Here, the position information of the second object is, for example, X-coordinate, Y-coordinate, or Z-coordinate information of the second object, and the direction information is the traveling direction information or the line-of-sight direction information of the second object. The movement information is speed information, acceleration information, angular velocity information, angular acceleration information, or the like. The number information is information representing the number (number of appearances) of the second object, and the occupied area information is, for example, an image of the second object (one or a plurality of second objects) on the screen of the display unit 190. Information indicating the occupied area.

  The drawing area setting unit 110 may control the setting state of the main drawing area based on user input information. This input information is information input by a user (a player in a narrow sense) via the operation unit 160, for example. Specifically, the drawing area setting unit 110 controls the setting state of the main drawing area based on the stereoscopic intensity setting information input by the user. Alternatively, the drawing area setting unit 110 may control the setting state of the main drawing area based on the time information. Here, the time information is information such as elapsed time information or play time information of a game or the like, and is information representing time elapsed, date and time, play time, or the like.

  In addition, the drawing area setting unit 110 changes the setting state of at least one of the main drawing area and the surrounding drawing area at the time of drawing at the first viewpoint among the plurality of viewpoints in the stereoscopic view and the second viewpoint (the first viewpoint and the first viewpoint). May be different at the time of drawing at different viewpoints). For example, when drawing from the first viewpoint and drawing from the second viewpoint, the main drawing area setting state is different, the surrounding drawing area setting state is different, the main drawing area and the surrounding drawing area Both of the setting states may be different. For example, the first setting state is set when drawing at the first viewpoint, and the second setting state is set when drawing at the second viewpoint. Here, the setting state is the setting position, size or shape of the main drawing area and the surrounding drawing area. In addition, the first and second viewpoints may be binocular viewpoints or multi-lens viewpoints (three or more eyes).

  More specifically, the drawing area setting unit 110 sets the position at which at least one of the main drawing area and the surrounding drawing area is set between the drawing at the first viewpoint and the drawing at the second viewpoint. It may be different. For example, the first position is set at the time of drawing at the first viewpoint, and the second position is set at the time of drawing at the second viewpoint.

  The image generation unit 120 includes an image processing unit 122. The image processing unit 122 performs image processing on the image in the surrounding drawing area. On the other hand, the image processing unit 122 does not perform image processing or performs image processing in a mode different from image processing when drawing the second object in the surrounding drawing area. Here, the different types of image processing mean processes having different degrees (degrees) and types of image processing effects.

  Specifically, the image processing unit 122 performs gradation processing on the image of the surrounding drawing area so that the pixel color approaches the target color as it goes outside the surrounding drawing area. On the other hand, when drawing the second object in the surrounding drawing area, gradation processing is not performed or gradation processing with a small gradation degree (gradation processing in a different form in a broad sense) is performed. Alternatively, the image processing unit 122 performs blurring processing (blur processing) on the image in the surrounding drawing area. On the other hand, when drawing the second object in the surrounding drawing area, the blurring process is not performed or the blurring process with a low degree of blurring (blurring process in a different manner in a broad sense) is performed.

  The image generation unit 120 may generate a stereoscopic image in which a display frame image is drawn in the surrounding drawing area. Here, the display frame image is an image displayed as a display frame of the screen around the screen when the main drawing area is a pseudo screen.

  The second object is, for example, an object arranged closer to the front side (front side in the depth direction) than the first object when viewed from the virtual camera (the left eye virtual camera, the right eye virtual camera, or the reference virtual camera). It is. Then, the image generation unit 120 generates a stereoscopic image in which at least a part of the second object protrudes from the surrounding drawing area. For example, the image generation unit 120 generates a stereoscopic image in which at least a part of the information display object, which is the second object, is drawn in the surrounding drawing area. Here, the information display object is an object for transmitting various types of information to the user (player). Examples of the transmitted information include user character information (status information, etc.), enemy information, game situation information, or a map. Information.

  In the case of the two-eye separation spectacle method, the image generation unit 120 includes a left-eye image generation unit (first viewpoint image generation unit in a broad sense) 124 and a right-eye image generation unit (second viewpoint image in a broad sense). Generating section) 126. In this case, the left-eye image generation unit 124 performs the drawing process in which the main drawing area is set as the drawing area for the first object, and the main drawing area and the surrounding drawing area for the second object. The left eye image is generated by performing a drawing process in which the whole is set in the drawing area. That is, a left-eye image (first viewpoint image in a broad sense) that is an image at the viewpoint (first viewpoint in a broad sense) of the left-eye virtual camera is generated. The right-eye image generation unit (second viewpoint image generation unit in a broad sense) 126 also performs a drawing process in which the main drawing area is set as the drawing area for the first object, and for the second object, The right eye image is generated by performing a drawing process in which the main drawing area and the entire surrounding drawing area are set as the drawing area. That is, an image for the right eye (second viewpoint image in a broad sense) that is an image at the viewpoint (second viewpoint in a broad sense) of the virtual camera for the right eye is generated.

  Note that the virtual camera control unit 108 controls a reference virtual camera serving as a reference for setting, for example, left-eye and right-eye virtual cameras. Then, based on the obtained position information and direction information of the reference virtual camera and information on the set inter-camera distance, position information (viewpoint position) and direction information (line-of-sight direction) of the left-eye and right-eye virtual cameras ) Note that the virtual camera control unit 108 may directly control the left-eye and right-eye virtual cameras.

