JP4365303B2 - Recording medium storing image processing program - Google Patents

Description

  The present invention relates to an image processing system and a data transfer medium storing an image processing program, and more particularly, to an image processing system for games and simulations, and a data transfer medium storing an image processing program.

  In the conventional three-dimensional display processing, a solid to be expressed is modeled, the modeling data is rendered, a two-dimensional image is generated and stored in the frame buffer, and the data read from the frame buffer is displayed. The three-dimensional modeling data includes shape data representing the shape of the three-dimensional object and texture data. The shape data is, for example, polygon data that represents a solid as an aggregate of many polygons. The texture data is data representing the pattern and material of each surface of the solid, for example, color data. Rendering is a process for obtaining a final image based on modeling data, and is, for example, a shading method.

  Conventional three-dimensional display processing is described in Patent Documents 1 and 2.

  Patent Document 1 describes an image processing method for displaying a background object with a sense of depth. In this method, a background object represented by an aggregate of a plurality of polygons is photographed by a virtual camera in six directions, up, down, left, and right, and three-dimensional coordinate data and texture of the background object in the three-dimensional space that are displayed when the image is photographed. Based on the texture data obtained by mapping, color data and depth data for each dot on the screen are calculated. Also, it calculates the color data and depth data of the moving object, compares the depth values of the moving object and the background object for each dot, and writes the image data value of the moving object to the frame buffer when the moving object is in front. When the background object is in front, the image data value of the background object is written in the frame buffer.

Patent Document 2 describes an image processing method for displaying a background image with a sense of depth. In this method, prior to the processing in the second image processing apparatus that displays the background image and the moving object, the polygon data of the background image is rendered in the first image processing apparatus, and the image data on the screen of the background image is displayed. And the depth value corresponding to each dot on the screen, and the image data and the depth value are stored in the recording medium. In the second image processing apparatus, the image data and depth value of the background image are read from the recording medium, the polygon data of the moving object is rendered to calculate the image data and depth value of the moving object, and the background image and the depth of the moving object are calculated. The values are compared, and the image data value of the image or object in the foreground is written into the frame buffer.
Japanese Patent Laid-Open No. 10-154240 (FIG. 10-18) Japanese Unexamined Patent Publication No. 2000-11204 (FIG. 2-12)

  In the method described in Patent Document 1, it is necessary to render a moving object after rendering a background image with the same image processing apparatus, and high processing capability is required for the processor, and the modeling data of the background image and the moving object is required. In addition, a large capacity is required for a memory for storing rendering data. In addition, it is necessary to calculate the depth value of all dots of the image data on the screen of the background object, which requires a high processing capacity for the processor and a large capacity for the buffer memory for storing the depth data. is there.

  In addition, since the background image is scrolled by shifting and displaying the portion of the background image taken with a predetermined angle of view from one viewpoint of the virtual camera, the background image is scrolled so as to rotate, The image cannot be scrolled to advance in parallel.

  In this method, since image data obtained by rendering polygon data is used as a background image as it is, it is necessary to use an enormous number of polygons in order to accurately represent the background image. Also, it is difficult to render a subtle shade such as a watercolor painting or brush touch with a background image by a method of rendering a polygon.

  Even in the method described in Patent Document 2, it is necessary to calculate the depth value of all the dots of the image data on the screen of the background object, and the processor is required to have high processing capability, and the buffer memory for storing the depth data In addition, a large capacity is required.

  Also in this method, as in the method of Patent Document 1, it is necessary to use an enormous number of polygons in order to express a background image precisely, and it is difficult to express subtle shades such as ink paintings in the background image. .

  An object of the present invention is to reduce the processing capability required of a processor in image processing and to give a still image including a background image a sense of depth.

  Further, the present invention is to scroll the background image so that the background image advances in parallel in the image processing.

  Another object of the present invention is to make it possible to generate a precise background image in image processing.

An image processing system according to a first aspect of the present invention includes a first rendering unit, an output unit, a receiving unit, a second rendering unit, and an image generating unit. The first rendering means renders the three-dimensional modeling data of the stationary object from the viewpoint of an ortho camera moving on a predetermined plane, and generates rendering data of the stationary object. Output means, and the rendering data of the still object, and a three-dimensional modeling data of the moving object, and outputs to the transmission medium. Receiving means, wherein the transmission medium, receives the three-dimensional modeling data of the moving object and rendering data of the stationary object. Second rendering means, three-dimensional modeling data of the moving object, and renders the perspective of Ortho camera moving on the predetermined plane in accordance with movement of the moving object, and generates rendering data of the moving object. The image generation unit generates a two-dimensional image by combining the rendering data of the stationary object received by the reception unit and the rendering data of the moving object generated by the second rendering unit.

According to the above invention, a three-dimensional model of a stationary object is rendered in advance and is output to a transmission medium together with the three-dimensional model of a moving object. This eliminates the need to render a stationary object on the reading side from the transmission medium , and reduces the amount of processing on the reading side. In addition, since both rendering of stationary objects and rendering of moving objects are performed from the viewpoint of an ortho camera moving on a predetermined plane, even if only the moving object is rendered in real time on the reading side, the stationary object is rendered in real time A natural rendering image similar to the above is obtained. Furthermore, in order to perform in representing the image moving object moves relative to the stationary object, rendering both rendering the moving object stationary object from the perspective of Ortho camera moving on a predetermined plane in accordance with movement of the moving object, Even if only the moving object is rendered in real time on the reading side, a natural rendering image can be obtained as in the case where both the stationary object and the moving object are rendered on the reading side. Furthermore, since a stationary object is rendered by an ortho camera that moves on a predetermined plane, when rendering data of a stationary object is scrolled on the screen, the stationary object can be scrolled so as to advance in parallel on the screen.

The recording medium according to the second invention includes a data area and a program area.

The data area stores rendering data obtained by rendering 3D modeling data of a stationary object from the viewpoint of an ortho camera that moves on a predetermined plane, and 3D modeling data of a moving object.

The program area stores an image processing program that causes the computer to function as a reading unit, a second rendering unit, and an image generating unit. Reading means reads rendering data of the stationary object and three-dimensional modeling data of the moving object from the data area. Second rendering means, three-dimensional modeling data of the moving object, and renders the perspective of Ortho camera moving on the predetermined plane in accordance with movement of the moving object, and generates rendering data of the moving object. The image generation unit generates a two-dimensional image by combining the rendering data of the stationary object read by the reading unit and the rendering data of the moving object generated by the second rendering unit.

According to the invention, had been previously rendering the three-dimensional model of the stationary object, by storing in a recording medium together with the three-dimensional model of the moving object, is necessary to rendering a still object on the side of reading the recording medium The amount of processing on the reading side is reduced. In addition, since both rendering of stationary objects and rendering of moving objects are performed from the viewpoint of an ortho camera moving on a predetermined plane, even if only the moving object is rendered in real time on the reading side, the stationary object is rendered in real time A natural rendering image can be obtained in the same manner as. Furthermore, in order to perform in representing the image moving object moves relative to the stationary object, rendering both rendering the moving object stationary object from the perspective of Ortho camera moving on a predetermined plane in accordance with movement of the moving object, Even if only the moving object is rendered in real time on the reading side, a natural rendering image can be obtained as in the case where both the stationary object and the moving object are rendered on the reading side. Furthermore, since the still object is rendered by the ortho camera moving on a predetermined plane , when the still rendering data is scrolled on the screen, the still object can be scrolled so as to advance in parallel.

