JP4086002B2 - Program, image processing apparatus and method, and recording medium - Google Patents

Description

  The present invention relates to a program for applying various effects to an image for display, an image processing apparatus and method, and a recording medium storing the program.

  When a 3D model is displayed on a screen on a game device or the like, for example, when the 3D model is formed of polygons, the position of the camera is determined by performing rotation, movement, shading for a light source, perspective transformation, etc. The image of the three-dimensional model viewed from the above is generated, and texture mapping is performed to attach a texture to the three-dimensional model.

  In order to generate a plurality of three-dimensional models and display them on the screen, various processes as described above are performed on each model. However, the time required for this increases as the number of models to be generated and displayed increases. It will be big. In real-time image display such as a game, it is necessary to draw an image in a time much shorter than 1/60 second that is one frame time.

In such image processing, processing for applying various effects to the original image is performed. For example, in the case of shading processing, a texture to be an original image and a parameter texture for shading are prepared, and rendering is performed by multi-texturing in which a plurality of two-dimensional images are pasted on the object surface as textures. . In this way, various effects can be applied by combining a plurality of textures.
JP 2002-92631 A

  However, when the multi-texturing function is not provided by the hardware, it is necessary to draw the texture a plurality of times for the shading process described above. Therefore, real-time image display may be difficult.

  An object of the present invention is to provide a program, an image processing apparatus and method, and a recording medium storing the program that can perform processing for applying various effects to an image at high speed.

  A program according to an aspect of the present invention is an image processing apparatus that generates display image data by processing image data having color information and additional information for each pixel, and outputs a display image based on the display image data to a display unit. A program that can be executed in a step of processing one or more pixels forming the image data to generate a first pixel including first color information and first additional information; A second color information corresponding to the first additional information is read from a color lookup table; a third color information including a mixture of the second color information and the first color information; Generating two pixels, and storing the second pixel in a frame buffer as part of the display image data.

A program according to an aspect of the present invention is an image processing for generating display image data by pasting texture data having color information and an alpha value for each pixel to a polygon, and outputting a display image based on the display image data to display means A program for causing an image to be executed by the apparatus , the image processing apparatus including a first color information and a first alpha value by pasting one or more pixels constituting the texture data to a polygon. Generating one pixel, reading second color information corresponding to the first alpha value from a color lookup table, and mixing the second color information and the first color information Generating a second pixel including the third color information, and storing the second pixel in the frame buffer as part of the display image data. Characterized in that to execute a step of憶.

In the above program, the vertex of the polygon has color information and an alpha value, and the image processing apparatus is caused to execute a step of changing the alpha value of the vertex by light source calculation to the polygon, and the texture data When the image processing apparatus executes the step of generating the first pixel including the first color information and the first alpha value by pasting one or more pixels constituting the pixel to the polygon, the polygon The first alpha value of the first pixel of the texture data may be changed and pasted based on the alpha value of the vertex.

In the program described above, the index is the additional information of the color look-up table is within a first predetermined range to a value within a second predetermined range, said color lookup table index is outside the first predetermined range Is set to a value within a third predetermined range, the additional information of one or more pixels constituting the image data is set to a value within the first predetermined range, and the image processing apparatus The step of specifying the first pixel may be executed by determining whether or not the first additional information is a value within the first predetermined range.

In the program described above, the index is the alpha value of the color lookup table is within a first predetermined range to a value within a second predetermined range, said color lookup table index is outside the first predetermined range Is set to a value within a third predetermined range, the alpha value of one or more pixels constituting the texture data is set to a value within the first predetermined range, and the texture data is configured. The alpha value of one or more pixels is set to a value within the first predetermined range, and the image processing apparatus determines whether the first alpha value is within the first predetermined range. Thus, the step of specifying the first pixel may be executed.

  In the above-described program, the image processing apparatus may be caused to execute a step of performing special image processing on the identified first pixel.

In the above-described program, a plurality of types of the color lookup table are prepared,
The second color information may be dynamically changed by switching the color lookup table.