  As a stereoscopic method, various methods such as a two-eye separation spectacle method, a parallax barrier, a lenticular, and a naked eye method using an optical element capable of controlling the direction of light can be assumed. Examples of the binocular separation glasses method include a polarization glasses method, a time separation method, and a color separation method. In the polarized glasses method, for example, the left-eye image and the right-eye image are alternately displayed on the odd-numbered and even-numbered lines of the display unit 190, and this is displayed on the polarized glasses (for example, the horizontal polarization filter for the left eye and the vertical for the right eye). Stereoscopic viewing is realized by viewing with a pair of spectacles with a directional polarizing filter. Alternatively, the stereoscopic image may be realized by projecting the image for the left eye and the image for the right eye with a projector having a special polarization filter and viewing the projection image with polarized glasses. In the continuous separation method (page-flip method), the left-eye image and the right-eye image are alternately displayed on the display unit 190 every predetermined period (for example, every 1/120 second or 1/60 second). In conjunction with the switching of the display, the left and right liquid crystal shutters of the glasses with the liquid crystal shutter are alternately opened and closed to realize stereoscopic viewing. In the color separation method, for example, an anaglyph image is generated and viewed with red-blue glasses or the like to realize stereoscopic viewing.

  In addition, the function of generating a stereoscopic image from the left-eye image and the right-eye image may be provided in the image generation unit 120 or may be provided in the display unit 190 (such as a television). For example, the image generation unit 120 outputs a side-by-side image signal. Then, the display unit 190 displays a field sequential image in which left-eye images and right-eye images are alternately assigned to odd lines and even lines based on the side-by-side image signal. Alternatively, a frame sequential image in which the left-eye image and the right-eye image are alternately switched every predetermined period is displayed. Alternatively, the image generation unit 120 may generate a field sequential method or frame sequential method image and output the generated image to the display unit 190.

2. Next, the method of this embodiment will be described in detail.

2.1 Setting of main drawing area and surrounding drawing area First, setting of a view volume in stereoscopic view will be described. As shown in FIG. 2, in order to generate a stereoscopic image, a left-eye virtual camera VCL and a right-eye virtual camera VCR that are set at positions separated by a given inter-camera distance are used.

  Then, a left-eye view volume VVL (left-eye view frustum) is set corresponding to the left-eye virtual camera VCL, and a right-eye view volume VVR (right-eye view) corresponding to the right-eye virtual camera VCR. Frustum) is set. Specifically, the positions and directions of the left-eye and right-eye view volumes VVL and VVR are set based on the positions and directions of the left-eye and right-eye virtual cameras VCL and VCR.

  In this case, the image for the left eye, which is an image that can be seen from the left-eye virtual camera VCL, is generated by perspectively projecting and drawing an object existing in the left-eye view volume VVL on the screen SC. Similarly, an image for the right eye, which is an image that can be viewed from the virtual camera for right eye VCR, is generated by perspectively projecting an object existing in the right-eye view volume VVR onto the screen SC and drawing it.

  In this case, since objects at positions that are not perspective-projected on the screen SC are not drawn, if perspective projection conversion processing is performed on these objects, processing is wasted. Therefore, as shown in FIG. 2, the left-eye and right-eye view volumes VVL are provided so that objects at positions that are not perspective-projected on the screen SC in the left-eye and right-eye virtual cameras do not enter the view volume. , VVR is set. In FIG. 2, CNL and CFL are the front clipping plane and the rear clipping plane of the left eye view volume VVL, respectively. CNR and CFR are the front clipping plane and the rear clipping plane of the right eye view volume VVR, respectively. It is.

  As described above, in the method of generating the left-eye image and the right-eye image to realize stereoscopic viewing, the sense of depth is recognized by the parallax between the left-eye image and the right-eye image.

  For example, in FIG. 3, the drawing position AL in the left-eye image and the drawing position AR in the right-eye image for the object located at the point A on the screen SC are the same position.

  On the other hand, the object located at the point B is drawn at the position of the point BL in the image for the left eye, and is drawn at the position of the point BR in the image for the right eye. Then, by providing a shift in the drawing positions of the left-eye image and the right-eye image in this way, it is possible to realize a stereoscopic expression in which the object located at the point B appears to jump out of the screen toward the user.

  However, the display size of the display unit 190 on which stereoscopic images such as the left-eye image and the right-eye image are displayed is finite. For this reason, the degree of projecting and the projecting direction of the object from the screen are limited in the stereoscopic expression in which the object is ejected from the screen.

  For example, OB2R in FIG. 4 is an object image in the image for the right eye of the object OB2, and OB2L is an object image in the image for the left eye of the object OB2. In the positional relationship in which the object image OB2R is shifted to the left side with respect to OB2L, the greater the displacement of the drawing position, the greater the degree of projecting of the object in stereoscopic view as described with reference to FIG.

  However, as shown in FIG. 4, the display size of the display unit 190 is finite, and with the conventional method, it is difficult to make a stereoscopic expression such that an object such as a character appears beyond the screen of the display unit 190. For example, if an object such as a character is positioned around the left and right edges of the screen, attempting to pop out the object will quickly exceed the screen range, resulting in a small amount of popping out. It was.

  Therefore, in the present embodiment, a blank area is provided around the drawing area, and when drawing an object to be popped out, the object is drawn in an area including the blank area. In this way, it is possible to induce a psychological illusion and make it appear as if the problem of the conventional method is solved. In other words, when drawing a background image or the like by setting a drawing area smaller than the actual display size and drawing an object to be popped out, the object is drawn in the area consisting of the drawing area and the margin area. To do.

