JP3779620B2 - Image processing program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image processing program.
[0002]
[Prior art]
In image processing technology, there is a blur process. This is a process of blurring the target object. In addition, by applying this blur process to a moving image, it is possible to represent the trajectory of an object that has moved between the plurality of frames (hereinafter referred to as an object of interest) using images of a plurality of frames. Specifically, the image of the object of interest in the frame to be displayed at present is displayed as usual, and the image of the object of interest in the past frame is displayed on this image with the transparency increased (the α value is decreased as the past image is displayed). And display composite. This makes it possible to blur and display the trajectory that has moved in the past together with the object of interest in the frame to be displayed at present.
[0003]
On the other hand, when drawing a cell animation using a computer, there is a transmitted light expression. This is a method of expressing transparent light in an animation image on a computer.
[0004]
[Problems to be solved by the invention]
The animation image may have a light emitting area (for example, a light emitting car headlight, a light emitting signboard, a light emitting street display area, or the like). In order to express such a region, it is preferable to display light 202 having transparency (that is, transmitted light) around the region 201 of the light emitter as shown in FIG. This is actually due to the fact that the light emitter appears blurred due to the distance between the observer and the light emitter, the humidity in the air, and the like.
[0005]
The present invention has been made in consideration of such points, and an object of the present invention is to perform blurring processing only on the light emitting region and to express transmitted light around the light emitting region.
[0006]
[Means for Solving the Problems]
In order to achieve the object of the present invention, for example, an image processing program of the present invention comprises the following arrangement.
[0007]
That is, an image processing program for causing a computer to execute image processing on a continuous image composed of a plurality of frames and including a light emitting area,
A blur processing step of performing blur processing on the light emitting area in the image of the frame of interest;
A process of increasing the transparency of the pixels constituting the image of the light emitting area included in the image of the previous frame than the frame of interest is performed, and at the time of the process, the past frame is more transparent than the frame of interest. A transparency control step to increase the amount to be increased;
A synthesis step program for synthesizing the image of each frame processed in the transparency control step with the image of the target frame subjected to the blur processing in the blur processing step,
The image obtained in the synthesis step is displayed on a display unit included in the computer.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Note that the image processing program of the present invention performs blur processing only on a light emitting area (light emitting area) in an animation image. Thereby, the transmitted light can be expressed around the light emitting region, and as a result, the periphery of the light emitting region can be faded with the color of the light emitting region. Further, in the moving image, when the position of the light emitting area in the image changes between the images, the locus of the change in the position is expressed with higher transparency as the past light emitting area. In the following embodiment, a case where the animation image is applied to an image on a game screen will be described, but the present invention is not limited to this.
[0012]
[First Embodiment]
FIG. 1 shows a basic configuration of a game device that executes an image processing program in the present embodiment. FIG. 1 is a block diagram showing a basic configuration of a game device in the present embodiment. Reference numeral 101 denotes a CPU that controls the entire game apparatus using programs, data, and the like stored in the RAM 102 and the ROM 105, and executes image processing to be described later. A RAM 102 has an area for reading a game program 110 and game data 111 (details will be described later) stored in the external storage device 109 , and also has a work area used when the CPU 101 executes various processes. . The RAM 102 also includes a first buffer 102a that functions as a frame buffer that stores a game screen for each frame to be displayed, and a second buffer 102b described later.
[0013]
An operation unit 103 includes an instruction unit 103a for instructing movement of a character or a cursor during the game, and buttons 103b and 103c for inputting instructions such as determination and cancellation. Reference numeral 104 denotes a communication I / F, which functions as an I / F for connecting to another game device via a cable. A ROM 105 stores a program (for example, a boot program for the game apparatus) for controlling the entire game apparatus, data (for example, setting data for the game apparatus), and the like. A display unit 106 includes a CRT and a liquid crystal screen, and displays a screen related to the game (a screen during the game and a screen for performing various settings in the game).
[0014]
A sound processing device 107 generates BGM and sound effects based on sound data included in the game data 111 and outputs the generated BGM and sound effects to the speaker 108. Reference numeral 109 denotes an external storage device configured by a CD-ROM, a ROM cassette, or the like, and stores a game program 110, game data 111, and user data 112. The stored data is read to the RAM 102 as necessary. The game program 110 is a program that controls the entire game.
[0015]
Reference numeral 111 denotes game data, which includes data for generating an image of each object (such as a character and a game field appearing in the game) constituting the game screen, the above-described sound data, and the like. Reference numeral 112 denotes user data, which is data relating to past game results of the player. A bus 113 connects the above-described units.
[0016]
In the game device having the above-described configuration, processing that is performed when a game screen including a light emitting area is displayed on the display unit 106 will be described below. FIG. 3 shows a game screen including a light emitting area. In the figure, 300 is an image of a building. On the other hand, reference numerals 301 to 304 denote building window images, in which an α value is set to a certain value θ or less for display as a light emitting area. It is assumed that a predetermined color is also assigned to each pixel constituting the images 301 to 304 in the light emitting area. Further, it is assumed that the α value is larger than θ for portions other than the images 301 to 304 on the game screen.