  An information processing apparatus according to an aspect of the present invention includes means for executing the above-described program.

  An information processing method according to an aspect of the present invention includes a step executed by the above-described program.

  A recording medium according to one embodiment of the present invention stores the above-described program.

  As described above, according to the present invention, processing for applying various effects to an image can be performed at high speed without using dedicated hardware.

[One Embodiment]
A game apparatus according to an embodiment of the present invention will be described with reference to FIGS.

(Configuration of game device)
The overall configuration of the game device will be described with reference to FIG.

  The game apparatus 10 is used as a CPU 12 that executes game programs, controls the entire system, calculates coordinates for image display, and the like, and a buffer memory that stores programs and data necessary for the CPU 12 to perform processing. A main memory (RAM) 14 is commonly connected by a bus line and is connected to a bus arbiter 16. The bus arbiter 16 controls the flow of programs and data with each block of the game apparatus 10 and devices connected to the outside.

  A game data storage device or storage medium (including an optical disc such as a CD-ROM that is a game recording medium, an optical disc drive, etc.) 18 in which game programs and data (including video data and music data) are stored, and a game device A BOOTROM 20 storing a program and data for starting 10 is connected to the bus arbiter 16 via a bus line.

  A graphics processor that reproduces video (MOVIE) data read from the program data storage device or the storage medium 18 via the bus arbiter 16 and generates an image for image display in accordance with the player's operation or game progress ( (GPU) 22 is connected to a video memory 24 that stores graphic data necessary for image generation by the GPU 22 and is provided with a frame buffer for storing display image data corresponding to a display image. Display image data stored in the frame buffer of the video memory 24 is converted from a digital signal to an analog signal by a video DAC (not shown), and output from the GPU 22 to an external display monitor 42 in synchronization with the image synchronization signal. A display image based on the display image data is displayed on the display monitor 42.

  A sound processor 26 that reproduces music data read from the program data storage device or the storage medium 18 via the bus arbiter 16 and generates sound effects and sounds according to the operation by the player and the progress of the game, and the sound processor 26 provides an effect. A sound memory 28 for storing sound data and the like necessary for generating sound and sound is connected. The audio signal output from the sound processor 26 is converted from a digital signal to an analog signal by an audio DAC (not shown) and output from an external speaker 44.

  A controller 40 provided with direction keys, various operation buttons, and the like is connected to the bus arbiter 16 via a peripheral I / F (interface) 30. The peripheral I / F 30 outputs a signal for controlling the game apparatus 10 in accordance with an operation by the player.

  A communication I / F (interface) 32 is connected to the bus arbiter 16. The communication I / F (interface) 32 is connected to an external network such as a telephone line via an external modem 46. The communication I / F (interface) 32 and the modem 46 are a terminal adapter (TA), a router, a cable modem using a cable TV line, a wireless communication means using a mobile phone or PHS, and an optical fiber using an optical fiber. Other communication methods such as fiber communication means may be used.

(Various data used for image processing)
Details of various data used in image processing by the game apparatus of the present embodiment will be described.

(Polygon data)
The polygon is a polygon used when representing a three-dimensional shape in three-dimensional graphics. There are many triangles and quadrangles. Each vertex is provided with 32-bit color information (R, G, B, A). The 32-bit color information is composed of three primary color information of 8-bit R (red) information, 8-bit G (green) information, 8-bit B (blue) information, and additional information of 8-bit A (alpha value). Has been.

  Original polygon data is stored in a recording medium such as a CD or DVD in which a game program is stored, but is loaded onto the main memory 14 or the video memory 24 when drawing processing is performed.

(Texture data)
The texture is an image that is pasted to express the texture of the surface of the object in 3D graphics. Each pixel is represented by 32-bit color information (R, G, B, A). The 32-bit color information is composed of three primary color information of 8-bit R (red) information, 8-bit G (green) information, 8-bit B (blue) information, and additional information of 8-bit A (alpha value). Has been.