  For example, in FIG. 5, the main drawing area ARM and the surrounding drawing area ARP serving as the margin area are set. The main drawing area ARM and the surrounding drawing area ARP are secured in the drawing buffer 178, for example. Note that the shape and arrangement of the main drawing area ARM and the surrounding drawing area ARP are not limited to those shown in FIG. 5, and various modifications can be made. For example, the surrounding drawing area ARP serving as the margin area may be provided only on the left and right of the main drawing area ARM, or the surrounding drawing area ARP serving as the margin area may be provided only above and below the main drawing area ARM. Of course, the place to be provided may be only left, only right, only above, only below, or a combination thereof. The main drawing area ARM is not limited to a rectangular area, and various shapes can be assumed. Furthermore, the setting states of the main drawing area ARM and the surrounding drawing area ARP may be different for the left eye (first viewpoint) and the right eye (second viewpoint).

  In the present embodiment, as shown in FIG. 5, for the first object OB1 such as the background, for example, only the main drawing area ARM is set as the drawing area and is drawn. On the other hand, the second object OB2 (the object at the point B in FIG. 3) to be popped out is drawn by setting not only the main drawing area ARM but also the surrounding drawing area ARP as the drawing area. For example, at least a part of the second object OB2 protrudes from the surrounding drawing area ARP.

  For example, in FIG. 6, a background object such as a first object OB1 representing a door is drawn in the main drawing area ARM, and a background image is generated. That is, only the main drawing area ARM is set as the drawing area, the object is drawn, and an image of the main drawing area ARM is generated. Specifically, as the image of the main drawing area ARM, an image at the viewpoint of the left-eye virtual camera and an image at the viewpoint of the right-eye virtual camera are generated. At this time, in FIG. 6, the surrounding drawing area ARP is in a state where no image is written (black) or in a state where the image is filled with a predetermined color.

  Next, both the main drawing area ARM and the surrounding drawing area ARP are set as the drawing area, and the second object OB2 (OB2R, OB2L) representing the character to be popped out is drawn.

  Here, in FIG. 6, since the object OB2 is not so close to the virtual camera (left-eye virtual camera, right-eye virtual camera) side, the drawing positions of the object images OB2R and OB2L are not misaligned. The degree of popping out is small.

  On the other hand, in FIG. 7, the object OB2 is closer to the virtual camera side, the drawing positions of the object images OB2R and OB2L are greatly displaced, and the degree of popping out from the screen is large.

  In addition, in FIG. 7, a part of the object OB2 is drawn not only in the main drawing area ARM but also in the surrounding drawing area ARP. Therefore, when viewed from the user, an image is generated as if the object OB2 appears to protrude greatly from the screen to the near side. That is, in FIG. 4, a stereoscopic expression in which the object OB <b> 2 appears to protrude greatly from the screen of the display unit 190 to the near side cannot be realized. On the other hand, in FIG. 7, it is possible to realize a stereoscopic expression in which the object OB2 appears to protrude greatly from the pseudo screen expressed by the main drawing area ARM.

  In FIG. 8, the object OB2 is moved in the right direction as viewed from the virtual camera, and a part of the object OB2 is drawn in the surrounding drawing area ARP in the right direction of the main drawing area ARM. Accordingly, when viewed from the user, the object OB2 appears to jump out of the screen in the right direction. That is, in FIG. 4, the stereoscopic expression in which the object OB <b> 2 appears to protrude rightward on the screen of the display unit 190 cannot be realized. On the other hand, in FIG. 8, it is possible to realize a stereoscopic expression in which the object OB2 appears to protrude rightward from the pseudo screen expressed by the main drawing area ARM.

  FIG. 9 is a diagram for explaining advantages of the method of this embodiment. For example, even in the conventional method of FIG. 4, it is possible to move the object near the center of the screen to the virtual camera VCL, VCR side so as to jump out greatly. However, if the object at the left end or the right end of the screen is to be protruded greatly, the object moves outside the common area of the left-eye and right-eye virtual cameras VCL, VCR, and the visual field range. I couldn't get into the 3D, so I couldn't express a big 3D view. Further, it is not possible to express that an object near the right edge of the screen is moved further to the right and jumped out, or an object near the left edge of the screen is further moved to the left and popped out.

  On the other hand, in the method of the present embodiment, the main drawing area ARM having a size smaller than the actual screen size can be seen by the user as a pseudo screen. Therefore, as shown in FIG. 9, not only the object OB2A near the center of the screen but also the objects OB2B and OB2C near the edge of the pseudo screen by the main drawing area ARM are greatly increased toward the virtual cameras VCL and VCR. It is possible to express moving and jumping out.

  Further, according to the method of the present embodiment, the object OB2D near the left end in FIG. 9 is further projected leftward from the screen (ARM), or the object OB2E near the right end is further moved rightward from the screen (ARM). It is possible to express things like jumping out.

  That is, in the prior art of FIG. 4, a space for arranging objects cannot be provided on the left side of the screen or on the right side of the right end. On the other hand, in the present embodiment, as shown in FIG. 9, an object arrangement space can be provided on the left side of the pseudo end screen and the right side of the right end part of the main drawing area ARM. Accordingly, it is possible to make the object jump out from the edge of the screen in the left direction or the right direction more freely than in the past, and the degree of freedom of stereoscopic expression can be improved.