An image processing system according to a third aspect of the invention includes first rendering means, output means, receiving means, second rendering means, and image generation means. The first rendering means renders the three-dimensional modeling data of the stationary object from the viewpoint of the ortho camera moving on a predetermined plane, and generates rendering data including the first image data and depth data. Output means, a second image data generated based on the first image data, and outputs the rendering data of the still objects including said depth data, to the transmission medium together with the three-dimensional modeling data of the moving object. Receiving means, wherein the transmission medium, receives the three-dimensional modeling data of the moving object and rendering data of the stationary object. Second rendering means, three-dimensional modeling data of the moving object, and renders the perspective of Ortho camera moving on the predetermined plane in accordance with movement of the moving object, and generates rendering data of the moving object. The image generation unit generates a two-dimensional image by combining the rendering data of the stationary object received by the reception unit and the rendering data of the moving object generated by the second rendering unit.

According to the above invention, when rendering a static object, more detailed image data can be generated based on the first image data (temporary image data) obtained by rendering the three-dimensional modeling data. A more detailed two-dimensional image can be generated than the image data normally obtained by rendering from the dimensional modeling data. In addition, since the image data of the still object is separately generated, it is not necessary to generate the texture data when modeling the still object, and the modeling work is simple. Furthermore, by rendering the three-dimensional modeling data despite allowing generation of the image data from the detailed two-dimensional images obtained usually on the side of receiving from the amount and the transmission medium of the data transmitting medium crab Output The throughput is almost unchanged.

A recording medium according to the fourth invention includes a data area and a program area.

In the data area, the rendering data including the first image data and the depth data is generated by rendering the three-dimensional modeling data of the stationary object from the viewpoint of the ortho camera moving on a predetermined plane, and the first image data The data in which the rendering data of the stationary object including the second image data generated based on the above and the depth data is written together with the three-dimensional modeling data of the moving object is stored.
The program area stores an image processing program that causes the computer to function as a reading unit, a second rendering unit, and an image generating unit. Reading means reads rendering data of the stationary object and three-dimensional modeling data of the moving object from the data area. Second rendering means, three-dimensional modeling data of the moving object, and renders the perspective of Ortho camera moving on the predetermined plane in accordance with movement of the moving object, and generates rendering data of the moving object. The image generation unit generates a two-dimensional image by combining the rendering data of the stationary object read by the reading unit and the rendering data of the moving object generated by the second rendering unit.

According to the above invention, when rendering a static object, more detailed image data can be generated based on the first image data (temporary image data) obtained by rendering the three-dimensional modeling data. A more detailed two-dimensional image can be generated than the image data normally obtained by rendering from the dimensional modeling data. In addition, since the image data of the still object is separately generated, it is not necessary to generate the texture data when modeling the still object, and the modeling work is simple. Furthermore, although it is possible to generate a more detailed two-dimensional image than the image data normally obtained by rendering from three-dimensional modeling data, the amount of data written to the recording medium and the processing amount on the side of reading from the recording medium are Almost unchanged.

An image processing system according to a fifth aspect of the invention comprises first rendering means, image data generating means, depth data generating means, output means, receiving means, second rendering means, and image generating means. . The first rendering means renders the three-dimensional modeling data of each of the first stationary object and the second stationary object from the viewpoint of an ortho camera moving on a predetermined plane, and image data is rendered to the first stationary object. For the second still object, rendering data including image data and depth data is generated. Image data generating means synthesizes the image data with the image data of the first stationary object the second stationary object, generates image data of a still object. The depth data generation means generates depth data of the stationary object using the depth data of the second stationary object. The output means outputs the rendering data of the still object including the image data and the depth data of the stationary object, the transmission medium together with the three-dimensional modeling data of the moving object. Receiving means, wherein the transmission medium, receives the three-dimensional modeling data of the moving object and rendering data of the stationary object. Second rendering means, three-dimensional modeling data of the moving object, and renders the perspective of Ortho camera moving on the predetermined plane in accordance with movement of the moving object, and generates rendering data of the moving object. The image generation unit compares the depth data of the stationary object generated by the depth data generation unit with the depth data of the moving object generated by the second rendering unit, and uses the comparison result to compare the reception data. The still object rendering data received by the means and the moving object rendering data generated by the second rendering means are combined to generate a two-dimensional image.

According to the invention, by dividing the stationary object in the first and second stationary object, the depth data of the first still object can be omitted, it is possible to reduce the amount of data to be output to the transmission medium. The first stationary object occupying most of the stationary objects using the coarse polygon elements (first number of polygons), the second occupies a relatively small area still objects only the fine polygon elements (second greater than the first number Modeling), the modeling burden can be suppressed. In addition, the second stationary object can be modeled more finely, and a more detailed image can be obtained than an image normally obtained by three-dimensional modeling of the stationary object.

A recording medium according to a sixth aspect includes a data area and a program area.

In the data area, the three-dimensional modeling data of each of the first still object and the second still object is rendered from the viewpoint of an ortho camera moving on a predetermined plane, and the first still object includes image data. For the second still object, rendering data including rendering data including image data and depth data is generated by the first rendering means, and the image data of the first still object and the image of the second still object are rendered. the data to generate image data of the synthesized stationary object by the image data generating unit, by using the depth data of the second stationary object, the depth data of a still object generated by the depth data generating means of the stationary object Image data Rendering data of the still objects including said depth data, written together with three-dimensional modeling data of the moving object data is stored.

The program area stores an image processing program that causes the computer to function as reading means, second rendering means, and image processing means. Reading means reads rendering data of the stationary object and three-dimensional modeling data of the moving object from the data area. Second rendering means, three-dimensional modeling data of the moving object, and renders the perspective of Ortho camera moving on the predetermined plane in accordance with movement of the moving object, and generates rendering data of the moving object. The image processing means compares the depth data of the stationary object with the depth data of the moving object generated by the second rendering means, and uses the comparison result to compare the stationary object read by the reading means. The rendering data and the rendering data of the moving object generated by the second rendering unit are combined to generate a two-dimensional image.

According to the invention, by dividing the stationary object in the first and second stationary object, the depth data of the first still objects can reduce the amount of data to be written to the omission can, recording medium. The first stationary object occupying most of the stationary objects using the coarse polygon elements (first number of polygons), the second occupies a relatively small area still objects only the fine polygon elements (second greater than the first number Modeling), the modeling burden can be suppressed. In addition, the second stationary object can be modeled more finely, and a more detailed image can be obtained than an image normally obtained by three-dimensional modeling of the stationary object.

Recording medium according to the seventh invention, in the recording medium according to the sixth invention, the image data of the still objects stored in said data area, the first produced by the first rendering means stationary object and / or rendering data of the second stationary object is the image data that has been replaced with the image data generated based on the image data of the first stationary object and / or the second stationary object.

