JP5359054B2 - GAME DEVICE, GAME DEVICE IMAGE PROCESSING METHOD, GAME IMAGE PROCESSING PROGRAM, ITS STORAGE MEDIUM, AND GAME DEVICE IMAGE PROCESSING METHOD - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily make an optional color correction in response to the moving position of a movable body. <P>SOLUTION: The CPU 101 of a control apparatus 20 reads each control program which is stored in a storage apparatus 104, and acquires a color correction label which is set in the index of the applicable point when the movable body 50 passes a correction value switching point of a path 60 which is formed along a course 40. Then, the CPU 101 performs a color data correction process for correcting the luminosity by composing the correction value of color correction data corresponding to a color correction level to the correction value of the applicable color data. In the storage apparatus 104, various control programs as a color correction data setting means 120, a correction value switching point setting means 130, a correction value switching determining means 140, a color correction data acquiring means 150, and a color data correcting means 160 are stored. In addition, in the storage apparatus 104, an image database 170, a color correction index database 180, and a color correction value database 190 are stored. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention generates a game according to the position of a moving body that moves along a course displayed on a monitor, and corrects color correction data when the moving body passes through each point. The present invention relates to an image processing method for an apparatus, an image processing program, a storage medium thereof, and an image processing method for a game apparatus.

  In computer graphics (CG) used in a game device, for example, when image processing is performed using polygons, the coordinates and brightness are set for a plurality of pixels constituting each polygon. The coordinates of each pixel are obtained from the vertex coordinates of the polygon in the viewpoint coordinate system set in the virtual three-dimensional space where the polygon is arranged. In the case of color display, the luminance of each pixel is set for each color of red (R), green (G), and blue (B), and is given as a digital value of 8 bits for each color, for example. Conventionally, the luminance of each pixel is set when a program is created.

  Here, the brightness of a pixel will be briefly described. When the brightness of an image expressed in grayscale is set to 8 bits, the brightest value (255) is white, the darkest value (0) is black, Is a gray whose brightness changes in steps from white to black. Further, when the R, G, and B values are set with 8 bits, the brightness is determined for each color by setting the brightest value (255) and the darkest value (0) to each color.

  By the way, human vision has a property that when a dark environment is viewed in a bright environment, the dark environment is felt darker, and when a bright environment is viewed in a dark environment, the bright environment is felt brighter. For example, when looking inside the tunnel from outside the tunnel, it should look dark. However, if the inside of the tunnel is set to dark brightness, that is, black, it is inconvenient because the entire screen becomes black when proceeding to the image in the tunnel. Also, when looking outside the tunnel from inside the tunnel, it should look pure white. However, if the outside of the tunnel is set to be completely white, it is inconvenient because the entire screen becomes completely white when proceeding to the image outside the tunnel exiting the tunnel.

  Furthermore, when human vision changes from a bright environment to a dark environment, it gradually adapts to the dark environment and feels the brightness in the dark environment. Therefore, conventionally, according to image processing that imitates human vision, a predetermined brightness is given in advance to an image in a tunnel that should appear dark when viewed from outside the tunnel. Even when looking inside the tunnel, the brightness was displayed so that the inside of the tunnel could be seen. Also, the image outside the tunnel after exiting the tunnel is given brightness in advance after the human vision adapts to the brightness so that the image outside the tunnel can be seen even when looking outside the tunnel from inside the tunnel. It was displayed.

  For example, in a game device in which a player performs a race (competition) using a moving body simulating an automobile or the like, when the moving body is operated (operated), the moving body (not shown) displayed on the monitor Assuming that the scene is moving from the outside of the tunnel to the inside of the tunnel, the image outside the tunnel is set to a relatively bright brightness, and the image inside the tunnel is set to a relatively dark brightness. Therefore, when the moving body advances and becomes an image in the tunnel, the image with the dark luminance is displayed on the monitor.

  As described above, as a method of automatically adjusting the luminance of the image, the R, G, and B values of each pixel of the image of each frame are taken, and the luminance value Y is calculated by an arithmetic expression using the R, G, and B values. There is a processing method for obtaining the average brightness value of a predetermined area and automatically adjusting the brightness of the background based on the average brightness value (see, for example, Patent Document 1).

Further, as a processing procedure, (procedure 1) lighting the virtual space with a virtual light source in the space, (procedure 2) projecting the virtual space with a virtual camera in the space, and an image as a result of the projection (Procedure 3) An appropriate brightness range is determined from the obtained average value, and the brightness of the image is corrected.
Japanese Patent No. 3987296

  In the above conventional game device, since brightness with sufficient accuracy is required, the brightness is recorded in pixel units in real numbers, but this processing method is more processing than recording with a low-precision integer. Therefore, for example, when a moving body such as an automobile travels on a course, the brightness of each pixel unit is calculated in the process of generating an image according to the traveling speed. There was a problem of exceeding the processing capacity of.

  Further, conventionally, in order to correct the brightness from the projection result of the virtual space, in order to perform an intentional color change (brightness correction, etc.), the arithmetic expression for changing or correcting the virtual space itself is used. Must be changed. For this reason, it takes a lot of time to rewrite the program, which makes it difficult to intentionally change the color.

  In view of the above circumstances, an object of the present invention is to provide a game apparatus, an image processing method for the game apparatus, an image processing program, a storage medium thereof, and an image processing method for the game apparatus that have solved the above-described problems.