  The main drawing area ARM and the surrounding drawing area ARP are separately provided for drawing the left eye video (for drawing at the first viewpoint) and for drawing the right eye video (for drawing at the second viewpoint). May be set. For example, as shown in FIG. 10A, the main drawing area ARML for the left eye (for the first viewpoint) and the main drawing area ARMR for the right eye (for the second viewpoint) are shifted left and right. It may be set with. In this way, as shown in FIG. 10B, it is possible to perform video expression as if the display screen has moved to a position different from the actual position (ARMC position, back position). With this setting, the object to be popped out is drawn using the surrounding drawing area, so that the expression popping out of the screen can be more effectively displayed as shown in FIG. It becomes possible to do.

2.2 Control of Main Drawing Area Setting State In this embodiment, the setting state such as the size, shape, or position of the main drawing area may be controlled in real time. For example, the setting state of the main drawing area is controlled based on given information.

  For example, in FIGS. 11A to 12B, the setting state such as the size of the main drawing area ARM is controlled based on the information of the second object OB2 that is the pop-out target object. For example, in FIGS. 11A and 11B, the position of the object OB2 changes and approaches the virtual cameras VCL and VCR, and the size of the main drawing area ARM changes in conjunction with the change of the position. is doing. Specifically, the size of the main drawing area ARM decreases as the position of the object OB2 approaches the virtual cameras VCL and VCR. By reducing the size of the main drawing area ARM in this way, the user can be given a feeling that the object OB2 is projected more rapidly than the case where the size of the main drawing area ARM is constant. And the pop-up effect in the stereoscopic view can be improved. That is, the main drawing area ARM corresponding to the pseudo screen in FIG. 7 and the like is reduced, and the distance between the object images OB2L and OB2R for the left eye and the right eye of the object OB2 is increased, so that the main drawing area ARM is obtained. As compared with the case where the size of the object OB2 is fixed, the degree of pop-out of the object OB2 is further emphasized.

  11A and 11B, the size of the main drawing area ARM is changed based on the position of the object OB2 (positional relationship with the virtual camera), but only the size of the main drawing area ARM is used. Instead, the shape and position (arrangement position) of the main drawing area ARM may be changed. Further, the size, shape, or position of the main drawing area ARM may be changed based on direction information (traveling direction, line-of-sight direction) and movement information (speed, acceleration) instead of the position information of the object OB2. For example, as the arrangement position of the main drawing area ARM is moved in a direction corresponding to the moving direction of the object OB2, or the speed or acceleration of the object OB2 increases, the change rate of the size, shape, or position of the main drawing area ARM increases. May be.

  12A and 12B, the setting state of the main drawing area ARM is controlled based on the number information (appearance number information) of the second object OB2. For example, in FIG. 12A, the number of objects OB2 is one, but in FIG. 12B, many objects OB2A to OB2G appear. As described above, when the number of second objects in which the main drawing area ARM and the surrounding drawing area ARP are set as the drawing area increases, the size of the main drawing area ARM decreases in association with the increase in the number. Thus, by reducing the size of the main drawing area ARM, it is possible to improve the pop-out effect in the stereoscopic view compared to the case where the size of the main drawing area ARM is constant. That is, as compared with FIG. 12A, a larger number of objects appear to jump out in front of the user's eyes, and when the object represents a monster or the like, the user's fear or the like is enhanced. And can achieve an unprecedented type of video effect.

  In FIGS. 12A and 12B, the setting state such as the size of the main drawing area ARM is controlled based on the number information of the second object, but the second object screen (display area) is displayed. The setting state of the main drawing area ARM may be controlled based on the occupied area information in (). For example, when the occupied area (ratio of occupied area) on the screen of the second object is increased, the size of the main drawing area ARM is reduced in the same manner as in FIGS. 12 (A) and 12 (B). By controlling using the occupied area information in this way, it is possible to obtain the same effect as the control of the main drawing area ARM by the number information of the second object.

  Further, the main drawing area ARM and the surrounding drawing area ARP as described with reference to FIGS. 10A and 10B are set separately for the left eye drawing and the right eye drawing. In this case, this area may be changed dynamically. For example, as the display object pops out, it is more effective to set the shift between the main drawing area ARML for the left eye and the main drawing area ARMR for the right eye so that the area moves to the back side from the screen. Pop-up expression is possible.

  In the present embodiment, the setting state of the main drawing area ARM may be controlled based on user input information (operation information).

  For example, FIG. 13A shows an example of a game environment setting screen (option setting screen) for the user to set his / her own game play environment.

  For example, in FIG. 13A, the user can set the stereoscopic viewing method, the stereoscopic viewing strength, the television size, the distance to the television, and the like as the stereoscopic viewing options in the game environment setting. Various methods such as a polarization method using polarized glasses and a shutter method using a liquid crystal shutter can be set as the stereoscopic method.

  The stereoscopic intensity corresponds to the inter-camera distance between the left-eye virtual camera and the right-eye virtual camera, and the user can set the stereoscopic intensity to achieve a stereoscopic effect desired by the user. It becomes possible to see a visual image. The television size is the size of the television (display unit) on which the stereoscopic image is displayed. The distance to the television is the distance from the viewing position of the user to the television. When the TV size and the distance to the TV change, even if the same inter-camera distance is set, the strength of the stereoscopic effect that the user feels is different. Therefore, it is desirable to perform a correction process for the inter-camera distance according to the TV size and the distance to the TV.