  According to the said invention, in addition to the effect of 6th invention, the effect of 4th invention can be acquired.

The data transfer medium according to an eighth aspect of the present invention is the data transfer medium according to the sixth aspect of the present invention, wherein the first rendering means is configured to: (a) from the three-dimensional modeling data of each of the first stationary object and the second stationary object, Means for calculating a color value and a depth value viewed from the viewpoint of the ortho camera for each of a plurality of dots constituting the two-dimensional screen; and (b) a plurality of calculated values for the first still object. Means for generating rendering data having image data including color values and rendering data having image data including a plurality of calculated color values and depth data including a plurality of depth values for the second still object Including. The image data generating means may: (a) for each dot of the plurality of dots, for the dot having both color values for the first still object and the image data of the second still object; write the color values of the image data of a still object in memory, the first or the first recording means for writing the color value in the memory for the dots having color values only in the second stationary object one of the image data And (b) means for outputting the data recorded in the memory as the image data after completion of the processing by the first recording means. Further, the depth data generation means writes (a) the depth value of the depth data of the second still object to the memory for each of the plurality of dots, and sets the color value of the image data of the second still object. A second recording unit that writes a predetermined value to the memory for dots other than the dot that has, and (b) after completion of processing by the second recording unit, the data stored in the memory is output as the depth data Means.

According to the above invention, the depth value is written to the recording medium only for the dot having the color value of the image data of the second still object, and the predetermined value is written to the other dots, so that the depth data is efficiently compressed. Is possible.

Recording medium according to a ninth aspect of the invention, there is provided a recording medium according to the sixth invention, the image processing program further comprises determining means for determining the position and direction of the moving object in the virtual two-dimensional screen. In addition, the first rendering means may: (a) from the three-dimensional modeling data of each of the first moving object and the second moving object, for each of a plurality of dots constituting a virtual two-dimensional screen, the viewpoint of the ortho camera means for calculating the color value and depth value seen in the rendering data having an image data including a plurality of color values the arithmetic for (b) the first moving object, the second moving object And generating means for generating rendering data having image data including a plurality of calculated color values and depth data including a plurality of depth values. The second rendering means, (a) from the three-dimensional modeling data of the moving object, each dot of the plurality of dots constituting a two-dimensional screen virtual position and the moving object is determined by said determining means Means for calculating a color value and a depth value as viewed from the viewpoint of the ortho camera with displacement in a direction; and (b) image data including the calculated plurality of color values and depth data including a plurality of depth values. Means for generating rendering data. In addition, the image generation means (a) compares the depth values of the stationary object and the moving object for each of the plurality of dots, and determines which is the front, (b) the stationary object and For a dot having both color values in the image data of the moving object, the color value of the image data of the near object determined by the depth comparison means is written in the memory , and either the stationary object or the moving object For a dot having a color value only in the image data of one object, a third recording unit that writes the color value to the memory ; and (c) a process by the depth comparison unit and the third recording unit includes the plurality of processes. out after the completion for all dots, the data recorded in the memory as image To and means.

According to the above invention, rendering is performed in real time according to the position and direction of the moving object corresponding to the operation input from the controller, while the stationary object does not need to be rendered, so that the amount of calculation can be reduced.

Recording medium according to a tenth invention, in the recording medium according to the sixth invention, the image processing program further comprises determining means for determining the position and direction of the moving object in the virtual two-dimensional screen. The first rendering means may: (a) color viewed from the viewpoint of the ortho camera for each dot constituting the virtual two-dimensional screen from the three-dimensional modeling data of the first stationary object and the second stationary object. means for calculating a value and depth value, rendering data having an image data including a plurality of color values the arithmetic for (b) the first stationary object, wherein the relative said second stationary object Generating rendering data having image data including a plurality of calculated color values and depth data including a plurality of depth values. The second rendering means, (a) the three-dimensional modeling data of the moving object, each dot of the plurality of dots constituting a two-dimensional screen virtual, position the moving object is determined by said determining means And a means for calculating a color value and a depth value viewed in the viewpoint of the ortho camera by being displaced in a direction, and (b) image data including the calculated plurality of color values and depth data including a plurality of depth values. Generating rendering data. Further, the image generating unit, (a) said means for recording the frame buffer image data of a still object, with respect to a dot with Image data color values (b) the moving object, the stationary object and the Comparing means for comparing depth values of moving objects and deciding which one is in front; (c) If the comparing means determines that the moving object is in front of the stationary object, the moving object corresponding to the dot Means for storing color values of image data in the frame buffer.

According to the above invention, since the still object is written in the frame buffer and the moving object is overwritten, the amount of calculation and the number of times of writing can be reduced.

  According to the present invention, in image processing, it is possible to reduce the processing capability required of a processor and give a still object a sense of depth.

  Further, according to the present invention, in the image processing, the background image can be scrolled so that the stationary object advances in parallel.

  In addition, according to the present invention, it is possible to generate a precise still object in image processing.

(1) Overall Configuration FIG. 1 is an external view of a game machine 1 applied to an image processing system according to an embodiment of the present invention.

  Here, the game machine 1 will be described by taking a game machine as shown in FIGS. 1A and 1B as an example. The game machine 1 in FIG. 1A includes an LCD 2 and a controller 3 arranged on the front surface of the housing. The LCD 2 displays a game screen by a game program process to be described later. The controller 3 includes a cross key 3a and an input key 3b. The cross key 3a is mainly used to move an image on the game screen. The input key 3b is used, for example, when determining the selection of an image on the game screen or for instructing the action of the character. The game machine 1 of FIG. 1B has a foldable case. When the game machine 1 is opened, the LCDs 2a and 2b are respectively attached to two portions of the case defined by the foldable portion as shown in the figure. I have.

  FIG. 2 is a block diagram showing a hardware configuration example of the game machine 1 shown in FIGS.

  The game machine 1 includes a CPU 21, an image processing unit 22, a memory 23, a communication unit 24, a controller interface (I / F) unit 25, an external memory interface (I / F) unit 26, and an LCD driver. 27.

  The game machine body 1 further includes a bus 28. The bus 28 includes a CPU 21, an image processing unit 22, a memory 23, a communication unit 24, a controller I / F unit 25, an external memory I / F unit 26, and the like. Then, data transfer with the LCD driver 27 is performed.

  The CPU 21 transmits control signals to the image processing unit 22, the memory 23, the communication unit 24, the controller I / F unit 25, the external memory I / F unit 26, and the LCD driver 27 via the bus 28, and receives data from these configurations. These are controlled by receiving.

  The image processing unit 22 performs image data generation processing in accordance with a control signal from the CPU 21. The image processing unit 22 determines the position of the object in the three-dimensional virtual space and renders the object based on the three-dimensional modeling data, so that the two-dimensional image to be displayed on the LCD 2 from the three-dimensional modeling data. Is generated.