In order to solve the above problems, the present invention has the following means.
(1) The present invention provides a game device that calculates a moving position of a moving body that moves along a course in a virtual space according to a player's operation, and generates an image of the moving position viewed from a virtual camera. Color correction data setting means for setting color correction data for correcting the color data of the image according to the moving position and moving direction of the moving body, and a correction value for setting an arbitrary position on the course as a correction value switching point A switching point setting unit; a correction value switching determining unit that determines that the moving body has passed the correction value switching point; and a determination that the moving body has passed the correction value switching point by the correction value switching determining unit. The color correction data acquisition means for acquiring the color correction data at the correction value switching point, and the correction value switching position acquired by the color correction data acquisition means. By providing color data correction means for correcting the color data of the image by synthesizing the correction value of the color correction data corresponding to the image with the color data of the image, the above problem is solved.
(2) The present invention is the game device according to claim 1, wherein the color correction data setting means sets color correction data on a path arranged in the course, and the moving body moves. The above-described problem is solved by setting different color correction data depending on whether the direction is the forward direction or the reverse direction of the course.
(3) The present invention is the game device according to claim 1, wherein the color correction data includes brightness, contrast, saturation, and change speed of an image, and the color data correction unit is configured to display the brightness of the image. The above-described problems are solved by correcting the color data of the image based on at least one parameter of contrast, saturation, and change speed.
(4) The present invention calculates the moving position of the moving body that moves along the course in the virtual space in accordance with the player's operation, and generates an image of the moving position viewed from the virtual camera. In the method, a procedure for setting color correction data for correcting the value of the color data of the image in accordance with the moving position and moving direction of the moving body in the control means of the game apparatus, and an arbitrary position on the course A procedure for setting as a correction value switching point, a procedure for determining that the mobile body has passed the correction value switching point, and a switch for the correction value when it is determined that the mobile body has passed the correction value switching point. The procedure for acquiring color correction data at a point and the color correction data corresponding to the acquired correction value switching point are combined with the color data of the image to combine the color data of the image. The above-described problem is solved by performing control to execute the procedure for correcting the data.
(5) The present invention calculates the moving position of the moving body based on the operation information input according to the player's operation, the position of the moving body moving along the course set in the virtual space, In an image processing program of a game device that generates an image viewed from a virtual camera corresponding to a moving position, color correction data for correcting color data of an image according to a moving position and a moving direction of the moving body is stored in a computer. A procedure for setting, a procedure for setting an arbitrary position on the course as a correction value switching point, a procedure for determining that the mobile body has passed the correction value switching point, and the mobile body switching the correction value. When it is determined that the point has passed, the procedure for acquiring the color correction data at the correction value switching point, and the color correction data corresponding to the acquired correction value switching point The above-described problem is solved by executing a procedure for correcting the color data of the image by synthesizing the correction value with the color data of the image.
(6) According to the present invention, a storage medium for a game image processing program that calculates a moving position of a moving body that moves along a course set in a virtual space and generates an image viewed from a virtual camera corresponding to the moving position. And setting a color correction data for correcting the color data of the image in accordance with the moving position and moving direction of the moving body, and an arbitrary position on the course as a correction value switching point. A procedure, a procedure for determining that the moving body has passed the correction value switching point, and obtaining color correction data at the correction value switching point when it is determined that the moving body has passed the correction value switching point. And correcting the color data of the image by combining the correction value of the color correction data corresponding to the acquired correction value switching point with the color data of the image. The above-mentioned problem is solved by storing a game image control program for executing the following procedure.
(7) The present invention calculates a movement position and a movement direction of a moving body that moves along a course in which a path is arranged in the virtual space according to a player's operation, and the movement position viewed from the virtual camera. An image processing method for a game device for generating an image in the game device, wherein the storage means of the game device corrects color data of the image according to the movement position and movement direction of the moving body, and the path the color correction data with the corresponding correction value switching points to be set is stored, the correction value switching point information set in the control unit of the game device, the position coordinates of the the position coordinates of the virtual camera path From the step of obtaining the orientation of the virtual camera in the course, and the step of selecting the correction value switching point set in the correction value switching point information from the orientation of the virtual camera Comparing the position coordinates of the virtual camera and the position coordinates of the correction value switching point, determining the nearest correction value switching point from the correction value switching point, and from the nearest correction value switching point obtaining the corresponding color correction data, a step of combining the color correction data to the image, a step of outputting the synthesized image to the display device, by the execution to Rukoto, to solve the above Is.
(8) According to the present invention, in the image processing method for a game device according to claim 7, in the step of determining the nearest correction value switching point, the control means of the game device is configured to determine the correction value switching point. Comparing the position coordinates with the position coordinates of the virtual camera, determining whether the virtual camera has passed the correction value switching point, and determining that the virtual value has passed the correction value switching point; a step of the value switching point is set as the correction value switching points nearest, by further run to Rukoto a solves the above problems.
(9) According to the present invention, in the image processing method for a game device according to claim 7 or 8, the color correction data stored in the storage means includes luminance information, contrast information, saturation information, and change speed information. becomes, in the step of combining the color correction data to the image, the control unit of the game device, based on the respective information, the Rukoto the correct complement the color of the image, which solves the above problems.