[0017]
FIG. 6 shows a flow of processing until the game screen (current frame) shown in FIG. 3 is displayed on the display unit 106. First, the game screen shown in FIG. 3 is drawn in the first buffer 102a and the game screen data (data of each model (car, building, etc.) appearing on the game screen) is referred to. Are copied to the first area 601 of the second buffer 102b, that is, only the areas 301 to 304, ie, the images 301 to 304 are copied. Then, blurring processing (described later) is performed on the image copied to the first area 601 to generate images 301a to 304a in which the images 301 to 304 are blurred. The generated images 301a to 304a are stored in the first area 601.
[0018]
In the second area 602 of the second buffer 102b, processed images (images 301b to 304b) in the previous frame are stored (details will be described later). Therefore, the α value of these images 301b to 304b is lowered (the transparency of the image is increased), transferred to the first area 601, and synthesized with the image stored in the first area 601, thereby blurring between frames. Images 301c to 304c that realize processing (hereinafter referred to as motion blur processing) can be generated.
[0019]
These images 301c to 304c, that is, the image group stored in the first area 601 are transferred to the first buffer 102a and also transferred to the second buffer 102b and the second area 602. In the first buffer 102a, the transferred image group is combined with the images 301 to 304 to generate an image of a building with a window portion. The generated image is displayed on the display unit 106. Also, by transferring the images 301c to 304c to the second area 602, these images 301c to 304c can be used when executing the motion blur processing in the next frame.
[0020]
The above processing is performed for each frame. As a result, blur processing can be performed only on the light emitting area in the game screen, and as a result, transmitted light expression can be realized around the light emitting area, and the light emitting area can be blurred. Further, even when the position of the light emitting area changes in the game screen between the frames, the locus of the change in the position can be expressed with higher transparency as the past light emitting area.
[0021]
Next, the blur process will be described. FIG. 4 shows a pattern used for blur processing.
[0022]
FIG. 5A shows a pattern (pattern 0) that is a basis of processing to be described later, and is composed of a central pixel and four pixels adjacent to the upper, lower, left, and right sides of this pixel. Next, by arranging the same pattern 0 on the left, right, and top with the pattern 0 as a center, the pattern (pattern 1) shown in FIG. Similarly, by arranging the same pattern 1 on the left, right, top and bottom with the pattern 1 as the center, the pattern (pattern 2) shown in FIG. In this way, the pattern (n + 1) is recursively generated by arranging the same pattern n on the left, right, top and bottom with the pattern n as the center.
[0023]
Then, a pattern m (m is an integer of 1 or more) obtained as a result of performing the above recursive processing a predetermined number of times is drawn in the light emitting area. For example, when m = 2 (when the pattern 2 shown in FIG. 2C is used), the pixel at the center of the pattern m (the pixel 401 in FIG. 1C) is arranged at the position of each pixel constituting the light emitting region. Then, a set of patterns 2 constitutes a light emitting area.
[0024]
With reference to FIGS. 5A to 5C, description will be given of a case where blur processing is performed using pattern 1 for an area of 8 pixels × 8 pixels. FIG. 4A is a diagram showing a target region (8 pixels × 8 pixels) to be subjected to blur processing, FIG. 4B is a diagram showing a pattern 1, and FIG. It is a figure which shows the result of having arrange | positioned the pattern 1 for every 2 pixels in the area | region shown in FIG. As shown in FIG. 4C, the area shown in FIG. 1A can be expressed by the density of each pixel constituting the pattern 1, and as a result, the area shown in FIG. Images can be generated.
[0025]
Note that the color of each pixel constituting the pattern used for the blur processing is set to the color of the pixel (the color of the image copied from the first buffer) constituting the light emitting area to be subjected to the blur processing. This makes it possible to blur the light emitting area with the color of the light emitting area. Further, the color of each pixel constituting the pattern used for the blur processing is not limited to this, and a newly set color may be used. In this case, it is not necessary to set a color in advance for the pixels constituting the light emitting area.
[0026]
FIG. 7 shows a flowchart of the above-described image processing (blur processing). The program according to the flowchart shown in FIG. 7 functions as a subroutine of the game program 111 and is executed as necessary.
[0027]
First, a one-frame game screen is drawn in the first buffer 102a (step S701). Next, with reference to the game screen data drawn in the first buffer 102a, an image of an area having an α value equal to or smaller than a certain value θ is transferred to the first area 601 of the second buffer 102b (step S702). ). Then, blur processing is performed on the image group transferred to the first area 601 using the above pattern (step S703). Then, the image group that has been subjected to the blur processing one frame before and stored in the second area 602 of the second buffer 102b is stored in the image group that has been subjected to the blur processing, that is, the first area 601. The image group is synthesized (step S704). Then, the combined image, that is, the image group stored in the first area 601 is combined with the game screen stored in the first buffer 102a (step S705). Then, the game screen generated by the above process and stored in the first buffer 102a is output to the display unit 106 (step S706). When the above process ends, the process returns to the process of the game main body.