  For example, it is assumed that the stereoscopic intensity is set to a weak value on the option screen in FIG. Then, as shown in FIG. 13B, the inter-camera distance DS between the left-eye virtual camera VCL and the right-eye virtual camera VCR becomes narrower. When the inter-camera distance DS is reduced in this way, the stereoscopic effect is slightly conservative, and objects at short distances are easily viewed stereoscopically. On the other hand, the stereoscopic effect of distant objects (distant positions in the depth direction) is faded.

  On the other hand, assume that the stereoscopic screen intensity is set to a strong value on the option screen of FIG. Then, the inter-camera distance DS is increased as shown in FIG. When the inter-camera distance DS is increased in this way, the user feels a stronger stereoscopic effect. However, if the inter-camera distance DS is not set shorter than the distance corresponding to the user's binocular distance, it causes the user's discomfort and the like.

  In this embodiment, the setting state such as the size of the main drawing area ARM is controlled based on the stereoscopic intensity setting information input by the user as shown in FIG. That is, in conjunction with the control of the inter-camera distance DS based on the stereoscopic intensity setting information input by the user, the setting state such as the size of the main drawing area ARM is also controlled.

  For example, as shown in FIG. 13B, when the stereoscopic intensity is set to a low value, the inter-camera distance DS is reduced and the size of the main drawing area ARM is increased. In this manner, the stereoscopic strength is weakened by reducing the inter-camera distance DS, and the pop-out effect in the stereoscopic vision described with reference to FIGS. 6 and 7 is reduced by increasing the size of the main drawing area ARM. .

  On the other hand, when the stereoscopic intensity is set to a strong value as shown in FIG. 13C, the inter-camera distance DS is increased and the size of the main drawing area ARM is decreased. In this manner, the stereoscopic strength increases as the inter-camera distance DS increases, and the pop-out effect in the stereoscopic view increases as the size of the main drawing area ARM decreases. By increasing the stereoscopic intensity and the pop-up effect in conjunction with each other, it is possible to realize a stereoscopic pop-up expression that has a greater impact on the user. Note that information corresponding to the size of the main drawing area ARM may be directly input to the user as input information without being linked to the stereoscopic intensity in this way.

  In the present embodiment, the setting state of the main drawing area ARM may be controlled based on the time information.

  For example, in FIG. 14, the size of the main drawing area ARM is changed based on the time information. Specifically, the size of the main drawing area ARM is changed based on the elapsed time from the start of the game, and the size of the main drawing area ARM is reduced as time elapses. For example, at the game start timing, the main drawing area ARM has a normal size (for example, a screen size), and then the main drawing area ARM is reduced in size so that the user does not notice as time passes. Then, when the size of the main drawing area ARM is reduced, an event for causing the object OB2 to move to the virtual camera side and jump out is generated as shown in FIG. In this way, the pop-out video effect as shown in FIG. 7 can be realized without notifying the user that the display area is set narrow in advance.

  Note that the start timing of the passage of time for changing the size of the main drawing area ARM or the like may be the start timing of the game itself or the start timing of each game stage constituting the game. Alternatively, it may be an occurrence timing of an event that occurs in the game. Further, the time information may not be the elapsed time itself but may be information equivalent to the elapsed time (for example, play time). Further, the shape and arrangement position of the main drawing area ARM may be changed based on the time information. For example, the shape of the main drawing area ARM is changed from the first shape (for example, a rectangle) to the second shape (for example, a circle) with the passage of time. Further, a process of shifting the arrangement setting position of the main drawing area ARM with time may be performed.

  In the above description, the second object information, time information, and user input information are exemplified as given information for controlling the setting state of the main drawing area ARM. However, the present embodiment is not limited to this. For example, the given information for controlling the setting state of the main drawing area ARM may be information on an event occurrence flag. For example, when a given event occurs in the game and an event generation flag is set, control of the setting state of the main drawing area ARM is started.

2.3 Image Processing on Surrounding Drawing Area In this embodiment, image processing may be performed on the surrounding drawing area image around the main drawing area.

  For example, in FIG. 15, gradation processing is performed on the image in the surrounding drawing area ARP. This gradation process is a process of bringing the pixel color closer to the target color toward the outside (outside the screen) of the surrounding drawing area ARP. For example, gradation processing is performed using the color of the frame (edge) of the display unit 190 as the target color. Alternatively, gradation processing is performed using the surrounding color of the display unit 190 (the surrounding color when viewed from the player side) as a target color to realize a so-called optical camouflage. By doing so, it is possible to eliminate the presence of the display unit 190, and it is possible to make the main drawing area ARM look like a real screen.

  Even when the gradation process is performed on the image in the surrounding drawing area ARP as described above, the gradation process is not performed when the second object is drawn in the surrounding drawing area. Alternatively, even if gradation processing is performed on the second object, the mode is changed to perform weak gradation processing.

  In this way, when realizing a video effect that causes the object OB2 to jump out of the screen as shown in FIG. 7, gradation processing is not performed on the object OB2, and the user does not feel unnaturalness. A stereoscopic image can be generated.

  The user uses the camera provided in the operation unit 160 such as a game controller to photograph the display unit 190 and its surroundings, and from the obtained captured image, the frame color of the display unit 190 and the display unit 190 are displayed. The color of the surrounding background may be acquired. In this case, a gradation process as shown in FIG. 15 may be performed by setting the frame color or background color acquired from the captured image as the target color.

  The image processing for the image in the surrounding drawing area ARP is not limited to the gradation processing as shown in FIG. 15, and various modifications can be made. For example, blurring processing (blur processing) may be performed on the image in the surrounding drawing area ARP.