  According to the present invention, when it is determined that the mobile body has passed the correction value switching point, the color correction data at the correction value switching point is acquired, and the correction value of the color correction data corresponding to the acquired correction value switching point Is combined with the color data of the image to correct the color data of the image, so that it is possible to easily correct the brightness, hue, etc. according to the passing position of the moving object. The change in brightness during the process of moving to a place or the process of moving from a dark place to a bright place can be adjusted with an arbitrary correction value. The correction processing time can be greatly reduced.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view showing an embodiment of a game apparatus according to the present invention, and FIG. 2 is a plan view schematically showing a course for racing.

  As shown in FIG. 1, the game apparatus 10 has a lap time until one or two or more players reach the goal from the start on the course as shown in FIG. And a game device that performs a race for competing ranks by operating a moving body in a virtual space.

  A console 16 simulating a handle 14, a speedometer, a meter indicating the engine speed, and the like is disposed in front of the driver's seat 12 where the player is seated. A shift lever 18 for performing a gear change operation is provided on the side of the driver's seat 12, and an accelerator pedal and a brake pedal operated by the player are displayed below the console 16 (hidden in FIG. 1 and cannot be seen). Etc. are provided.

  Further, in the present embodiment, a course 40 as shown in FIG. 2 is formed in the virtual space, and on the course 40, a moving body 50 (a player or other player imitating a car or the like placed in the virtual space). The start position and the goal position of an object that is operated by the computer or controlled to move by a computer (hereinafter referred to as “moving object”) are set.

  Further, as shown in FIG. 2, a path 60 along the course 40 is formed on the center of the course 40 (eg, near the center line of the course). In this path 60, distance measurement points for determining the travel position (distance from the start point) of the moving body 50 traveling on the course 40 are set at predetermined intervals. In addition, since each of the distance measurement points is assigned a serial number as an index, the distance traveled from the start point of the moving body 50 or the distance to the goal can be determined by detecting the course path index of each point passed. It may be set as required. Note that the path 60 in the present embodiment indicates a point coordinate set for each point in the point sequence by setting a point sequence on a course arranged in the virtual space.

  When the player performs an operation, the moving body 50 is controlled to move from the start position of the course 40 in the traveling direction (in the direction of the arrow in FIG. 2), and the player moves the moving body 50 along the course 40 with a handle, an accelerator pedal, and a brake. While operating using a pedal or the like, the mobile object 50 is run toward the goal to advance the game.

  The course shown in FIG. 2 is a circular course, but is not limited thereto, and the start position and the goal position may be set at different positions. Furthermore, when traveling on a course, one or more checkpoints set at a predetermined position on the course may pass within the time limit so that the time limit until the next checkpoint or goal is further extended. .

  In addition, the game apparatus 10 includes a control device 20 that performs a game calculation and generates a course and an image of the moving body 50 that travels in the course, and a monitor 30 that displays an image generated by the control device 20.

  That is, based on the game program, the game progress process, the object is arranged in the virtual space, the coordinate position and the movement direction calculation process in the virtual space of the moving body, the viewpoint position and the line-of-sight direction provided in the virtual space are calculated, The control device 20 performs game score calculation processing and the like.

  Further, the game image (background image and moving body image) displayed on the monitor 30 follows an image from a virtual viewpoint set in the virtual space, preferably, as shown in FIG. A state of perspective in the so-called bird's-eye view format viewed from the set virtual camera (virtual viewpoint) 80, or a virtual camera set to move with the movement of the moving body 50 to the tip position of the moving body 50 ( It is a so-called first-person viewpoint format viewed from the (virtual viewpoint) 80, and an image of the traveling position of the moving body 50 is generated by the control device 20 and then output to the monitor 30.

  Accordingly, in the virtual space, the faster the moving body 50 moves in the virtual space, the faster the moving speed of the virtual camera (virtual viewpoint) that follows or moves with the moving body. The displayed background image is displayed so as to move from the front to the rear at a speed corresponding to the traveling speed of the moving body.

  FIG. 3A is an example of a block diagram illustrating a configuration of a game device, which can be applied to a game device for business use or home use, a personal computer, a portable computer, a mobile phone, and the like.

  As shown in FIG. 3A, the control device 20 of the game apparatus 10 functions as a CPU (Central Processing Unit) 101 that performs control processing of the entire apparatus and the race game, and a buffer that holds programs and data being executed by the CPU 101. A system memory 103 comprising a RAM (Random Access Memory), a storage device 104 having a database for storing various control programs for controlling a game, which will be described later, and various data such as output images and sounds, and when the device is activated A boot ROM (Read Only Memory) 105 that holds a program for initializing each block, a bus arbiter 107 that controls a bus for exchanging programs and data between the blocks, and a monitor (Polygon) object (or moving body) is output to the monitor based on the geometry processor 102 that calculates the position coordinates and orientation in the virtual space or two-dimensional coordinates, and the orientation and position coordinates of the object calculated by the geometry processor. A rendering processor 108 that generates (draws) an image to be processed, a graphic memory 109 that is connected thereto and stores data and commands for generating an image, an audio processor 111 that generates sound output from the speaker 113, and a connection thereto And an audio memory 112 that stores data and commands for generating sound.

  Further, the control device 20 is a peripheral for inputting an input signal corresponding to the operation amount of peripheral devices such as a handle 14, a shift lever 18, an accelerator pedal, a brake pedal, and a switch for key operation of a game controller or the like. An interface (I / F) 106 and a communication interface (I / F) 114 are connected. The other end of the communication interface (I / F) 114 is connected to another game device or a management server via a network such as a telephone line (not shown).

  Note that the system memory, graphic memory, and sound memory may be configured by DRAM (Dynamic Random Access Memory), SRAM (Static Random Access Memory), and the like. One memory may be connected to the bus arbiter and used in common for each function.