[0028]
As described above, the blur processing can be performed only on the light emitting area by the image processing program of the present embodiment, and as a result, transmitted light can be expressed around the light emitting area.
[0029]
[Second Embodiment]
In the first embodiment, for the sake of simplicity, it is assumed that only the image that has been subjected to the motion blur processing one frame before is stored. However, the images that have been subjected to the motion blur processing up to a predetermined number of times are stored. In addition, a smoother motion blur processing result can be obtained by lowering the α value of the past frame images and combining them with the images stored in the first area 601.
[0030]
In addition to the process of lowering the α value, the process of increasing the transparency as the image of the past frame increases, for example, the process of increasing the thinning rate of the pixels constituting the image of the past frame as the image of the past frame. May be used.
[0031]
Further, the buffers used for the series of processes shown in FIG. 6 are not limited to this. For example, in the first embodiment, the first area and the second area are provided in the second buffer 102b. However, for example, the third buffer and the fourth buffer are respectively provided outside the second buffer 102b. May be provided.
[0032]
[Third Embodiment]
The above processing (for example, processing according to part or all of the flowchart shown in FIG. 7) is stored as a program in a storage medium such as a CD-R, ROM, DVD-ROM, or MO, and stored in this storage medium. This computer can perform the above processing by causing the computer to read (install or copy) the program. Therefore, it is clear that this storage medium is also within the scope of the present invention.
[0033]
The image processing described in the above embodiment can also be realized by an image processing apparatus having the following configuration. That is, an image processing apparatus that performs image processing on an image including a plurality of frames and that includes a light emitting area, and that performs blur processing on the image of the light emitting area in the image of the frame of interest. A processing unit; a memory unit that stores an image of a previous frame before the target frame, the image being subjected to blur processing by the blur processing unit; and a transparency control that controls the transparency of the image stored in the memory unit And means for synthesizing the image whose transparency is controlled by the transparency control means with the image subjected to the blur processing by the blur processing means, and the predetermined display means using the image obtained by the synthesizing means as the image of the frame of interest Since the series of processing described in the above embodiment can be performed by an image processing device characterized in that Image processing apparatus including the it is clear that in the scope of the present invention.
[0034]
The image processing described in the above embodiment can also be realized by an image processing apparatus having the following configuration. That is, an image processing device that performs image processing on a continuous image composed of a plurality of frames and including an emission region, the first memory storing the image of the frame of interest, and the first memory A second memory for storing the image of the light emitting area among the images of the attention frame stored; a blur processing means for performing a blur process on the image stored in the second memory; and A third memory for storing an image of a previous frame, which has been subjected to blur processing by the blur processing means, transparency control means for controlling the transparency of the image stored in the third memory, and transparency The image whose transparency is controlled by the control means is subjected to the blur processing by the blur processing means, and is combined with the image stored in the second memory, and the combined image is converted into the third image. First combining means for outputting to the memory, and second combining means for combining the image obtained by the first combining means with the image of the frame of interest stored in the first memory. An image processing apparatus that outputs the image obtained by the means as an image of a frame of interest to a predetermined display unit can perform the series of processes described in the above-described embodiment. It is clear that the device is within the scope of the present invention.
[0035]
【The invention's effect】
As described above, according to the present invention, it is possible to perform the blur process only on the light emitting region and to express the transmitted light around the light emitting region.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a basic configuration of a game device that executes an image processing program according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a light emitting region.
FIG. 3 is a diagram showing a game screen including a light emitting area.
FIG. 4 is a diagram showing patterns used for blur processing.
5A is a diagram showing a target region (8 pixels × 8 pixels) to be subjected to blur processing, FIG. 5B is a diagram showing a pattern 1, and FIG. 5C is a region shown in FIG. It is a figure which shows the result of having arrange | positioned the pattern 1 for every 2 pixels.
6 shows a flow of processing until the game screen (current frame) shown in FIG. 3 is displayed on the display unit 106. FIG.
FIG. 7 is a flowchart of image processing (blur processing) according to the first embodiment of the present invention.

Claims (2)

A continuous image including a plurality of frames, an image processing program for executing the image processing against the image containing the light-emitting region to the computer,
A blur processing step of performing blur processing on the light emitting area in the image of the frame of interest;
A process of increasing the transparency of the pixels constituting the image of the light emitting area included in the image of the previous frame than the frame of interest is performed, and at the time of the process, the past frame is more transparent than the frame of interest. A transparency control step to increase the amount to be increased ;
A synthesis step program for synthesizing the image of each frame processed in the transparency control step with the image of the target frame subjected to the blur processing in the blur processing step,
An image processing program for displaying an image obtained in the synthesis step on a display unit included in the computer . In the blur processing step,
The image processing program according to claim 1, wherein a pattern obtained by recursively arranging a predetermined pattern in a predetermined arrangement is arranged in the light emitting area.

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