  For example, FIG. 16 shows an example of a race game image, in which a race car object OB1 operated by the user is drawn in the main drawing area ARM. On the other hand, in the surrounding drawing area ARP, a background image around the object OB1 of the race car is drawn.

  In this case, in order to make the user feel realistic that the race car is running at a high speed, a blurring process is performed on the image of the surrounding drawing area ARP. By doing so, it is possible to realize an image expression in which the background appears to flow as the race car runs.

  In FIG. 16, gravel, pebbles, sparks, and the like flying from near the tires of the race car are drawn as second objects OB2A and OB2B. Specifically, similarly to the object OB2 representing the character in FIG. 7, the objects OB2A and OB2B are moved to the virtual camera side at a high speed.

  Even when the image of the surrounding drawing area ARP is blurred as described above, when the objects OB2A and OB2B representing gravel and the like are drawn on the surrounding drawing area ARP, the objects OB2A and OB2B are not displayed. Do not perform blur processing. Alternatively, even if the blurring process is performed on the objects OB2A and OB2B, the mode is changed so that the weak blurring process is performed.

  In this way, it is possible to express a sense of speed by performing the blurring process on the background around the race car, and the objects OB2A and OB2B representing gravel and the like are clearly not subjected to the blurring process. It is possible to make an expression that jumps to the viewpoint side of the user with the obtained image. Therefore, it is possible to realize both the expression of the speed feeling by the blurring process and the stereoscopic expression having a strong pop-out effect.

  Note that the blurring process can be realized by using, for example, a blurring filter. Specifically, a linear texture filtering technique that is a blurring process using bilinear filtering, a box filter sampling technique that is a blurring process using multiple textures that simultaneously use multiple textures, and the like can be employed. In FIG. 16, the drawing positions of the left-eye object image and the right-eye object image are the same for the sake of simplicity.

2.4 Modification Next, a method of a modification of the present embodiment will be described.

  For example, in FIGS. 6 to 8, the surrounding drawing area ARP is set to a predetermined color such as black, but the present embodiment is not limited to this. For example, a stereoscopic image in which a display frame image is drawn may be generated in the surrounding drawing area ARP.

  For example, in FIG. 17A, a frame image representing a curtain around the screen of a movie theater is generated and drawn in the surrounding drawing area ARP. A location corresponding to the movie theater screen is set in the main drawing area ARM. In FIG. 17B, a frame image representing the periphery of an old-fashioned television screen is generated and drawn in the surrounding drawing area ARP. A location corresponding to the television screen is set in the main drawing area ARM.

  If such a frame image is generated, unnaturalness felt by the user can be reduced even when the size of the main drawing area ARM is set to a size smaller than the screen of the display unit 190. That is, the main drawing area ARM can be made to feel to the user as if it were a real screen. In this way, the main drawing area ARM is set to a pseudo screen, and a stereoscopic effect in which the object OB2 is projected from the pseudo screen as shown in FIGS. 6 to 8 can be realized.

  Note that the display frame image drawn in the surrounding drawing area ARP is not limited to FIGS. 17A and 17B, and various types of display frame images such as a decoration frame image of a photographic printer can be employed. .

  Furthermore, the surrounding drawing areas may be set separately for drawing the left eye image (for drawing at the first viewpoint) and for drawing the right eye image (for drawing at the second viewpoint). For example, as shown in FIG. 18A, the surrounding drawing area ARPL for the left eye (for the first viewpoint) and the surrounding drawing area ARPR for the right eye (for the second viewpoint) are shifted left and right. (192 represents the entire screen). By doing so, as shown in FIG. 18B, a screen displaying objects arranged in the surrounding area (for example, display frame images in FIGS. 17A and 17B) is displayed. Thus, it is possible to express an image as if it has moved to a position of a depth value different from the actual position (ARPC position, front position). Of course, the right and left shift of the surrounding drawing area may be changed dynamically. For example, when displaying an object that usually appears on the near side of the actual screen and the object pops out from here, the left and right that move to the back side in conjunction with the projecting state of the object. You may set the gap.

  6-8, the main drawing area ARM has a rectangular shape, but is not limited thereto. For example, in FIG. 19A, the main drawing area ARM has a keyhole shape. As shown in FIG. 19B, when a ghost occurrence event occurs, the main drawing area ARM and the surrounding drawing area ARP are set as the drawing area, and the objects OB2A and OB2B representing the ghost are drawn. By doing this, it is possible to realize a stereoscopic expression that looks as if a ghost has popped out of the keyhole, and it is possible to provide an unprecedented video effect to the user.

  Various objects can be assumed as the second object to be popped out. For example, FIGS. 20A and 20B are examples of an RPG (role playing) game. In FIG. 20A, enemy monster objects OB1A, OB1B, and OB1C (first objects) are drawn in the main drawing area ARM.

  In FIG. 20B, the information display object OB2 of the RPG game is drawn as the second object when the user (player) attacks. In the information display object OB2, information such as the name of each character operated by the user and the hit point / magic point of each character is displayed. In FIG. 20B, a stereoscopic image is generated in which at least a part of the information display object OB2, which is the second object, protrudes from the surrounding drawing area ARP. In FIG. 20B, the drawing positions of the left-eye object image and the right-eye object image are the same for the sake of simplicity.

  As shown in FIG. 20B, by generating an image in which the information display object OB2 appears to pop out, a user interface of an unprecedented type can be realized by stereoscopic expression.