  Original texture data is stored in a recording medium such as a CD or a DVD in which a game program is stored, but is loaded onto the main memory 14 or the video memory 24 when drawing processing is performed.

(CLUT: Color Lookup Table)
The CLUT (color lookup table) is a lookup table that is referred to when image processing such as color synthesis is performed using the alpha value of color information as a key, as will be described later, and is also called a color palette. It consists of 256 palettes (color information) according to the value. Each palette of the color look-up table is represented by 32-bit color information (R, G, B, A). The 32-bit color information is composed of three primary color information of 8-bit R (red) information, 8-bit G (green) information, 8-bit B (blue) information, and additional information of 8-bit A (alpha value). Has been. Note that the color look-up table may not include additional information on the alpha value depending on the application.

  The original color look-up table is stored in a recording medium such as a CD or DVD in which a game program is stored, but is loaded onto the main memory 14 or the video memory 24 when performing drawing processing.

(Storage location of various data)
Original polygon data, texture data, a color lookup table, and the like are stored in a storage medium 18 such as a CD or DVD in which a game program is stored.

  When the storage medium 18 is loaded in the game apparatus 10 and a game program is read, the game program 10 is loaded onto the main memory 14 or the video memory 24 as necessary when performing a drawing process or the like.

  As shown in FIG. 2, the video memory 24 has a frame buffer 24A for recording image information for one screen displayed on the display monitor 24, and a drawing memory for drawing image information to be written next in the frame buffer 24A. 24B is provided. When the video memory 24 is initialized, areas of the frame buffer 24A and the drawing memory 24B are secured.

  Each pixel in the frame buffer 24A and the drawing memory 24B is expressed by 32-bit color information (R, G, B, A). The 32-bit color information is composed of three primary color information of 8-bit R (red) information, 8-bit G (green) information, 8-bit B (blue) information, and additional information of 8-bit A (alpha value). Has been.

(Basic image processing)
Basic image processing by the game apparatus according to the present embodiment will be described with reference to FIGS. In this image processing, the color information of the color lookup table that is referenced using the alpha value of the texture data as an index key is mixed with the color information of the original texture data.

  First, as shown in the flowchart of FIG. 3, texture data and a color lookup table for image processing are created by the game designer (step S10). The created original texture data and color look-up table are recorded on the storage medium 18 such as a CD or DVD together with the game program (step S11).

  Next, when the storage medium 18 is loaded in the game apparatus 10 to execute the game program, the original texture data and the color lookup table are loaded into the main memory 14 together with the game program as shown in FIG. (Step S12).

  Next, when drawing an image, texture data and a color look-up table are loaded from the main memory 14 into the video memory 24 (step S13).

  Next, in order to paste predetermined texture data at a predetermined location of a three-dimensional model such as a polygon, the texture data is drawn in the drawing memory 24B of the video memory 24 (step S14).

  As shown in FIG. 4A, each pixel of the texture data 50 is expressed by 32-bit color information (RGBA) as described above. In step S14, an alpha value is stored in the drawing memory 24B. The included 32-bit color information is drawn as it is. The alpha value written in the drawing memory 24B remains the original texture data.

Next, using the alpha value (A1) of the texture data 50 drawn in the drawing memory 24B as an index key, the color information in the color lookup table 52 shown in FIG. The information is mixed (step S15). As shown in FIG. 4A, if a pixel of the texture data 50 is color information (R1, G1, B1, A1), the color look shown in FIG. It is mixed with the A1 color information (R2, G2, B2, A2) of the uptable 52. As shown in FIG. 4C, the mixed image has a mixing ratio determined by the alpha value A2 of the A1 color information (R2, G2, B2, A2) of the color lookup table 52, and the texture The mixed color information (R, G, B, A) for that pixel in data 50 is R = R1 (1-A2) + R2 · A2.
G = G1 (1-A2) + G2 ・ A2
B = B1 (1-A2) + B2 ・ A2
A = A1 (1-A2) + A2 ・ A2
It becomes.