  Furthermore, as the storage device 104, for example, an IC memory such as a mask ROM or a flash ROM, an HDD (Hard Disk Drive), a CD (Compact Disk) drive, a DVD (Digital Versatile Disk) drive, etc. An apparatus capable of optically reading data and an optical disk or a magnetic disk may be used.

  Furthermore, each function block only needs to exist in the control device as a function, and the function blocks may be integrated with each other, or each component in the function block may be separated as another block.

  FIG. 3B is a diagram schematically showing each control program and database stored in the storage device 104.

  In this embodiment, when the CPU 101 reads each control program stored in the storage device 104, the moving body 50 or the virtual camera (virtual viewpoint) 80 passes the correction value switching point of the path 60 formed on the course 40. Color data correction processing for correcting the brightness of an image by acquiring the color correction level set at the point and combining the correction value of the color data with the correction value of the color correction data corresponding to the color correction level Execute. Details will be described later.

  As shown in FIG. 3B, the storage device 104 includes a color correction data setting unit 120, a correction value switching point setting unit 130, a correction value switching determination unit 140, a color correction data acquisition unit 150, and color data correction. Various control programs for causing the CPU to function as the means 160 are stored. Furthermore, the storage device 104 stores an image database 170, a color correction index database 180, and a color correction value database 190.

  The color correction data setting unit 120 includes color correction index database 180 and color correction data for correcting the correction value of the color data of the image according to the moving position and moving direction of the moving object 50 or the virtual camera (virtual viewpoint) 80. It consists of a control program for setting in the color correction value database 190.

  The correction value switching point setting means 130 includes a control program for setting a predetermined position on the course 40 as a correction value switching point.

  The correction value switching determination unit 140 includes a control program that determines that the moving object 50 or the virtual camera (virtual viewpoint) 80 has passed the correction value switching point.

  When the correction value switching determination unit 140 determines that the moving object 50 or the virtual camera (virtual viewpoint) 80 has passed the correction value switching point, the color correction data acquisition unit 150 obtains the color correction data at the correction value switching point. It consists of a control program acquired from the color correction value database 190.

  The color data correction unit 160 combines the correction value of the color correction data corresponding to the correction value switching point acquired by the color correction data acquisition unit 150 with the correction value of the color data of each image after the correction value switching point. And a control program for correcting the color data of each image.

  The image database 170 is a database stored in correspondence with position coordinates and orientation information of each object arranged in the virtual space.

  As shown in FIG. 3C, the color correction index database 180 is a database in which the color correction level (0, 1, 2) corresponding to the color correction path index in which the correction value switching point on the course 40 is set is stored. is there.

  In the present embodiment, the case where the color correction level is set to (0, 1, 2) and is set in three stages of “overexposure”, “underexposure”, and “intermediate exposure” will be described as an example. However, it is also possible to set color correction levels of 2 levels or less and 4 levels or more. When the number of color correction levels is increased, the correction value of the color data of the image can be finely corrected.

  In the present embodiment, “exposure” is color adjustment imitating “exposure adjustment”.

  As shown in FIG. 3D, the color correction value database 190 stores image correction data (correction values such as contrast, brightness, saturation, speed, etc.) set in advance for each color correction level (0, 1, 2). Is a stored database. Further, as the correction data, all of contrast, luminance, saturation, and speed may be set, or one of these, or a combination of two or three of them may be used. As will be described later, any color correction data can be set as long as it is an element (parameter) constituting the color space.

  Further, the correction values for contrast, brightness, saturation, and speed set in the color correction value database 190 can be set to arbitrary numerical values by the color correction data setting means 120.

  Here, a method of displaying an object in the virtual space by the control device 20 will be described with reference to FIG.

  As shown in FIG. 4, an object OBJ is arranged in a three-dimensional virtual space expressed by an absolute coordinate system (X, Y, Z), and the viewpoint coordinate system is referenced with respect to the viewpoint O (virtual camera position). Coordinate conversion is performed, and then clipping processing for removing image information outside the field of view is performed.

  In addition, in the object OBJ arranged in the three-dimensional virtual space, information on which position and orientation in the virtual space may be stored in advance in the storage device 104 or the game You may make it memorize | store in the memory | storage device 104 etc. by running a program.

  Next, the control device 20 applies interpolation processing such as light source processing to the coordinates of the object converted into the viewpoint coordinate system, and pastes texture data stored in the graphic memory to the object to provide details on the surface of the object. You may give it.

Next, the object in the projection plane 74 is expressed as a polyhedron divided into three-dimensional polygons that constitute each plane, and the coordinates (X, Y, Z) of the vertexes of the polygon in the three-dimensional virtual space are represented. Based on this, the coordinates (Xs, Ys) of the vertices of the figure drawn on the projection plane 74 are calculated according to the following equation.
Xs = (X / Z) × h (1)
Ys = (Y / Z) × h (2)
In addition, processing that preferentially displays polygons with a shallow Z coordinate, that is, polygons close to the virtual viewpoint, and finally generates a two-dimensional image IMG for display on the monitor, and generates the generated image. The IMG is output to the monitor 30.