  As shown in FIG. 21, the information display object OB3 (display objects such as physical strength gauges, hit points, characters, icon information, etc.) is drawn in the surrounding drawing area ARP, and the objects OB2A to OB2C such as characters are jumped out The objects OB2A to OB2C may be drawn using both the main drawing area ARM and the surrounding drawing area ARP as drawing areas. That is, an image of the information display object OB3 as shown in FIG. 21 may be generated as a display frame image drawn in the surrounding drawing area ARP.

2.5 Detailed Processing Example Next, a detailed processing example of this embodiment will be described with reference to the flowcharts of FIGS.

  FIG. 22 is a flowchart for explaining details of the stereoscopic image generation processing of the present embodiment.

  First, the main drawing area is set as a drawing area (step S1). Then, an object is drawn in the main drawing area from the viewpoint of the left-eye virtual camera, and a left-eye image in the main drawing area is generated (step S2). In addition, an object is drawn in the main drawing area from the viewpoint of the right-eye virtual camera, and an image for the right eye in the main drawing area is generated (step S3).

  Next, the entire main drawing area and surrounding drawing area are set as a drawing area (step S4). Then, an image for the left eye is generated by drawing the object in the entire region of the main drawing area and the surrounding drawing area from the viewpoint of the left-eye virtual camera (step S5). Further, an image for the right eye is generated by drawing an object in the main drawing area and the whole drawing area from the viewpoint of the virtual camera for the right eye (step S6).

  As described above, a stereoscopic image capable of realizing the pop-out effect as described in FIGS. 6 to 8 is generated.

  FIG. 23 is a flowchart for explaining details of processing for controlling the setting state of the main drawing area.

  First, it is determined whether or not an appearance event of the pop-out target object (second object) has occurred (step S11). When an appearance event occurs, distance information depth distance from the virtual camera is acquired based on the position information of the pop-out target object (step S12). Then, as described in FIGS. 11A and 11B, the size of the main drawing area is set based on the acquired distance information (step S13).

  Next, the left eye image is generated by drawing the object in the main drawing area and the surrounding drawing area of the set size (step S14). In addition, the right eye image is generated by drawing the object in the main drawing area and the surrounding drawing area of the set size (step S15).

  As described above, a method for controlling the setting state such as the size of the main drawing area based on the information of the second object is realized.

  FIG. 24 is a flowchart for explaining details of processing when image processing is performed on an image in the surrounding drawing area.

  First, a left-eye image and a right-eye image are generated by the processing described with reference to FIG. 22 and the like (step S21). Then, image processing such as blurring or gradation processing is performed on the image in the drawing area around the left eye image (step S22). In addition, image processing such as blurring or gradation processing is performed on the image in the drawing area around the right-eye image (step S23).

  Next, the object to be popped out is drawn without performing image processing such as blurring or gradation processing, and a final left eye image is generated (step S24). Further, the object to be popped out is drawn without performing image processing such as blur processing or gradation processing, and a final right eye image is generated (step S25).

  As described above, it is possible to generate a stereoscopic image by the method described with reference to FIGS. 15 and 16.

  FIG. 25 is a flowchart for explaining the details of the process of setting the main drawing area separately on the left and right.

  First, the left-eye main drawing area is set as a drawing area (step S31). Then, an object is drawn in the left-eye main drawing area from the viewpoint of the left-eye virtual camera, and an image in the left-eye main drawing area is generated (step S32).

  Next, the right eye main drawing area is set as the drawing area (step S33). Then, an object is drawn in the right eye main drawing area from the viewpoint of the right eye virtual camera to generate an image in the right eye main drawing area (step S34).

  Next, the entire area of the main drawing area and the surrounding drawing area is set as a drawing area (step S35). Then, an image for the left eye is generated by drawing an object in the entire area using the image in the main drawing area for the left eye generated in step S32 from the viewpoint of the virtual camera for the left eye (step S36). ). Further, the right eye image is generated by drawing the object in the entire area using the image in the right eye main drawing area generated in step S34 from the viewpoint of the right eye virtual camera (step S37). .

  As described above, it is possible to realize a method of setting the main drawing areas as described in FIGS. 10A and 10B separately on the left and right.

  Although the present embodiment has been described in detail as described above, it will be easily understood by those skilled in the art that many modifications can be made without departing from the novel matters and effects of the present invention. Accordingly, all such modifications are intended to be included in the scope of the present invention. For example, a term described at least once together with a different term having a broader meaning or the same meaning in the specification or the drawings can be replaced with the different term in any part of the specification or the drawings. The main drawing area, the surrounding drawing area setting process, the first and second object drawing processes, the main drawing area setting state control process, the surrounding drawing area image processing method, etc. are also described in this embodiment. However, the present invention is not limited thereto, and techniques equivalent to these are also included in the scope of the present invention. The present invention can be applied to various games. Further, the present invention is applied to various image generation systems such as a business game system, a home game system, a large attraction system in which a large number of players participate, a simulator, a multimedia terminal, a system board for generating a game image, and a mobile phone. it can.

  The method of the present embodiment is also applicable to a stereoscopic image generation method as described in, for example, Japanese Patent Application Laid-Open No. 2004-17858. In this image generation method, for example, as shown in FIG. 26A, an image for the left eye is created by the view volume VVL from the virtual camera for the left eye VCL, and the view volume VVR from the virtual camera for the right eye VCR is used. Create an image for the right eye. Then, stereoscopic viewing is realized by the left eye image and the right eye image, and the player views the stereoscopic image from the left eye viewpoint VPL and the right eye viewpoint VPR as shown in FIG. Thereby, there is little contradiction of focus adjustment and a feeling of depth, and a more natural stereoscopic vision can be realized.