  Next, the drawing memory 24B drawn in this way is written to the frame buffer 24A as a display memory (step S16), and a display image based on the display image data written to the frame buffer 24A is displayed on the display monitor 42. (Step S17).

  A specific example of basic image processing according to this embodiment is shown in FIG. FIG. 5A shows an image in which color information is not mixed by the color look-up table in a state of drawing with original texture data. FIG. 5B is an image in which the alpha value A in the state of FIG. The alpha value A of the person and window images is large, and the alpha value A of the other indoor images is small. As the color look-up table 52, the color information (R, G, B) of a large alpha value A and / or its alpha value A is large, and the color information (R, G, B) of a small alpha value A and / or its alpha By reducing the value A, the region with a small alpha value becomes darker as shown in FIG.

  As a result, a realistic expression can be obtained by using only the color look-up table while using the same texture data as the daytime state for the night state in the indoor image where the outside can be seen from the window.

(Pseudo-projection image processing)
Pseudo-projection image processing by the game device of the present embodiment will be described with reference to FIGS. In this image processing, light source calculation is performed on a three-dimensional model using polygons, the result of light source calculation is reflected in the alpha value of color information at each vertex of the polygon, and texture data is pasted on the polygon. The color lookup table is referenced using the alpha value of texture data pasted in consideration of light source calculation as an index key, and the referenced color information is mixed with the color information of the texture data.

  First, as shown in the flowchart of FIG. 6, texture data, a color lookup table, and polygon data for image processing are created by the game designer (step S20). The created original texture data, color look-up table, and polygon data are recorded together with the game program on a storage medium 18 such as a CD or DVD (step S21).

  Next, when the storage medium 18 is loaded in the game apparatus 10 in order to execute the game program, the original texture data, color look-up table, and polygon data are stored in the main memory 14 together with the game program as shown in FIG. Loaded (step S22).

  Next, when drawing an image, the texture data and the color lookup table are loaded from the main memory 14 to the video memory 24 (step S23).

  Next, a predetermined texture data is pasted and drawn at a predetermined position of the polygonal three-dimensional model (step S24). Before the drawing, light source calculation is performed on the polygon displayed model.

  If the cubic three-dimensional model shown in FIG. 7A is assumed, the result of light source calculation is substituted into the alpha value (A) of the color information of each vertex of the polygon from the direction of the light source. For example, the alpha value (A) of the color information of each vertex A, B, C,..., H of the cube is set to 255 at the maximum at the vertex H closest to the light source as shown in FIG. The vertexes D, E, F, and G that are next closest to each other are set to 127 that is half of them, the vertices B and C that are next to the light source are set to half that are 63, and the vertex A that is farthest from the light source is set to 0.

  When the texture data is pasted on the cubic three-dimensional model, the alpha value (A) of the color information of each vertex reflecting the light source calculation result is reflected in the pasted texture data (step S24).

  A case where texture data is pasted on the upper surface of the three-dimensional model shown in FIG. 7A will be described with reference to FIG. The alpha value of each vertex A, B, C, D of the polygon 54 on the upper surface shown in FIG. 8A reflects the result of the light source calculation described above. When the texture data 50 is pasted on the polygon 54, the alpha value (A) of each pixel of the texture data 50 is changed based on the alpha value of each vertex. That is, the vertex D is half of the original alpha value, the vertices B and C are 1/4 of the original alpha value, and the vertex A is zero. A ratio obtained by linearly approximating these vertices is obtained.

  The texture data 50 whose alpha value has been changed in this way is drawn in the drawing memory 24B of the video memory 24 (step S24).