  The memory 23 is a volatile memory and / or a nonvolatile memory, and temporarily stores an image to be displayed on the LCD 2 and an image in the middle of generating the image. The memory 23 includes, for example, a first frame buffer area that stores image data of a still object, which will be described later, in units of frames, a first depth buffer area that stores depth data of a depth object, which will be described later, and an image of a moving object, which will be described later. A second frame buffer area for storing data in units of frames, a second depth buffer area for storing depth data of a moving object described later, read from the external memory 5 via the external memory I / F 26 or via the communication unit 24 A program area for storing the game program read from the transmission medium.

  The communication unit 24 is configured to communicate with an external communication device using a wired and / or wireless transmission medium. The external communication device is a communication unit or the like mounted on a server in which a game program to be described later is stored. The transmission medium is a LAN line, a public telephone line, the Internet or the like in the case of a wired connection, and is a wireless LAN line, a cellular phone line, a PHS line or the like in the case of a wireless connection. The controller I / F 25 is connected to the controller 3 and transfers an input from the controller 3 to the CPU 21. The external memory I / F 26 reads the content stored in the external memory 5 based on a control signal from the CPU 21 when an external memory configured in the form of a cartridge or the like is attached to the game machine 1, and the external memory 5 The data read from is transferred to the CPU 21. The LCD driver 27 drives the LCD 2 based on the image data written in the frame buffer of the memory 23 and outputs the image data in the frame buffer to the LCD 2.

  The present invention is more effective when applied to the game machine 1 in which the processing capabilities of the CPU 21 and the image processing unit 22 are relatively higher than those of a conventional small portable game machine. In other words, it is more effective in displaying an image with a sense of depth in a small portable game machine in which the processing capacity of the CPU 21 and the image processing unit 22 is higher than that of a conventional small portable game machine.

  FIG. 3 is a memory map schematically showing the memory space of the external memory 5.

  The external memory 5 has a program area 31 and a data area 32.

  The program area 31 stores a game program for executing a game by performing image processing for display on the LCD 2.

  The data area 32 stores image data used for image processing of the game program, sound data used for sound processing of the game program, and various parameters used for executing the game program. The image data includes still object data 33 and moving object data 34. The stationary object data 33 includes image data 331 and depth data 332. The image data 331 is texture data assigned for each dot of the screen displayed on the LCD 2. The depth data 332 is data representing a depth assigned to each dot to which texture data of a depth object described later among static objects is assigned. The moving object data 34 includes three-dimensional polygon data 341 and texture data 342 assigned to each polygon.

The game program and image data are stored in advance in the external memory 5 and read via the external memory I / F 26 of the game machine 1. Further, the game program and the image data are stored in a recording medium such as an external server, received from the server by the communication unit 24 of the game machine 1 via a wired or wireless transmission medium, and stored in the memory 23 of the game machine 1. You may make it memorize. In the following description, a transfer medium including a recording medium attached to the game machine 1 such as an external memory 5 in which a game program and image data are stored, and a transmission medium in which the game program and image data are output will be referred to.
(2) Overall processing (2-1) First embodiment The present invention generates a three-dimensional object data and stores (records) it in a recording medium, and reads the data from the recording medium and reads the image. And second image processing for generating

  4 and 5 are flowcharts of processing according to the first embodiment of the present invention. FIG. 4 is a flowchart of first image processing for generating data from a three-dimensional object and writing the data on a transfer medium. FIG. 5 is a flowchart of second image processing for reading data from a recording medium and generating an image.

[First image processing]
In FIG. 4, first, a three-dimensional object to be displayed is modeled (S11, S13). The three-dimensional object includes a moving object and a stationary object. The moving object is an object that moves on the screen of the LCD 2 or a stationary object in accordance with an operation of the controller 3 or a command of the game program, for example, a character on the game. A stationary object is an object that is relatively stationary with respect to a moving object, such as a ground, a wall, or an object in front of the wall on the game. In this embodiment, a moving object and a stationary object are modeled separately.

  In S11, a stationary object is modeled. By modeling a static object, modeling data of the static object including three-dimensional polygon data and texture data is generated. FIG. 10A shows polygon data in modeling data of a stationary object. FIG. 12A shows polygon data in modeling data of another stationary object.

  The modeling data generated here is, for example, modeling data of “win model”. The hit model is a three-dimensional model such as a ground or a wall on which a player or enemy character stands, and is a model for limiting the action range of the character. Therefore, a wall may be created to limit the action range of the character to a place displayed as a space having nothing on the game screen. The hit model is generally composed of very rough polygons (coarse polygons) in order to reduce the modeling process. For example, an object such as a bag is modeled as a cube that covers the object. However, when precise depth data is required as in a depth object as described later, a polygon that is finer than the coarse polygon is used.

  In S12, the three-dimensional modeling data of the static object is rendered using the ortho camera, and the static object image data and the depth data including the two-dimensional image data as shown in FIG. 10B are generated as rendering data. To do.

  The modeling data is configured as coordinate data of a plurality of polygons in a virtual three-dimensional space coordinate system, and texture data representing the colors and materials of the plurality of polygons. Image data represented by a two-dimensional coordinate system and the two-dimensional coordinates taken by the virtual camera specified by a predetermined direction and position on the virtual three-dimensional spatial coordinate system and rendered by the rendering process. Depth data representing the distance is obtained from the virtual camera for each dot of the system image.

  In the present invention, the viewpoint of the virtual camera is set when rendering a three-dimensional object. In this embodiment, the viewpoint of a virtual camera is set as an ortho camera. The ortho camera is a camera that projects a three-dimensional object in parallel to two-dimensional data and has no angle of view. Further, in the present embodiment, the ortho camera is set to move only on a plane having a camera vector (a vector from the camera toward the imaging dot) as a normal line. Also, the rotation angle of the ortho camera is fixed. That is, the rotation angle of the ortho camera when shooting a stationary object and the rotation angle of the ortho camera when rendering a moving object are set to be the same.

  FIG. 13A is an explanatory diagram for explaining rendering by the ortho camera 40. As described above, the ortho camera 40 is a camera that projects a three-dimensional object into two-dimensional data in parallel, and has no angle of view. Further, in the present embodiment, the ortho camera 40 is movable only on a predetermined plane S1 specified by a virtual three-dimensional space coordinate system, as shown in FIG. The plane S1 to which the ortho camera can move is called an ortho plane S1. By rendering by the ortho camera 40, the depth data of the stationary object SO is calculated as a distance from the ortho plane S1. By performing rendering processing using the ortho camera 40 in this way, for example, when displaying a stationary object together with a moving object from the viewpoint of the camera, if all the stationary objects are rendered in advance, it is assumed that the moving object has moved. However, there is no need to render the stationary object again.

  In S13, the moving object is modeled. The moving object modeling data includes polygon data and texture data (not shown) in a virtual three-dimensional spatial coordinate system. FIG. 11 shows polygon data in modeling data of a moving object.

  In S17, the rendering data of the stationary object and the modeling data of the moving object are written in the transfer medium (recording medium or transmission medium).

  The first image processing is desirably performed by an information processing apparatus such as a computer. Each step is executed by a program. Each step can be executed by a combination of external program modules. The modeling in S11 can be performed using a program such as modeling three-dimensional design software. The rendering processing in S12 can be performed using a rendering software, for example, a program such as Maya from Alias Wavefront. The main steps of the first image processing can also be embodied as a plug-in program of a rendering program such as Maya.