  When displaying a game image, an image in which the coordinate position of the virtual viewpoint O (virtual camera) is controlled to move in the virtual space according to the player's operation or control information from the control device is displayed. By sequentially displaying on the monitor in units of frames (predetermined units) per second, an image (video) representing how the moving body 50 travels on the course 40 is displayed on the monitor 30. For example, when the moving body is controlled to move according to the player's operation input as in a racing game, the position of the virtual viewpoint O (virtual camera) set to be positioned in the publication of the moving body is also controlled. Therefore, the projected image changes with the movement control of the virtual viewpoint O.

  In other words, basic positional coordinates and orientation information in the virtual three-dimensional space of the object constituting the virtual three-dimensional space in a certain frame (n-th) stored in the storage device or the like are read into the graphic memory. For example, basic position coordinates and orientations of a moving object, a virtual camera (virtual viewpoint), etc. are specified by the read three-dimensional position coordinates and orientation information.

  Next, the geometry processor obtains the two-dimensional position information from the information on the three-dimensional position coordinates and the orientation of the moving body and the virtual camera (virtual viewpoint) in the frame (n−1) before the n-th frame. read out.

  Next, the geometry processor obtains a change amount indicating how much the absolute coordinate has changed in the X direction and the Z direction based on the operation information input via the handle, the accelerator pedal, or the like. At this time, the amount of change may be calculated in consideration of information on the direction of the moving object or the virtual camera (virtual viewpoint).

  When the change value in the X direction and the change value in the Z direction are obtained in this way, the two-dimensional position coordinate information in the nth frame can be obtained according to the change value.

  Next, the color correction process will be described.

  The color correction process in the present invention is performed when the two-dimensional image IMG is generated. That is, in the control device 20 according to the present embodiment, when the two-dimensional image IMG is generated by the object display processing in the three-dimensional virtual space, the correction value of the color data is appropriately corrected, for example, displayed on the monitor 30. The reality of the image can be improved by finely adjusting the brightness of the image.

  The correction value of the color data can be arbitrarily set as long as it is an element (parameter) constituting the color space. For example, RGB (red, blue, yellow), HSV (hue, saturation, lightness), HLS (hue, luminance, saturation), YUV (YCbCr, Green luminance signal (Y), Blue It is possible to set the hue and saturation (U) of the blue system determined from the difference between Yellow and the hue and saturation (V) of the red system determined from the difference between Red and Yellow.

  In the following embodiments, a state imitating “exposure” by setting parameters of contrast, brightness, saturation, and change speed on the course based on elements constituting the color space of YUV. (Example: In this embodiment, it is possible to correct the color data of the image by correcting to three levels of “overexposure”, “underexposure”, and “intermediate exposure”).

  FIG. 5 is a diagram schematically showing processing for setting a correction value switching point at an arbitrary position on the course 40. FIG. 6 is an explanatory diagram showing the state of an image that has changed to the color correction level that is set when passing through the correction value switching point, as viewed from the virtual viewpoint (virtual camera).

  As shown in FIG. 5, an arbitrary position on the path 60 set on the course 40 by the correction value switching point setting unit 130 is in the moving position and moving direction of the moving object 50 or the virtual viewpoint (virtual camera) 80. Accordingly, a correction value switching point 62 in the forward direction (advancing direction (arrow direction) in FIG. 2) and a correction value switching point 64 in the reverse direction (direction of 180 degrees with respect to the arrow direction in FIG. 2) are appropriately set. The

  When it is detected that the moving body 50 or the virtual camera (virtual viewpoint) 80 has passed through the correction value switching points 62 and 64 in the virtual space in this game, the color corresponding to the index of the correction value switching points 62 and 64 The correction level (0, 1, 2) is acquired from the color correction index database 180.

  This color correction level (0, 1, 2) is set in three levels, “overexposure”, “underexposure”, and “intermediate exposure”. For example, the moving body 50 or the virtual camera (virtual viewpoint) 80 When moving in a place where the brightness is constant, a color correction level (2) is set, and the brightness of the image 90A is changed to the color data of the image representing a state where the exposure is appropriate as shown in FIG. 6A. It becomes possible to correct.

  Also, for example, if the virtual camera (virtual viewpoint) moves from a dark place (area such as a tunnel or shade) to an area that is set as a bright place (light irradiation area with strong sunlight or lighting), the color By setting a correction level (0), as shown in FIG. 6B, the brightness of the image 90B can be corrected to color data of an image representing a bright exposure state.

  In addition, for example, when the virtual camera (virtual viewpoint) 80 moves from a bright place (light irradiation area with strong sunlight or illuminating light) to an area set as a dark place (tunnel area), the color correction level By setting (1), it is possible to correct the brightness of the image 90C to the color data of the image representing the dark exposure state as shown in FIG. 6C.

  In addition, for example, when the area is reached, the image is not only corrected to an image suitable for the area, but the virtual camera (virtual viewpoint) 80 is set to a dark place (eg, “shade” in the virtual space). The exposure state is brightened or the exposure state is further darkened based on the value of each parameter set in the color correction level set in FIG. 3D. Is possible.

  FIG. 7 is a diagram schematically illustrating the positional relationship between the virtual camera (virtual viewpoint) and the moving object that has passed the correction value switching point.

  As shown in FIG. 7, the case where the correction value switching point 62 (points P0, P1, P2) is set at an arbitrary position of the path 60 formed along the course 40 will be described. When the virtual camera (viewpoint) 80 passes through the area between the points P0 and P1, the correction value of the color data is corrected by the color correction level set at the point P0. Similarly, when the virtual camera (virtual viewpoint) 80 passes through the area between the points P1 and P2, the value of the color data of the image is corrected by the color correction level set at the point P1.