Next, using the alpha value (A1) of the texture data 50 drawn in the drawing memory 24B as an index key, the color information in the color lookup table 52 shown in FIG. 8C is read, and the color in the drawing memory 24B is read. The information is mixed (step S25). As shown in FIG. 8 (b), if a pixel of the texture data 50 is color information (R1, G1, B1, A1), the color look shown in FIG. 8 (c) using the alpha value A1 as a key index. It is mixed with the A1 color information (R2, G2, B2, A2) of the uptable 52. As shown in FIG. 8D, the mixed image has its mixing ratio determined by the alpha value A2 of the A1 color information (R2, G2, B2, A2) in the color lookup table 52, and the texture The mixed color information (R, G, B, A) for that pixel in data 50 is R = R1 (1-A2) + R2 · A2.
G = G1 (1-A2) + G2 ・ A2
B = B1 (1-A2) + B2 ・ A2
A = A1 (1-A2) + A2 ・ A2
It becomes.

  Next, the drawing memory 24B drawn in this way is written in the frame buffer 24A as a display memory (step S26), and the image written in the frame buffer 24A is displayed on the display monitor 42 (step S27).

  A specific example of pseudo projection processing according to this embodiment is shown in FIG. FIG. 9A is an image when rendering is performed without performing the pseudo-projection processing of the present embodiment, and FIG. 9B is an image when rendering is performed after performing the pseudo-projection processing of the present embodiment. 9A is also shaded by the look-up table 52, but the image of FIG. 9B reflects the result of light source calculation and expresses a more realistic shade.

  Thus, by reflecting the result of the light source calculation, it is possible to express the shadow of the realistic three-dimensional model.

(Toon shading image processing)
Toon shading image processing by the game apparatus according to the present embodiment will be described with reference to FIGS.

  As a shading in the basic image processing and pseudo-projection image processing described above, a toon that applies shadows of the same color to pixels whose angle between the normal vector and the light vector falls within a certain range in order to obtain an animation-like effect. This is a case where shading is performed.

  In the past, in order to perform toon shading, it was necessary to prepare texture data for this purpose. However, according to the present embodiment, it is easy to tune using the same texture data by devising a color lookup table. Shading can be realized.

  In the case of performing toon shading, 256 palettes (color information) in the color lookup table are rapidly changed. As shown in FIG. 10A, the three primary colors (R, G, B) of the color information are set to small values that are dark colors when the index is in the range of 0 to 127, for example. In the range from 128 to 255, the index is changed to a large value that is a bright color. Since the alpha value (A) does not need to be controlled for each pixel in this process, the alpha value (A) is set to a completely opaque alpha value or a constant alpha value close to complete opaqueness (FIG. 10B).

  As a result, even if the alpha value of each pixel of the image information drawn in the drawing memory slightly changes around 127, the color information of the color look-up table to be synthesized thereby changes abruptly. A shading effect can be obtained.

  A specific example of toon shading according to this embodiment is shown in FIG. Depending on how the look-up table is set, shadows are emphasized and an animation-like shaded image is expressed.

(Partial image clipping process)
The partial image cutout processing by the game device of this embodiment will be described with reference to FIGS. In this image processing, a partial look-up color lookup table is prepared, a partial image is cut out based on the alpha value of each pixel of the texture data, special image processing is performed on the cut-out partial image, and the processed partial image is processed. Are combined with the original image to obtain a whole image that has been partially specially processed.

  First, as shown in the flowchart of FIG. 12, texture data for image processing, a normal color lookup table, and a partial cutout color lookup table are created by the game designer (step S30). The created original texture data, normal color look-up table, and partial cut-out color look-up table are recorded on the storage medium 18 such as a CD or DVD together with the game program (step S31).

  Next, when the storage medium 18 is attached to the game apparatus 10 in order to execute the game program, as shown in FIG. 2, along with the game program, the original texture data, the color look-up table, and the partial look-up color look-up The table is loaded into the main memory 14 (step S32).

  Next, when drawing an image, the texture data, the color lookup table, and the partial cropping color lookup table are loaded from the main memory 14 to the video memory 24 (step S33).

  Next, in order to paste predetermined texture data to a predetermined location of a three-dimensional model such as a polygon, the texture data is drawn in the drawing memory 24B of the video memory 24 (step S34).

