JPH04127381A - Image processor for cell animation - Google Patents

Abstract

PURPOSE:To execute the superposition or the separation of a color by only one piece of frame buffer by displaying a color by combination of plural bits, allocating different colors to the respective bits of other plural bits, and also, writing the information for showing whether its coloring exists or not. CONSTITUTION:One picture element 21 is constituted of color display component data 22 constituted of each 8 bits of RGB components, total 24 bits, and a mixing plane 23 constituted of 8 bits for displaying whether coloring exists or not. In such a way, the kind of a color is shown by plural bits for constituting one picture element, and as for other plural bits, different colors are allocated by one color each to the respective bits, and also, with regard to the respective colors, information for showing whether coloring exists or not is written. Accordingly, from the information for showing whether coloring exists or not, which color is set to this picture element, or which color and which color are superposed is known. In such a way, by rewriting the information for showing whether coloring exists or not, a color to be superposed can be changed, and also, only a necessary color can be separated from the superposed color.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an image processing device mainly used for creating images for animation.

(Prior Art) Animation was created by drawing the background, people, trees, etc. separately on each thin vinyl chloride plate called a cell, and by overlapping these pictures to form one screen. Therefore, in order to realize this cell concept with an image processing device, it is necessary to manage several colors independently and to be able to combine and erase each element.

Generally, when performing this with a conventional image processing apparatus, the same number of frame buffers as the number of cells are required.

On the other hand, if you try to combine or delete colors using a single frame buffer, for example, in order to delete only a specified color from a color after coloring, you have to search all the RGB bits that make up the color. Ta.

Here, RGB means the three primary colors of light, and R is Red (
Red), G is Green, B is Blue
means.

However, in general, image processing devices display approximately 16.7 million colors, for example, each pixel uses 8 colors of RGB.
A total of about 24 bits of data is required.

(Problems to be Solved by the Invention) In order to search for one type of color, in the above case, it was necessary to check 24 bits, that is, all bits constituting one pixel. This makes it difficult to process each pixel in real time, and since this means can only manage one type of color for each pixel, it is difficult to know the overlap of colors.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an image processing device for cell animation that can superimpose or separate a plurality of colors using one frame buffer.

(Means for Solving the Problems) In order to solve the above problems, an image processing device for cell animation according to the present invention configures the color of a pixel by a combination of a plurality of bits and a plurality of other bits, A color is represented by a combination of the plurality of bits, a different color is assigned to each of the other plurality of bits, and information indicating the presence or absence of coloring is written, and the above-mentioned color is determined based on the information indicating the presence or absence of coloring. The pixel colors are configured to overlap or separate.

(Function) Multiple bits that make up one pixel represent the type of color,
For the other plurality of bits, each bit is assigned a different color one by one, and information indicating whether or not each color is colored is written.

Therefore, from the information on the presence or absence of coloring, it can be determined which color is set for this pixel, or which color is superimposed on which color.

In other words, by rewriting the information on the presence or absence of coloring, it is possible to change the colors to be superimposed, and it is also possible to separate only the necessary colors from the superimposed colors.

(Example) Hereinafter, an example of the present invention will be described based on the accompanying drawings.

FIG. 1 is a block diagram of an image processing device for cell animation according to the present invention, and FIG. 2 is a block diagram of one pixel.

In FIG. 1, an image processing device W11 for cell animation according to the present invention includes a frame buffer 11 that collects a plurality of pixels to form one picture, and a frame buffer 11 that collects a plurality of pixels to form one picture, and a plurality of bits that represent colors among the bits that constitute the pixels. A data table 12 in which combinations are written, a show element switch 13 and a Ben color switch 14 that control a plurality of other bits indicating the presence or absence of coloring among bits constituting a pixel, and an eraser switch 15 that cancels coloring. A stylus pen 16 for specifying colors and drawing operations, a tablet 17 for inputting the coordinates of pixels specified by the stylus pen 16, and each of the switches 13, 14 from the information obtained by the stylus pen 16 and tablet 17. .15
a controller 18 that controls the frame buffer 11, and a display 19 that displays the image information input to the frame buffer 11.
It is composed of

In FIG. 2, one pixel 21 is an RG displaying color.
It is composed of color display component data 22 composed of 8 bits for each B component, 24 bits in total, and a mixing brain 23 composed of 8 bits that indicates the presence or absence of coloring. Seven of these eight bits are used for coloring. That is, in this embodiment, a case will be described in which coloring is performed using seven colors.

Note that the remaining 1 bit is a bit used for other purposes,
Since this is not directly related to the configuration of the present invention, its explanation will be omitted.

Further, although the explanation will be given using seven colors as an example, it goes without saying that the coloring is not limited to seven colors and that any number of colors can be used within the capacity of the frame buffer 11.

The seven colors are determined in advance, or in this embodiment, they are red, yellow, blue, brown, navy blue, pink, and yellow-green, for example.

FIG. 3 is a block diagram of the mixing brain 23. As shown in the figure, each color is assigned to each bit of the mixing brain 23, and the color display component data 22 of each color is written into the data table 12.

Further, each color is given a display priority, and the color of the most significant bit among the 7 bits is given the first priority.

In this embodiment, the priority order is set so that yellow-green is the highest priority and red is the lowest priority according to the order shown in the figure.

Next, the operation will be explained.

FIG. 4 to FIG. 9 are explanatory diagrams of the operation of each switch.