  Note that one of a plurality of reference points may be selected based on the above-described two-dimensional position information of the moving object or virtual viewpoint (virtual camera) and the two-dimensional position information of the correction value switching point on the course. For example, the correction value switching point at the closest distance may be selected from the two-dimensional position information of the correction value switching point.

  In addition, as described above, the basic position coordinates and orientation of the moving object or virtual camera (virtual viewpoint) 80 are stored in advance in the storage device and the information on the three-dimensional position coordinates and orientation read into the graphic memory. It is specified by 3D position coordinates and orientation information.

  The moving direction of the moving body 50 or the virtual camera (virtual viewpoint) is set in advance in the traveling direction of the course 40 (eg, the arrow direction in FIG. 2). When it is determined that the moving body 50 has changed the moving direction by a predetermined angle (eg, 180 degrees) with respect to the traveling direction in the course 40 according to the player's operation, the moving body 50 or the virtual camera (virtual viewpoint) ) 80 travels on the course 40 in the reverse direction.

  Further, when it is determined that the traveling direction of the moving body 50 has changed direction by a predetermined angle or more, the direction of the following virtual camera (virtual viewpoint) 80 is also switched in the reverse direction. Further, when the traveling direction of the moving body 50 is reversed again and is directed to the forward direction, the direction of the virtual camera 80 is also switched to the forward direction at that time.

  The correction value switching points 62 and 64 can also display, for example, white triangle (forward direction) and black triangle (reverse direction) markers in the image. By displaying in this way, whether or not the virtual camera (virtual viewpoint) 80 has passed through the correction value switching points 62 and 64 can also be visually determined from the image.

  Therefore, the correction value switching point setting unit 130 can confirm the setting position of the correction value switching point on the course 40. That is, when a correction value switching point is designated, a color correction data setting screen as shown in FIG. 3D is displayed, and the color correction data at the point can be changed for each color correction level.

  When the moving body 50 passes the correction value switching point P1 (the nearest point), the color correction level set at the previous correction value switching point P0 is acquired from the color correction index database 180. It may be set. By doing this, the timing for switching the brightness of the image is slightly delayed, and this delay is the same as when a negative afterimage or a positive afterimage occurs after being delayed by a response in human vision or stimulated by light. It is also possible to display as a change in brightness.

  A procedure of color data correction processing executed by the control device 20 including the CPU 101 will be described with reference to the flowchart of FIG.

  In S <b> 11 of FIG. 8, the control device 20 determines the direction of the virtual camera 80 on the path 60 (whether forward or reverse) from the direction of the virtual camera 80 (forward or reverse) and the path 60 of the course 40. Ask for.

  In next S 12, the control device 20 selects correction value switching points 62 and 64 to be used from the direction (forward direction, reverse direction) of the virtual camera 80 on the path 60. Subsequently, the process proceeds to S 13, and when the selected correction value switching points 62 and 64 are passed, the nearest correction value switching point is obtained from the virtual camera 80.

  In next S <b> 14, the control device 20 checks whether or not the virtual camera 80 has passed the nearest correction value switching point among the correction value switching points 62 and 64. In S14, when the nearest point is in the position where the virtual camera 80 has passed (in the case of YES), the process proceeds to S15, and the nearest point is set as the correction value switching point P. If it is determined in S14 that the virtual camera 80 is not passing the nearest point (if NO), the process proceeds to S16, and the correction point is switched to the point immediately before the nearest point. Let it be point P.

  Whether or not it is the nearest correction value switching point is calculated by calculating the two-dimensional position coordinate information of the virtual camera (virtual viewpoint) 80 and the two-dimensional position coordinate information of the correction value switching point. You may judge that there is.

  In S17, the color correction level of the point P is read from the color correction index database 180. Subsequently, the process proceeds to S18, and the color correction data (contrast, brightness, saturation, speed correction values) set for each color correction level (0, 1, 2) acquired in S17 is acquired from the color correction value database 190. To do.

In the next S19, the acquired correction data (contrast, brightness, saturation, speed correction values) and the correction value of the color data set at the point where the moving body 50 is currently traveling are acquired. Color correction data is created by combining with speed. In the synthesis process, for example, correction data is created based on the following arithmetic expression (3).
(Synthesized correction data) = (acquired correction data) × (speed) + (current correction data) × (1−speed) (3)
In S20, the color data stored in the frame buffer (graphic memory) is changed according to the synthesized color correction data, and the color of the image displayed on the monitor 30 is corrected as shown in FIGS. 6A to 6C.

  As described above, in order to correct the color of the image displayed on the monitor 30, the color correction level of the passing point is read from the color correction index database 180, and each color correction level (0, 1, 2) is read from the color correction value database 190. It is possible to reduce the burden on the control device 20 by reading the brightness correction data (contrast, brightness, saturation, and speed correction values) set in, and appropriately correct the color at an arbitrary position. It becomes possible to set easily.

  In the image processing method of the game device, the control means (CPU 101) of the game device obtains the orientation of the virtual camera 80 in the course 40 from the position coordinates of the virtual camera 80 and the position coordinates of the path 60 (S11). The step of selecting the correction value switching points 62 and 64 from the orientation of the virtual camera 80 (S12), the position coordinates of the virtual camera 80 and the position coordinates of the correction value switching points 62 and 64 are compared, and the correction value switching points are compared. A step of determining the nearest correction value switching point from 62 and 64 (S13), a step of obtaining the corresponding color correction data from the nearest correction value switching point (S18), and the color correction data are combined with the image. Control is performed to execute step (S19) and step (S20) of outputting the combined image to the display device.