  Next, using the alpha value (A1) of the texture data 50 drawn in the drawing memory 24B as an index key, the color information in the normal color lookup table is read and mixed with the color information in the drawing memory 24B (step S35). In this way, the entire image 56 of FIG. The processing so far is the same as the basic image processing described above.

  Next, referring to the alpha value (A) of each pixel in the drawing memory 24B as an index of the partial cutout color lookup table, the entire image 56 in FIG. 13A is shown in FIG. 13C. The partial image 58 is cut out (step S36). As a result, the partial image 57 shown in FIG. 13B remains in the drawing memory 24B.

  Next, special processing is performed on the partial image 58 shown in FIG. 13C to obtain a partial image 59 shown in FIG. 13D (step S37).

  Next, the partial image 59 after special processing shown in FIG. 13D is combined with the partial image 57 shown in FIG. 13B remaining in the drawing memory 24 (step S38).

  Next, the drawing memory 24B synthesized in this way is written in the frame buffer 24A as a display memory (step S39), and the image written in the frame buffer 24A is displayed on the display monitor 42 (step S40).

  Specific examples of the partially cut-out image processing according to the present embodiment are shown in FIGS.

  FIG. 14A shows an image in which color information is mixed by a color look-up table in a state rendered by basic image processing. FIG. 14B is an image displaying an alpha value in a range to be cut out as a partial image in the image in the state of FIG. It can be seen that the image of the window scheduled to be subjected to the glare process, which is a special process, has an alpha value cut out. FIG. 14C is an image in a state where the glare-processed partial image is combined with the original image.

  FIG. 15 is an image in a state where a part of the image is cut out and hatched partially, and is synthesized with the original image in the same manner.

  Thereby, a partial image such as a window can be cut out, special processing can be performed without affecting other images, and effective image expression can be achieved.

(CLUT switching image processing)
CLUT switching image processing by the game apparatus of this embodiment will be described with reference to FIGS.

  Similar to the basic image processing, this image processing mixes the color information in the color lookup table, which is referred to using the alpha value of the texture data as an index key, with the color information of the original texture data. A dynamically moving image is obtained by dynamically switching the look-up table.

  As shown in FIG. 16A, each pixel of the texture data 50 is expressed by 32-bit color information (RGBA). First, 32-bit color information including an alpha value is stored in the drawing memory 24B. Draw as is.

  Subsequently, using the alpha value (A1) of the texture data 50 drawn in the drawing memory 24B as an index key, the color lookup table 52A shown in FIG. 16B or the color lookup shown in FIG. The color information in the table 52B is read out and mixed with the color information in the drawing memory 24B.

When referring to the color look-up table 52A shown in FIG. 16B, a pixel in which the texture data 50 exists is a color look-up table using the alpha value A1 of the color information (R1, G1, B1, A1) as a key index. 52A is mixed with the A1 color information (R2, G2, B2, A2). In the mixed image, as shown in FIG. 16D, the mixing ratio is determined by the alpha value A2 of the A1 color information (R2, G2, B2, A2) of the color lookup table 52A, and the texture is determined. The mixed color information (R, G, B, A) for that pixel in data 50 is R = R1 (1-A2) + R2 · A2.
G = G1 (1-A2) + G2 ・ A2
B = B1 (1-A2) + B2 ・ A2
A = A1 (1-A2) + A2 ・ A2
It becomes.

When referring to the color look-up table 52B shown in FIG. 16C, a pixel in which the texture data 50 is located uses the alpha value A1 of the color information (R1, G1, B1, A1) as a key index. It is mixed with the A1 color information (R3, G3, B3, A3) of 52B. In the mixed image, as shown in FIG. 16D, the mixing ratio is determined by the alpha value A3 of the A1 color information (R3, G3, B3, A3) of the color lookup table 52B, and the texture The mixed color information (R, G, B, A) of that pixel of data 50 is R = R1 (1-A3) + R3.A3
G = G1 (1-A3) + G3 ・ A3
B = B1 (1-A3) + B3 ・ A3
A = A1 (1-A3) + A3 ・ A3
It becomes.