[Second image processing]
In FIG. 5, the game machine 1 receives rendering data (image data and depth data) of a stationary object and modeling data of a moving object from a transfer medium, renders the modeling data of the moving object with an ortho camera, Generate rendering data. Then, the rendering data of the stationary object and the rendering data of the moving object are combined to generate an image to be output to the LCD 2.

  In S18, the game machine 1 reads the rendering data of the stationary object and the modeling data of the moving object from the transfer medium. When the transfer medium is the external memory 5, the game machine 1 reads out the rendering data of the stationary object and the modeling data of the moving object from the external memory 5 via the external memory I / F 26. When the transfer medium is a wired or wireless transmission medium, the game machine 1 receives the rendering data of the stationary object and the modeling data of the moving object from the transmission medium via the communication unit 24, and renders the rendering data of the stationary object. And the modeling data of the moving object is written in the memory 23.

  In S19, the modeling data of the moving object is rendered by the ortho camera, and the rendering data of the moving object is generated. Specifically, the image processing unit 22 of the game machine 1 reads the 3D polygon data of the moving object and renders the 3D polygon data with the ortho camera.

  Rendering of 3D polygon data of a moving object by an ortho camera will be described with reference to FIGS. 13 (a) and 13 (b). FIGS. 13A and 13B show the positional relationship between the moving object DO and the stationary object SO in the virtual three-dimensional space coordinate system. As shown in FIG. 13A, when there is a moving object DO (specified by the three-dimensional polygon data) at a specific position in the virtual three-dimensional space coordinate system, the moving object on the ortho plane S1. The moving object DO is rendered by the ortho camera 40 at a position corresponding to the position where the DO exists (the position where the distance to the imaging target pixel of the moving object DO is the shortest distance). Specifically, the moving object DO at a specific position in the virtual three-dimensional space coordinate system is acquired by calculating image data representing an image taken by the ortho camera 40 on the ortho plane S1, and the image data By calculating a depth value Z representing the distance from the ortho camera 40 (orthoplane S1) for each dot, depth data including the depth value Z for each dot of the image data is obtained. The image data is an image of a two-dimensional coordinate system on the screen viewed from the ortho camera 40.

  When the moving object DO moves from the position of FIG. 13A to the position of FIG. 13B, rendering is performed while the ortho camera 40 moves on the ortho plane S1 according to the movement of the moving object DO. For example, when the moving object DO is at the position of FIG. 13A, the dot of the moving object DO calculated from the ortho camera I is from the ortho camera II when the moving object DO is at the position of FIG. 13B. Calculated. Specifically, in the case of the position of FIG. 13A, the dot of the moving object DO whose distance from the ortho camera I is calculated is from the ortho camera II in the case of the position of FIG. The distance is calculated.

  In S20, the rendering data of the stationary object and the rendering data of the moving object are combined to generate an image to be output to the LCD 2. The generation of the rendering data image will be described later with reference to FIG.

  The second image processing is preferably performed by an information processing apparatus such as a game machine. Each step is executed by a program. The rendering process of S19 can be performed by the image processing unit 22 having a graphic processing function such as a renderer. The main steps of the second image processing can be executed by the image processing unit 22 in accordance with instructions from the CPU 21.

[Function and effect]
According to the present embodiment, in the game machine 1 that reads a transfer medium by rendering a three-dimensional model of a stationary object in advance and storing (recording) it in the transfer medium together with the three-dimensional model of a moving object. There is no need to render a stationary object, and the processing amount in the game machine 1 is reduced. Therefore, it is suitable for a small game machine such as a portable game machine. In addition, since the processing capacity of the processor required for processing a stationary object can be saved, the image processing of a moving object can be improved.

  In addition, since both the rendering of the stationary object and the rendering of the moving object are performed from the viewpoint of the ortho camera, even if only the moving object is rendered in real time in the game machine 1, a natural rendering image is obtained as in the case of rendering the stationary object in real time. Is obtained. In addition, as a result, when a moving object represents an image that moves relative to a stationary object, a natural rendered image can be obtained as in the case where both the stationary object and the moving object are rendered on the game machine 1.

  Furthermore, since the still object is rendered by the ortho camera, when the rendering data of the still object is scrolled on the screen, the still object can be scrolled so as to advance in parallel.

(2-2) Second Embodiment FIG. 6 is a flowchart of first image processing for generating three-dimensional object data and transferring it to a transfer medium. For the second image processing, the same processing as in FIG. 5 of the first embodiment is performed.

  In the second embodiment, the image data of rendering data obtained by rendering modeling data of a stationary object is used as temporary image data, and image data generated based on the temporary image data is replaced as image data of a stationary object. Different from the embodiment.

[First image processing]
In S11, a stationary object is modeled. By modeling a static object, modeling data of the static object including three-dimensional polygon data and texture data is generated. FIG. 10A shows polygon data in modeling data of a stationary object. FIG. 12A shows polygon data in modeling data of another stationary object.

  In the second embodiment, new image data is generated based on rendering object image data, which will be described later, and is replaced with the original image data. Therefore, the stationary object modeling data does not have texture data. May be. In the second embodiment, the modeling data of the stationary object only needs to function as the hit model described above, has only polygon data as a basis of the image data generation processing S121 described later, and does not need to have texture data. This is the effect of the form.

  In S12, modeling data of a still object is rendered using the ortho camera 40, and image data and depth data of the still object including two-dimensional image data as shown in FIG. 10B is generated as rendering data. In the present embodiment, in S121, more detailed image data is generated based on the image data of the rendering data obtained in S12 and replaced with the original image data. Therefore, the image data obtained in S12 is referred to as temporary image data. .

  In the present invention, when rendering a three-dimensional object, the viewpoint of the virtual camera is set as an ortho camera. For details of the rendering process by the ortho camera, refer to the first embodiment.

  In S121, a more detailed image is drawn based on the temporary image data to generate image data. Specifically, based on the temporary image data (FIG. 10 (b)) obtained by rendering the three-dimensional modeling data (FIG. 10 (a)), new image data to which fine objects and tools are added is generated. In the example of FIG. 10C, an image having a window on the wall is generated based on the temporary image data (b) obtained by the rendering process. The image data generation step S121 can be performed manually using two-dimensional drawing software or the like.

  In S13, the moving object is modeled. The modeling data of the moving object is composed of polygon data and texture data (not shown) in a virtual three-dimensional space coordinate system. FIG. 11 shows polygon data in modeling data of a moving object.

  In S17, the rendering data of the stationary object generated in S121 and the modeling data of the moving object generated in S13 are written in a transfer medium (recording medium or transmission medium).

  For the second image processing, the same processing as in FIG. 5 of the first embodiment is performed. However, the image data generated in S121 based on the image data of the rendering data obtained in S12 is used as the image data in the rendering data of the still object.

[Function and effect]
According to this embodiment, when rendering a static object, more detailed image data can be generated based on temporary image data obtained by rendering 3D modeling data, and rendering is performed from 3D modeling data. Thus, it is possible to generate a more detailed two-dimensional image than the image data normally obtained. In addition, since the image data of the still object is separately generated, it is not necessary to generate the texture data when modeling the still object, and the modeling work is simple. Furthermore, although a more detailed two-dimensional image can be generated than normal rendering, the amount of data written to the transfer medium and the processing amount of the game machine 1 that reads the transfer medium are almost the same.