  The step of determining the nearest correction value switching point (S13) compares the position coordinates of the correction value switching points 62 and 64 with the position coordinates of the virtual camera 80 in the control means (CPU 101) of the game apparatus. A step of determining whether or not the virtual camera 80 has passed the correction value switching points 62 and 64 (S14), and when determining that the virtual camera 80 has passed the correction value switching points 62 and 64, the correction value switching point that has passed is corrected to the nearest. Control is performed to further execute the step (S15) of setting the value switching point.

  The color correction data stored in the storage means includes luminance information, contrast information, saturation information, and change speed information, and the step (S19) of synthesizing the color correction data with the image includes control means ( The CPU 101) is controlled to correct the color of the image based on each information.

  FIG. 9 is a diagram illustrating a case where the moving body 50 meanders the course 40.

  As shown in FIG. 9, when the moving body 50 or the virtual camera (virtual viewpoint) 80 does not run on the path 60 of the course 40 and meanders the course 40, some of the points of the path 60 You will pass over the point. When one path 60 is set in the course 40, the color correction data of the nearest correction value switching points 62 and 64 is acquired from the point when the virtual camera (virtual viewpoint) 80 intersects the path 60. A control program may be created so that the color correction level of the point can be read from the color correction index database 180.

  Further, when one path 60 is set on the course 40, it is conceivable that the virtual camera (virtual viewpoint) 80 travels at a position outside the path 60. In that case, the moving body 50 sets a virtual line L orthogonal to each of the correction value switching points 62 and 64. A control program may be created so as to acquire correction data of the nearest correction value switching points 62 and 64 when the moving body 50 or the virtual camera (virtual viewpoint) 80 passes through the set virtual line L. .

  That is, it is not always necessary for the virtual camera (virtual viewpoint) 80 to pass through the correction value switching points 62 and 64, and it is determined that the virtual camera (virtual viewpoint) has passed through the correction value switching points 62 and 64 depending on the distance from the start point. It is also possible to read the color correction level corresponding to the point from the color correction index database.

  FIG. 10 is a diagram illustrating a case where a plurality of paths 60 are set on the course 40.

  As shown in FIG. 10, a plurality of paths 60 a to 60 e having a predetermined interval in the lateral width direction are set in the course 40. When a plurality of paths 60a to 60e are set in this way, the correction value switching points 62 and 64 can be set at arbitrary positions in the plurality of paths 60a to 60e. Different color correction data can be set appropriately depending on the side, the vicinity of the center, and the out side.

  Thereby, for example, a situation where a shade due to a building or a mountain around the course 40 is partially generated in a part of the course 40, or a part where the sun is hidden in a cloud and a part irradiated with sunlight are mixed. It is possible to assume such a situation.

  As described above, the control device 20 acquires information such as the moving position of the moving body 50 that moves according to the player's operation during the execution of the game program, and sequentially displays each image as, for example, a 1/60 second frame. As a result, an image (video) representing how the moving body 50 travels on the course 40 can be displayed on the monitor 30, and a virtual camera (virtual viewpoint) that moves integrally with the moving body 50 follows the course 40. When the correction value switching point of the pass 60 formed in this way is passed, the color correction level corresponding to the color correction path index set for the passed correction value switching point is acquired from the color correction index database 180, and the course is further included in the course. Correction of color correction data corresponding to the color correction level acquired in the correction value of the color data of the correction value switching point of the path formed along By combining the values, for example, the brightness becomes possible to display the corrected image on the monitor 30.

  Therefore, for example, the image can be finely adjusted to an image suitable for the environment of the travel position (a bright place with sunlight, a dark place such as a tunnel), and an image with higher reality can be displayed.

  It should be noted that correction values such as contrast, brightness, saturation, speed, etc. can be set arbitrarily, and it is possible to have a color change of the image that the game designer intends to have an effect during game execution. In addition to adjusting to an image suitable for the environment of the running position, the player can experience more dramatic effects.

  For example, even when the hue, saturation, and contrast, which are elements constituting the YUV in the present embodiment, are set as correction values, the generated two-dimensional image is generated in a place where red lights are arranged in the virtual space. It is also possible to correct the image to a reddish image and produce an effect that is illuminated by red light. In addition, in a place surrounded by a blue wall in the virtual space, it is possible to correct the generated two-dimensional image to a further bluish image. As a result, the present invention can display an image with higher performance as a method for producing color reflection to the viewpoint in the virtual space.

  In the above embodiment, a car racing game has been described. However, the present invention is not limited to this, and for example, a player can play a specific course formed in a virtual space such as a ski racing game, a snowboard racing game, a boat racing game, or a motorcycle racing game. Needless to say, the present invention can be applied to any game in which a moving body whose movement is controlled by an operation input or a computer control runs.