  By dynamically switching between the color lookup table 52A and the color lookup table 52B, a dynamic image can be expressed using the same texture data.

  A specific example of CLUT switching image processing according to this embodiment is shown in FIG. The image in FIG. 17A is an original image before image processing according to the present embodiment is performed. The image of FIG. 17B is an image that has been subjected to image processing by one color lookup table 52A, and the image of FIG. 17C is an image that has been subjected to image processing by the other color lookup table 52B. is there. An image in which different positions in the vicinity of the character's head shine is obtained. By dynamically switching between the color look-up tables 52A and 52B, the light appears to flicker near the character's head.

  As described above, according to this embodiment, it is possible to perform processing for applying various effects to an image at high speed.

[Modified Embodiment]
The present invention is not limited to the above embodiment, and various modifications can be made.

  For example, although the above embodiment is a home game device, the present invention is not limited to this, and a portable game device can be used even if it is a business game device as long as it has a computer. It may be a device or a general-purpose electronic device such as a personal computer. In particular, the present invention is effective for small electronic devices such as mobile phones and PDAs that do not have a multi-texture function.

  In the above embodiment, the three primary color information and the additional information are provided in each palette of the color lookup table, but the additional information may not be provided.

  In the above embodiment, the color information is expressed in RGB format, but may be expressed in other formats such as YUV format.

  The present invention is not limited to the image processing of the above-described embodiment, and can be applied to any image processing that refers to a lookup table using an alpha value as an index key.

It is a block diagram which shows the structure of the game device by one Embodiment of this invention. It is a block diagram which shows the structure of the principal part of the game device by one Embodiment of this invention. It is a flowchart which shows the basic image process by one Embodiment of this invention. It is explanatory drawing of the basic image process by one Embodiment of this invention. It is a figure which shows the specific example of the basic image process by one Embodiment of this invention. It is a flowchart which shows the pseudo projection image process by one Embodiment of this invention. It is explanatory drawing (the 1) of the pseudo projection image processing by one Embodiment of this invention. It is explanatory drawing (the 2) of the pseudo projection image processing by one Embodiment of this invention. It is a figure which shows the specific example of the pseudo projection image process by one Embodiment of this invention. It is explanatory drawing of the toon shading image process by one Embodiment of this invention. It is a figure which shows the specific example of the toon shading image process by one Embodiment of this invention. It is a flowchart which shows the partial image cutout process by one Embodiment of this invention. It is explanatory drawing of the partial image cutout process by one Embodiment of this invention. It is a figure which shows the specific example of the partial image cutout process by one Embodiment of this invention. It is a figure which shows the specific example of the partial image cutout process by one Embodiment of this invention. It is explanatory drawing of CLUT switching image processing by one Embodiment of this invention. It is a figure which shows the specific example of CLUT switching image processing by one Embodiment of this invention.

Explanation of symbols

10 ... Game device 12 ... CPU
14 ... Main memory (RAM)
16 ... Bus arbiter 18 ... Program data storage device or storage medium 20 ... BOOTROM
22 ... Graphics processor (GPU)
24 ... Video memory 26 ... Sound processor 28 ... Sound memory 30 ... Peripheral I / F (interface)
32 ... Communication I / F (interface)
40 ... Controller 42 ... Display monitor 44 ... Speaker 46 ... Modem

Claims (12)