(2-3) Third Embodiment FIGS. 7 and 8 are flowcharts of processing according to the third embodiment. FIG. 7 is a flowchart of first image processing for generating data from a three-dimensional object and transferring the data to a transfer medium. FIG. 8 is a flowchart of second image processing for reading data from a transfer medium and generating an image.

[First image processing]
In the third embodiment, the stationary object includes a background object and a depth object. The background object is composed of only image data without rendering data after rendering processing, and the depth object is the same as that of the first embodiment in that rendering data has image data and depth data after rendering processing. Different.

  Also in the third embodiment, it is also possible to use the image data after rendering processing as temporary image data, generate new image data based on the image data, and replace the original image data as in the second embodiment. . The following description is based on an embodiment including the image generation process of the second embodiment.

  In S11, a stationary object is modeled. By modeling a static object, modeling data of the static object including three-dimensional polygon data and texture data is generated. Here, since the image generation process is performed as in the second embodiment, the modeling data of the stationary object may not have the texture data.

  The stationary object includes a background object and a depth object. FIGS. 10A and 12A show polygon data in the modeling data of the background object and the depth object, respectively.

  The modeling data of the background object is the “winning model” modeling data described in the description of the first embodiment. Similar to the second embodiment, the modeling data of the background object only needs to function as a hit model, has only polygon data, and does not have to have texture data.

  On the other hand, the modeling data of the depth object is composed of polygons finer than the polygons constituting the background object (FIG. 10A) as shown in FIG. 12A, and the shape of the temporary image data after rendering is fine. It will be a thing. The depth data of the temporary image data is also generated based on fine polygons, and is therefore highly accurate data. If the entire stationary object is modeled using fine polygons, the burden on the processor necessary for image data generation and image data display processing on the game machine 1 is large. On the other hand, as in this embodiment, the background object occupying most of the stationary objects uses coarse polygons, and only the depth objects occupying a relatively small area are modeled using fine polygons. Compared to modeling using polygons, it is possible to reduce the burden on the processor required for modeling a stationary object. The reason why the background object may be a rough polygon is that, as described above, the background object is an object that regulates the moving range of the moving object, and can be constituted by a hit model. On the other hand, the depth object is an object that the moving object can wrap around as described later, and it is necessary to make a detailed shape with fine polygons. In the present embodiment, it is possible to give a still object a sense of depth by realizing the moving object wraps around the depth object.

  FIG. 16 is a configuration example of a depth object. The depth object 201 is an object including a kettle placed on the floor, a basket behind the kettle, and a pot and a pot hook above the kettle. The depth object 202 is an object for expressing a hole opened in the floor. In the depth object 202, an image located below the opening of the hole is given depth data, so that the moving object is hidden behind the image having the depth data and the moving object enters the hole. Can do. By generating such depth objects 201 and 202, the feet of the moving object DO are hidden behind the heel of the depth object 201 as shown in FIG. 15B, or the moving object DO as shown in FIG. It is possible to display an image of the body entering the hole in the floor.

  In S12a, the three-dimensional modeling data of the background object is rendered using the ortho camera. FIG. 10B shows image data depth data including two-dimensional image data in rendering data obtained by rendering a background object. In the present embodiment, the image data of the rendering data is referred to as temporary image data in order to replace the image data with the more detailed image data generated in S121a based on the image data of the rendering data. The temporary image data of the background object is two-dimensional image data generated from the three-dimensional modeling data.

  In S12b, the three-dimensional modeling data of the depth object is rendered using an ortho camera. FIGS. 12B and 12C respectively show image data and depth data of rendering data obtained by rendering the depth object. Again, the image data of the rendering data is referred to as temporary image data in order to replace the image data with the more detailed image data generated in S121b. The temporary image data of the depth object is two-dimensional image data generated from the three-dimensional modeling data.

  In the present invention, when rendering a three-dimensional object, the viewpoint of the virtual camera is set as an ortho camera. For details of the rendering process by the ortho camera, refer to the first embodiment.

  In S121a, based on the temporary image data of the background object, a more detailed image is drawn to generate image data. Specifically, based on temporary image data (FIG. 10 (b)) obtained by rendering three-dimensional modeling data (FIG. 10 (a)) generated from a hit model or the like, an image with a window on the wall. Is generated (FIG. 10C).

  In S121b, based on the temporary image data of the depth object, a more detailed image is drawn to generate image data. Specifically, more detailed writing is performed on the temporary image data (FIG. 12B) obtained by rendering the three-dimensional modeling data (FIG. 12A) generated from the depth model of the three-dimensional polygon. Image data as shown in (d) is generated.

  In S122a, the image data of the background object (FIG. 10C) and the image data of the depth object (FIG. 12D) are combined to generate still object image data. FIGS. 15A to 15D show screens on which moving objects are displayed together with still object image data. The composition of the image data of the background object and the depth object can be performed by overwriting the image data of the depth object on the image data of the background object. That is, the color values of the image data of the background object and the depth object are written in the memory for each of a plurality of dots constituting the screen on the two-dimensional coordinates. However, the color value of the image data of the depth object is written in the memory for the dot having both color values of the background object and the image data of the depth object. Then, the image data written in the memory is used as the image data of the still object.

  In S122b, depth data of the still object is generated using the depth data of the depth object. Depth value Z is assigned to a dot to which a color value is assigned in image data of a depth object, and a predetermined value is assigned to a dot to which a color value is not assigned, whereby the depth of a stationary object (background object and depth object) is assigned. Generate data. Here, a critical value (far: an infinite distance value from the ortho camera 40) is assigned as the predetermined value. In other words, the depth value Z of the depth object is assigned to the dot (the actually displayed dot) to which the color value is assigned among the image data of the depth object expressed in two-dimensional coordinates, and far is assigned to the other dots. assign. That is, the depth value of the depth data of the depth object is written into the memory for each of a plurality of dots constituting the screen on the two-dimensional coordinate. However, the critical value far is written in the memory for the dots other than the dot having the color value in the image data of the depth object. Then, the data stored in the memory is used as the depth data of the still object. Such a dot to which a far is assigned has an infinite distance from the ortho camera 40, and therefore must be moved when displayed on the screen together with a moving object including 3D polygon data having a finite depth value. The object is displayed in the foreground.

  FIG. 14 is an explanatory diagram for explaining the assignment of depth data of a stationary object. As shown in FIG. 14, the depth object SO2 among the static objects corresponds to dots to which color data is assigned, and a depth value Z is assigned to these dots. A critical value far as a predetermined value is assigned to a dot to which color data is not assigned among depth objects, that is, a dot of only a background object.

  In S13, the moving object is modeled. The moving object modeling data includes polygon data and texture data (not shown) in a virtual three-dimensional spatial coordinate system. FIG. 11 shows polygon data in modeling data of a moving object.