  Even in such a stereoscopic image generation method, an unprecedented type of stereoscopic expression can be realized by performing an object drawing process by setting a main drawing area and a surrounding drawing area as shown in FIG. . For example, a game field (first object) such as a game maze is drawn in the main drawing area, and a character or the like moving on the game field is drawn as the second object. In this way, even a tall character can be drawn out of the surrounding drawing area as viewed from the user's viewpoint, and the degree of freedom of stereoscopic expression can be improved.

VCL virtual camera for left eye, virtual camera for VCR right eye, SC screen,
VVL Left eye view volume, VVR Right eye view volume,
CNL, CNR, CFL, CFR clipping plane,
ARM main drawing area, ARP surrounding drawing area,
OB1 first object, OB2, OB2A-OB2G second object,
OB2L, OB2R object image,
100 processing unit, 102 game calculation unit, 104 object space setting unit,
106 moving body calculation unit, 108 virtual camera control unit, 110 drawing area setting unit,
120 image generation unit, 122 image processing unit, 124 image generation unit for left eye,
126 right-eye image generation unit, 170 storage unit, 172 object data storage unit,
178 Drawing buffer, 180 information storage medium, 190 display unit, 192 sound output unit,
194 Auxiliary storage device, 196 communication unit

Claims (18)

An object space setting unit for setting an object space in which a plurality of objects are arranged;
A drawing area setting unit for performing a setting process of a main drawing area and a surrounding drawing area set around the main drawing area;
For the first object of the plurality of objects, the main drawing area is set as a drawing area, and for the second object of the plurality of objects, the main drawing area and the As an image generation unit that generates a stereoscopic image by performing a drawing process in which the entire surrounding drawing area is set as a drawing area,
A program characterized by causing a computer to function. In claim 1,
The drawing area setting unit
A program that controls a setting state that is at least one of a size, a shape, and a position of the main drawing area based on given information. In claim 2,
The drawing area setting unit
A program for controlling the setting state of the main drawing area based on information of the second object. In claim 3,
The drawing area setting unit
A program for controlling the setting state of the main drawing area based on at least one of position information, direction information, movement information, number information, and occupied area information on a screen of the second object. In any of claims 2 to 4,
The drawing area setting unit
A program for controlling the setting state of the main drawing area based on user input information. In claim 5,
The drawing area setting unit
A program for controlling the setting state of the main drawing area based on stereoscopic intensity setting information input by the user. In any one of Claims 2 thru | or 6.
The drawing area setting unit
A program for controlling the set state of the main drawing area based on time information. In any one of Claims 1 thru | or 7,
The drawing area setting unit
A setting state of at least one of the main drawing area and the surrounding drawing area is made different between drawing at a first viewpoint and drawing at a second viewpoint in a stereoscopic view. Program. In claim 8,
The drawing area setting unit
A program in which at least one of the main drawing area and the surrounding drawing area is set to be different at the time of drawing at the first viewpoint and at the time of drawing at the second viewpoint. . In any one of Claims 1 thru | or 9,
The image generation unit includes an image processing unit,
The image processing unit
While performing image processing on the image of the surrounding drawing area,
When drawing the second object in the surrounding drawing area, the image processing is not performed, or an image processing different from the image processing is performed. In claim 10,
The image processing unit
A gradation process is performed on the image of the surrounding drawing area to bring the pixel color closer to the target color toward the outside of the surrounding drawing area.
A program characterized in that when the second object is drawn in the surrounding drawing area, the gradation processing is not performed or gradation processing with a low gradation degree is performed. In claim 10,
The image processing unit
While performing a blurring process on the image of the surrounding drawing area,
A program characterized by not performing the blurring process or performing a blurring process with a low degree of blurring when the second object is drawn in the surrounding drawing area. In any one of Claims 1 to 12,
The image generation unit
A program for generating a stereoscopic image in which a display frame image is drawn in the surrounding drawing area. In any one of Claims 1 thru | or 13.
The image generation unit
A program for generating a stereoscopic image in which at least a part of the second object protrudes in the surrounding drawing area. In claim 14,
The image generation unit
A program for generating a stereoscopic image in which at least a part of the information display object as the second object is drawn in the surrounding drawing area. In any one of Claims 1 thru | or 15,
The image generation unit
For the first object, the main drawing area is set as a drawing area, and for the second object, the main drawing area and the entire surrounding drawing area are set as the drawing area. A left-eye image generation unit that performs drawing processing and generates a left-eye image;
For the first object, the main drawing area is set as a drawing area, and for the second object, the main drawing area and the entire surrounding drawing area are set as the drawing area. A program that includes a right-eye image generation unit that performs drawing processing and generates a right-eye image.   A computer-readable information storage medium, wherein the program according to any one of claims 1 to 16 is stored. An object space setting unit for setting an object space in which a plurality of objects are arranged;
A drawing area setting unit for performing a setting process of a main drawing area and a surrounding drawing area set around the main drawing area;
For the first object of the plurality of objects, the main drawing area is set as a drawing area, and for the second object of the plurality of objects, the main drawing area and the An image generation unit that performs a drawing process in which the entire surrounding drawing area is set as the drawing area and generates a stereoscopic image;
An image generation system comprising:

Images