A program for causing an image processing apparatus to process image data having color information and additional information for each pixel to generate display image data, and to output a display image based on the display image data to a display unit. ,
In the image processing apparatus,
Processing one or more pixels constituting the image data to generate a first pixel including first color information and first additional information;
Reading second color information corresponding to the first additional information from a color lookup table;
Generating a second pixel including third color information obtained by mixing the second color information and the first color information;
Program for executing the steps of storing in the frame buffer the second pixel as part of the display image data. This is a program for causing an image processing apparatus to generate display image data by pasting texture data having color information and an alpha value for each pixel to a polygon, and outputting a display image based on the display image data to a display means. And
In the image processing apparatus,
Pasting one or more pixels comprising the texture data to a polygon to generate a first pixel including first color information and a first alpha value;
Reading second color information corresponding to the first alpha value from a color lookup table;
Generating a second pixel including third color information obtained by mixing the second color information and the first color information;
Program for executing the steps of storing in the frame buffer the second pixel as part of the display image data. The program according to claim 2,
The vertex of the polygon has color information and an alpha value,
In the image processing apparatus,
Executing the step of changing the alpha value of the vertex by light source calculation to the polygon;
When causing the image processing apparatus to execute a step of generating a first pixel including first color information and a first alpha value by pasting one or more pixels constituting the texture data to a polygon. A program that changes and pastes the first alpha value of the first pixel of the texture data based on the alpha value of the vertex of the polygon. The program according to claim 1,
Index the additional information of the color look-up table is within a first predetermined range to a value within a second predetermined range, the additional information of the color look-up table is indexed the first predetermined range the Set to a value within the predetermined range of 3 ,
Setting additional information of one or more pixels constituting the image data to a value within the first predetermined range;
In the image processing apparatus,
A program for executing the step of specifying the first pixel by determining whether or not the first additional information is a value within the first predetermined range. In the program according to claim 2 or 3,
Index the alpha value of the color lookup table is within a first predetermined range to a value within a second predetermined range, the alpha value of the color look-up table is indexed the first predetermined range the Set to a value within the predetermined range of 3 ,
Setting an alpha value of one or more pixels constituting the texture data to a value within the first predetermined range;
In the image processing apparatus,
A program for executing the step of specifying the first pixel by determining whether or not the first alpha value is a value within the first predetermined range. The program according to claim 4 or 5,
In the image processing apparatus,
A program for executing a special image processing step on the identified first pixel. The program according to any one of claims 1 to 6,
A plurality of types of the color lookup table are prepared,
The program for dynamically changing the second color information by switching the color look-up table. An image processing apparatus for processing image data having color information and additional information for each pixel to generate display image data, and outputting a display image based on the display image data to a display means,
Processing one or more pixels constituting the image data to generate a first pixel including first color information and first additional information;
Reading second color information corresponding to the first additional information from a color lookup table;
Generating a second pixel including third color information obtained by mixing the second color information and the first color information;
And a step of storing the second pixel in a frame buffer as part of the display image data. An image processing apparatus that generates display image data by pasting texture data having color information and an alpha value for each pixel to a polygon, and outputs a display image based on the display image data to a display unit,
Pasting one or more pixels comprising the texture data to a polygon to generate a first pixel including first color information and a first alpha value;
Reading second color information corresponding to the first alpha value from a color lookup table;
Generating a second pixel including third color information obtained by mixing the second color information and the first color information;
And a step of storing the second pixel in a frame buffer as part of the display image data. An image processing method by an image processing system for processing image data having color information and additional information for each pixel to generate display image data, and outputting a display image based on the display image data to a display means,
Processing one or more pixels constituting the image data to generate a first pixel including first color information and first additional information;
Reading second color information corresponding to the first additional information from a color lookup table;
Generating a second pixel including third color information obtained by mixing the second color information and the first color information;
Storing the second pixel in a frame buffer as part of the display image data. An image processing method by an image processing system for generating display image data by pasting texture data having color information and an alpha value for each pixel to a polygon, and outputting a display image based on the display image data to a display means,
Pasting one or more pixels comprising the texture data to a polygon to generate a first pixel including first color information and a first alpha value;
Reading second color information corresponding to the first alpha value from a color lookup table;
Generating a second pixel including third color information obtained by mixing the second color information and the first color information;
Storing the second pixel in a frame buffer as part of the display image data. A computer-readable storage medium recorded with the program according to claim 1.