In FIG. 4, a pen color switch 14 is used to set one of the seven colors, a show element switch 13 is used to display one or more colors, and an eraser is used to cancel coloring. A switch 15 is provided,
It is controlled by a controller 18.

According to the figure, the pen color switch 14 is set to red, and the show element switch 13 is set to red and blue, respectively. Eraser switch 15 is off.

These operations are performed using the stylus pen 16 and the tablet 1.
7 and input each pixel.

(b) Set the specified color.

Sets the specified color to the specified pixel. Eraser switch 1
5 is turned off.

In FIG. 5, for example, when red is specified with the pen color switch 14, 1 is written in the least significant bit of the mixing brain 23 of the pixel specified with the stylus pen 16.

This means that this pixel is set to red.

In FIG. 6, when another color is subsequently designated, for example, when yellow-green is set, 1 is written to the most significant bit of the mixing brain 23 while leaving the previously designated red as is. This means that red and yellow-green are now set for this pixel.

(b) Detect a specified color.

Detects the specified color at the specified pixel.

As shown in FIG. 6, for example, show element switch 1
When red and yellow-green are specified in step 3, these colors can be detected if red and yellow-green are set for this pixel. According to the figure, since 1 is written in the red and yellow-green bits of the mixing brain 23, both red and yellow-green can be detected. Also, if only red is specified with the show element switch 13, only red can be detected, but if, for example, only dark blue is specified, 1 is not written in the dark blue of the mixing brain 23, so dark blue is not set. Can be detected.

(c) Display the specified color.

Displays the specified color at the specified pixel.

As shown in FIG. 7, for example, when a specified pixel is set to red using the pen color switch 14, 1 is written at the bottom of the mixing brain 23, so the show element switch 13 is set to 1 for all seven colors. Assuming that,
This lowest 1 is detected and red is displayed in that pixel. When displaying, red data may be read out from the color display component data 22 written in the data table 12 in advance and written in the area of the color display component data 22 of this pixel on the frame buffer 11. By performing this series of operations, you can draw freely with a red pen.

Next, in FIG. 8, when yellow-green is set to the same pixel using the pen color switch 14, 1 is written to the most significant bit of the mixing brain 23. At this time, if the show element switch 13 is set to 1 for all seven colors, in the case of color display, only the most significant bit of the mixing brain 23 is detected according to the priority order, and the least significant bit is set. This bit is also not displayed. Therefore, in this case, yellow-green will be displayed.

Also, if a certain pixel is displaying yellow-green and red is actually set below it, when the yellow-green and red of the show element switch 13 are set to 1 as described above, If only yellow-green is set to 0, color display component data 22
The yellow-green data will be retained as is, and only red will be displayed instead of yellow-green.

(d) Cancel the setting of the specified color.

For example, assume that one pixel displays either red or yellow-green. After turning on the eraser switch 15, that is, setting it to 1 as shown in FIG.
The red bit of is rewritten from 1 to 0. This will be the same as if the red was erased with an eraser, and the red will no longer be displayed.

That is, when this eraser switch 15 is turned on, the operation is completely opposite to that when specifying a color.

(e) As explained above, data for seven overlapping colors can be extracted independently for each color. Therefore, it can be applied to various functions necessary for animation creation, such as parallel movement of only a specified color and copying of only a specified color from a specified area to another specified area.

Furthermore, since there is no need to add a frame buffer each time the number of colors is increased, costs can be reduced.

Furthermore, since one bit manages one color, RGB
It is only necessary to provide the other bits for the required number of colors, and the number of color bits to be managed can be reduced.

Although the color display component data 22 to be managed is composed of 24 bits in this embodiment, this data 22 can correspond to any color by simply changing the contents.

As shown in FIG. 2, in this embodiment, the number of colors to be managed can be freely determined from one to seven colors. Also, if it is known from the design stage that the number of colors to be managed is 8 or more, it is possible to support any type of color by increasing the bits of the mixing brain 23 other than RGB in one frame buffer. . In this case, instead of increasing the bits of the mixing brain 23, for example, if you reduce the RGB component value bits by 2 bits for a total of 6 bits and transfer these 6 bits to the mixing brain 23, you can increase the number of bits that make up one pixel. You can also increase the number of colors you manage by six.

(Effects of the Invention) The color of one pixel is configured by a combination of a plurality of bits and a plurality of other bits, the color is represented by the combination of the plurality of bits, and the other plurality of bits are the respective bits. By assigning different colors to the pixel and writing information indicating the presence/absence of coloring, and superimposing or separating the colors of the pixels based on the information indicating the presence/absence of coloring, the superposition or separation of colors is This can be done with only one frame buffer.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an image processing device for cell animation according to the present invention, Fig. 2 is a block diagram of one pixel, Fig. 3 is a block diagram of a mixing brain, and Figs. 4 to 9 are operation of each switch. It is a diagram. 1... Image processing device for cell animation according to the present invention, 13... Show element switch, 14...
・Pen color switch, 15...Eraser switch,
22... Color display component data, 23... Mixing brain.

Claims (1)

[Claims] In an image processing device for cell animation in which the color of one pixel is composed of a combination of a plurality of bits and a plurality of these pixels are aggregated to form one frame buffer, the color of the pixel is composed of a combination of the plurality of bits and other bits. configured by a combination of a plurality of bits, the combination of the plurality of bits represents a color, the other plurality of bits assign a different color to each bit, and write information indicating the presence or absence of coloring, An image processing device for cell animation, characterized in that the colors of the pixels are superimposed or separated based on information indicating the presence or absence of coloring.