  In S17, the rendering data of the stationary object and the modeling data of the moving object are written in the transfer medium (recording medium or transmission medium).

[Second image processing]
In FIG. 8, the game machine 1 reads out rendering data (image data and depth data) of a stationary object and modeling data of a moving object from a transfer medium, renders the modeling data of the moving object with an ortho camera, and renders the moving object. Generate data. Then, the rendering data of the stationary object and the rendering data of the moving object are combined to generate an image to be output to the LCD 2.

  In S18, the game machine 1 reads the rendering data of the stationary object and the modeling data of the moving object from the transfer medium. When the transfer medium is the external memory 5, the game machine 1 receives the rendering data of the static object, the modeling data of the moving object, and the modeling data of the moving object from the external memory 5 via the external memory I / F 26. read out. When the transfer medium is a wired or wireless transmission medium, the game machine 1 receives the rendering data of the stationary object and the modeling data of the moving object from the transmission medium via the communication unit 24, and renders the rendering data of the stationary object. And the modeling data of the moving object is written in the memory 23.

  In S19, the modeling data of the moving object is rendered by the ortho camera, and the rendering data of the moving object is generated. Specifically, the image processing unit 22 of the game machine 1 reads the 3D polygon data of the moving object and renders the 3D polygon data with the ortho camera.

  For details of rendering the three-dimensional polygon data of the moving object by the ortho camera, refer to the description of the first embodiment. Further, as will be described later, when there is a change in the position and direction of the moving object (the position of the moving destination and the direction at the moving destination) due to the operation input of the controller 3, the position and direction of the moving object are determined, The color value and the depth value viewed from the viewpoint of the ortho camera are calculated by displacing in the position and direction determined on the two-dimensional coordinates.

  In S20, the rendering data of the stationary object and the rendering data of the moving object are combined to generate an image to be output to the LCD 2. The generation of the image will be described later with reference to FIG.

[Image generation processing]
FIG. 9 is a flowchart illustrating in detail the image generation process of S20.

  While the game is in progress, the CPU 21 of the game machine 1 accepts an operation input from the controller 3 via the controller I / F 25 (S101). The CPU 21 determines the position of the moving object and the direction of the moving object at the moving destination (S102).

  When the CPU 21 determines the position and direction of the moving object, the CPU 21 uses the three-dimensional modeling data of the moving object, that is, polygon data and texture data, to the image processing unit 22 to move the moving object at the position and direction. Output control signals to render the object. The image processing unit 22 renders the moving object using the polygon data and texture data of the moving object (S19). By this rendering, rendering data (image data, depth data) of the moving object at the position and direction of the moving object determined in S102 is generated.

  The image processing unit 22 writes the image data and depth data of the moving object in the second frame buffer area and the second depth buffer area of the memory 23 (S103).

  On the other hand, the CPU 21 writes the image data of the still object from the external memory 5 to the first frame buffer area via the external memory I / F at a predetermined cycle, and also stores the depth data of the still object in the first depth buffer area of the memory 23. (S18).

  In S104, the depth data of the moving object and the stationary object are compared, and the image data of the moving object and the stationary object are combined to generate an image to be displayed on the screen of the LCD 2. The CPU 21 sets the depth value Z of the stationary object written in the first depth buffer area and the depth value Z of the moving object written in the second depth buffer area for every dot for all the dots on the screen. And the data in the first frame buffer area is rewritten so that the image data of the object having the smaller depth value Z is displayed. That is, when the depth value Z of the moving object is small (the moving object is in front), the value of the dot in the first frame buffer area is changed from the image data (color data value) of the stationary object to the image data of the moving object. Overwrite and rewrite (color data value). On the other hand, when the depth value Z of the moving object is large (the moving object is on the back side), the color data value of the dot in the first frame buffer area remains the color data value of the stationary object.

  Hereinafter, S104 will be described in detail with reference to FIG. FIG. 17 shows an example in which the image of the moving object rendered based on the position and direction of the moving object determined in S102 is combined with the image of the stationary object. FIG. 17A is a part of the composite image, (b1) is an enlarged view of a part where the depth object is in front of the moving object, (b2) is an enlarged view of a part where the moving object is in front of the background object, c1) and (c2) represent the depth data of the stationary objects of the (b1) and (b2) portions, respectively, and (d1) and (d2) represent the depth data of the moving objects of the (b1) and (b2) portions, respectively.

  In S105, the depth value Z corresponding to the dot n in the depth data of the stationary object is compared with the depth value Z corresponding to the dot n in the depth data of the moving object for the current dot n. For the dots belonging to FIG. 17 (b1), the depth value Z (c1) of the stationary object is smaller than the depth value Z (d1) of the moving object. In the dots belonging to FIG. 17 (b2), the depth value Z (d2) of the moving object is small because the depth value Z (c2) of the stationary object is all the critical value (F).

  In S106, it is determined whether or not the moving object is nearer than the stationary object by determining whether or not the depth value Z of the moving object is smaller than the depth value Z of the stationary object with respect to the current dot n. . When the depth value Z of the moving object is smaller than the depth value Z of the stationary object (the moving object is in front of the stationary object), the process proceeds to S107. In the case of FIG. 17B2, the process moves to S107.

  In S107, the image data value of the moving object of the dot stored at the position corresponding to the dot of the second frame buffer area is used as the dot of the first frame buffer area in which the image data value of the still object is written. Overwrite the position corresponding to.

  On the other hand, if the moving object is not in front of the stationary object in S106, the process from S105 is repeated for the next dot without overwriting the first frame buffer area for the dot. In the case of FIG. 17B1, the processing from S105 is repeated for the next dot.

  The processing from S105 to S107 is repeatedly executed for each dot for all dots on the screen to be displayed. After the processing from S105 to S107 is completed for all dots, the scroll amount of the still object is determined.

[Function and effect]
According to this embodiment, the still object is divided into the background and the depth object, the depth data of the background object can be omitted, and the amount of data written to the transfer medium can be reduced. The background object occupying most of the stationary object uses a rough polygon, and only the depth object occupying a relatively small area is modeled using a fine polygon, so that the modeling burden can be suppressed. In addition, the depth object can be modeled more finely, and a more detailed image can be obtained than an image normally obtained by three-dimensional modeling of a stationary object.

  Further, as in the second embodiment, when rendering a stationary object, more detailed image data can be generated based on temporary image data obtained by rendering 3D modeling data. A more detailed two-dimensional image can be generated than a rendering process normally obtained by rendering from modeling data. In addition, since the image data of the still object is separately generated, it is not necessary to generate the texture data when modeling the still object, and the modeling work is simple. Furthermore, although a more detailed two-dimensional image can be generated than normal rendering, the amount of data written to the transfer medium and the processing amount of the game machine 1 that reads the transfer medium are almost the same.

  According to the present embodiment, only the dots having the color value of the image data of the second object are written into the recording medium, and the predetermined value (critical value far) is written into the other dots. If the value is expressed by a small number of bits, the amount of depth data can be reduced. Further, only the dot having the color value of the image data of the second object needs to have the depth value, and it is only necessary to assign far to the other dots, so that the depth data can be efficiently compressed.