It is a perspective view which shows one Example of the game device by this invention. It is a top view which shows typically the course which performs a race. It is a block diagram which shows an example of a structure of a game device. It is a figure which shows typically each control program and database stored in the memory | storage device 104. FIG. It is a figure which shows the color correction index database 180 typically. It is a figure which shows the color correction value database 190 typically. It is a figure for demonstrating the object display method of three-dimensional virtual space. FIG. 6 is a diagram schematically showing a process of setting a correction value switching point at an arbitrary position on a course 40. It is a figure which shows the example of a display of the image correct | amended to the exposure middle. It is a figure which shows the example of a display of the image correct | amended to overexposure. It is a figure which shows the example of a display of the image correct | amended by exposure under. It is a figure which shows typically the positional relationship of the virtual camera (viewpoint) which moves following a moving body, and the moving body which passed the correction value switching point. It is a flowchart which shows the process sequence of the color data correction process which the control apparatus 20 containing CPU101 performs. It is a figure which illustrates the case where the mobile body 50 meanders the course 40. FIG. It is a figure which illustrates the case where a plurality of paths 60 are set on course 40.

Explanation of symbols

10 game device 20 control device 30 monitor 40 course 50 moving body 60 path 70, 74 projection plane 80 virtual camera 101 CPU
102 Geometry processor 103 System memory 104 Storage device 105 Boot ROM
106 peripheral interface 107 bus arbiter 108 rendering processor 109 graphic memory 120 color correction data setting unit 130 correction value switching point setting unit 140 correction value switching determination unit 150 color correction data acquisition unit 160 color data correction unit 170 image database 180 color correction index database 190 Color correction value database

Claims (9)

In a game device that calculates a movement position and a movement direction of a moving body that moves along a course in a virtual space in accordance with a player's operation, and generates an image at the movement position viewed from the virtual camera.
Color correction data setting means for setting color correction data for correcting color data of an image according to the moving position and moving direction of the moving body;
Correction value switching point setting means for setting a predetermined position on the course as a correction value switching point;
Correction value switching determination means for determining that the moving body has passed the correction value switching point;
Color correction data acquisition means for acquiring color correction data at the correction value switching point when the correction value switching determination means determines that the mobile body has passed the correction value switching point;
Color data correction means for correcting the color data of the image by combining the correction value of the color correction data corresponding to the correction value switching point acquired by the color correction data acquisition means with the color data of the image;
A game apparatus comprising: The game device according to claim 1,
The color correction data setting means includes
Set the color correction data to the path disposed in the course, and a game apparatus moving direction of the moving body and sets the different color correction data in accordance with the forward or backward direction of the course. The game device according to claim 1,
The color correction data is composed of brightness, contrast, saturation, change speed,
The game apparatus according to claim 1, wherein the color data correction unit corrects the color data of the image based on at least one parameter of luminance, contrast, saturation, and change speed. In an image processing method of a game device that calculates a movement position and a movement direction of a moving body that moves along a course in a virtual space according to a player's operation, and generates an image of the movement position viewed from the virtual camera.
The control means of the game device
A procedure for setting color correction data for correcting the value of color data of the image according to the moving position and moving direction of the moving body;
A procedure for setting a predetermined position on the course as a correction value switching point;
A procedure for determining that the moving body has passed the correction value switching point;
When it is determined that the mobile body has passed the correction value switching point, a procedure for obtaining color correction data at the correction value switching point;
A procedure for correcting the color data of the image by combining the correction value of the color correction data corresponding to the acquired correction value switching point with the color data of the image;
The image processing method of the game device controlled to execute. Image processing for calculating a moving position and a moving direction of a moving body that moves along a course set in the virtual space based on the input operation information, and generating an image viewed from the virtual camera corresponding to the moving position In the program
On the computer,
A procedure for setting color correction data for correcting color data of an image according to the moving position and moving direction of the moving body;
A procedure for setting a predetermined position on the course as a correction value switching point;
A procedure for determining that the moving body has passed the correction value switching point;
When it is determined that the mobile body has passed the correction value switching point, a procedure for obtaining color correction data at the correction value switching point;
A procedure for correcting the color data of the image by combining the correction value of the color correction data corresponding to the acquired correction value switching point with the color data of the image;
An image processing program for executing.   A storage medium storing the image processing program according to claim 5. A game device that calculates a moving position and a moving direction of a moving body that moves along a course in which a path is arranged in a virtual space according to a player's operation, and generates an image at the moving position viewed from the virtual camera Image processing method,
The storage means of the game device
Color correction data for correcting color data of an image according to the moving position and moving direction of the moving body, and correction value switching in which correction value switching points corresponding to the color correction data set in the path are set Remember point information,
The control means of the game device
Obtaining the orientation of the virtual camera in the course from the position coordinates of the virtual camera and the position coordinates of the path;
Selecting the correction value switching point set in the correction value switching point information from the orientation of the virtual camera;
Comparing the position coordinates of the virtual camera and the position coordinates of the correction value switching point, and determining the nearest correction value switching point from the correction value switching point;
Obtaining corresponding color correction data from the nearest correction value switching point;
Combining the color correction data with the image;
Outputting the synthesized image to a display device;
The image processing method of the game apparatus characterized by and Turkey to perform. The image processing method of the game device according to claim 7,
In the step of determining the nearest correction value switching point,
The control means of the game device comprises:
Comparing the position coordinates of the correction value switching point with the position coordinates of the virtual camera and determining whether the virtual camera has passed the correction value switching point;
When it is determined that the correction value switching point has passed, the step of setting the passed correction value switching point as the nearest correction value switching point;
The image processing method of the game device according to claim further run to Rukoto the. The color correction data stored in the storage means is
It consists of brightness information, contrast information, saturation information, and change speed information.
In the step of combining the color correction data with the image,
The control means of the game device
Based on each of the information, the image processing method of the game apparatus according to claim 7 or claim 8, wherein Rukoto to correct complement the color of the image.