  According to the first to third embodiments, rendering is performed in real time according to the position and direction of the moving object in response to the operation input from the controller 3, while the stationary object need not be rendered, thereby reducing the amount of calculation. be able to.

  According to the first to third embodiments, since a still object is written in the frame buffer and the moving object is overwritten, the amount of calculation at the time of image generation can be reduced.

1 is an external view of a game machine 1 to which an image processing apparatus according to an embodiment of the present invention is applied. 2 is a block diagram illustrating a configuration example of hardware of the game machine 1. FIG. 3 is a memory map schematically showing a memory space of an external memory 5. 3 is a flowchart of first image processing according to the first embodiment. 3 is a flowchart of second image processing according to the first embodiment. It is a flowchart of the 1st image processing concerning a 2nd embodiment. 10 is a flowchart of first image processing according to the third embodiment. It is a flowchart of the 2nd image processing concerning a 3rd embodiment. It is a flowchart of the process which concerns on image generation. It is explanatory drawing explaining the 1st image processing of a background object among stationary objects, Image data (c) produced | generated based on modeling data (a), temporary image data (b) of rendering data, and temporary image data FIG. It is an example of modeling data of a moving object. It is explanatory drawing explaining the 1st process of a depth object among stationary objects, It produces | generates based on modeling data (a), temporary image data (b) of rendering data, depth data (c) of rendering data, and temporary image data It is a figure which shows the image data image data (d) performed. It is a figure explaining rendering by an ortho camera. It is a figure which shows the production | generation of the depth data of a still object. It is a figure showing the image produced | generated by combining a stationary object and a moving object. It is a figure which shows the structural example of a depth object. It is explanatory drawing explaining the synthesis | combination of a stationary object and a moving object.

Explanation of symbols

1 Game console 2 LCD (liquid crystal display)
3 Controller 5 External memory 21 CPU
22 Image processing unit 23 Memory 24 Communication unit 25 Controller I / F
26 External memory I / F
27 LCD driver

Claims (3)

Rendering data including three-dimensional modeling data of each of the first still object and the second still object from the viewpoint of an ortho camera moving on a predetermined plane, and including rendering data including image data for the first still object, For the second still object, rendering data including image data and depth data is generated by the first rendering means, and the image data of the first still object and the image data of the second still object are image data. The image data of the stationary object is generated by the generating means, the depth data of the stationary object is generated by the depth data generating means using the depth data of the second stationary object, and the image data of the stationary object and the depth are generated. data Wherein the rendering data of the still object, data area data are stored is written with 3-dimensional modeling data of the moving object including and,,
Reading means for reading out the rendering data of the stationary object and the three-dimensional modeling data of the moving object from the data area, and moving the three-dimensional modeling data of the moving object on the predetermined plane according to the movement of the moving object The second rendering means for rendering from the viewpoint of the ortho camera to generate rendering data of the moving object, and the depth data of the stationary object and the depth data of the moving object generated by the second rendering means are compared. Then, using the comparison result, the rendering data of the stationary object read by the reading unit and the rendering data of the moving object generated by the second rendering unit are combined to generate a two-dimensional image. Image generator Program area in which the image processing program causing a computer to function are stored as,
Including a recording medium ,
The first rendering means includes
(A) From the three-dimensional modeling data of each of the first still object and the second still object, for each of a plurality of dots constituting a virtual two-dimensional screen, a color value and a depth value viewed from the viewpoint of the ortho camera are obtained. Means for calculating;
(B) rendering data having image data including the plurality of calculated color values for the first still object, and image including the plurality of calculated color values for the second still object. Generating rendering data having depth data including data and a plurality of depth values;
The image data generation means includes
(A) For each dot of the plurality of dots, the color value of the image data of the second still object is set to a dot having both color values of the image data of the first still object and the second still object. First recording means for writing to a memory and writing the color value to the memory for a dot having a color value only in the image data of either the first or second still object;
(B) means for outputting the data recorded in the memory as the image data after completion of the processing by the first recording means;
The depth data generating means
(A) For each dot of the plurality of dots, the depth value of the depth data of the second still object is written into the memory, and for dots other than the dot having the color value of the image data of the second still object Second recording means for writing a predetermined value to the memory;
(B) A recording medium including means for outputting the data stored in the memory as the depth data after the processing by the second recording means is completed. Rendering data including three-dimensional modeling data of each of the first still object and the second still object from the viewpoint of an ortho camera moving on a predetermined plane, and including rendering data including image data for the first still object, For the second still object, rendering data including image data and depth data is generated by the first rendering means, and the image data of the first still object and the image data of the second still object are image data. The image data of the stationary object is generated by the generating means, the depth data of the stationary object is generated by the depth data generating means using the depth data of the second stationary object, and the image data of the stationary object and the depth are generated. data Wherein the rendering data of the still object, data area data are stored is written with 3-dimensional modeling data of the moving object including and,,
Reading means for reading out the rendering data of the stationary object and the three-dimensional modeling data of the moving object from the data area, and moving the three-dimensional modeling data of the moving object on the predetermined plane according to the movement of the moving object The second rendering means for rendering from the viewpoint of the ortho camera to generate rendering data of the moving object, and the depth data of the stationary object and the depth data of the moving object generated by the second rendering means are compared. Then, using the comparison result, the rendering data of the stationary object read by the reading unit and the rendering data of the moving object generated by the second rendering unit are combined to generate a two-dimensional image. Image generator Program area in which the image processing program causing a computer to function are stored as,
Including a recording medium ,
The image processing program further includes a determination unit that determines a position and a direction of the moving object on the virtual two-dimensional screen,
The first rendering means includes
(A) From the three-dimensional modeling data of each of the first still object and the second still object, for each of a plurality of dots constituting a virtual two-dimensional screen, a color value and a depth value viewed from the viewpoint of the ortho camera are obtained. Means for calculating;
(B) rendering data having image data including the plurality of calculated color values for the first still object, and image including the plurality of calculated color values for the second still object. Generating rendering data having depth data including data and a plurality of depth values;
The second rendering means includes
(A) From the three-dimensional modeling data of the moving object, for each of a plurality of dots constituting a virtual two-dimensional screen, the moving object is displaced in the position and direction determined by the determining means to Means for calculating a color value and a depth value viewed from a viewpoint;
(B) generating rendering data having image data including a plurality of calculated color values and depth data including a plurality of depth values;
The image generation means includes
For each dot of the plurality of dots,
(A) a depth comparison means for comparing depth values of the stationary object and the moving object and determining which is nearer;
(B) For a dot having both color values in the image data of the stationary object and the moving object, the color value of the image data of the near object determined by the depth comparison means is written in the memory, and the stationary data A third recording means for writing the color value into the memory for a dot having a color value only in the image data of either the object or the moving object;
(C) a recording medium including means for outputting the data recorded in the memory as an image after the processing by the depth comparison unit and the third recording unit is completed for all of the plurality of dots. The image data of the stationary object stored in the data area is the rendering data of the first stationary object and / or the second stationary object generated by the first rendering means, and the first stationary object and / or recording medium according to claim 1 or 2 which is the image data that has been replaced with the image data generated based on the image data of the second stationary object.

Images