JPH04190465A - Image processor - Google Patents

Abstract

PURPOSE:To simplify the image processing and quicken the drawing speed by previously storing an arithmetic expression for interpreting and processing a mask pattern with an image and obtaining a result image. CONSTITUTION:A drawing program is stored and respective combinations of interpreting methods for the mask pattern and specified arithmetic and drawing arithmetic expressions regarding the drawing of the result are stored in the table on a main storage device while made to correspond to each other, thereby simplifying the processing for obtaining the result image by superimposing the mask pattern on the original image. A figure shows the inverse (1 0, 0 1) of the binary-coded original image data dst and mask data msk after representation as symbol, the inverse of msr by four kinds of arithmetic. This is stored to obtain a necessary result in a small number of arithmetic steps and the microprocessor processes the result into an image, which is displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image processing device that realizes computer graphics. [Prior Art] FIG. 6 is a block diagram showing a schematic configuration of a conventional image processing device (hereinafter referred to as the conventional device) for realizing computer graphics, and 1 in the figure is the image processing device. The image processing device 1 includes a CRT 2 that displays image processing results.
and the printer 3 that prints this are each connected to a cable 4.
Connected by 5. Main memory 1 of image processing device 1
2b stores a drawing program, and the microprocessor 11c executes the drawing program stored in the main memory 12b to develop an image on the video RAM (VRAM) 13, )
14 converts the image developed on the VRAM 13 into a video signal and displays the figure on the CRT 2. The interface circuit (1/F) 16 controls data input/output between peripheral devices of the image processing device 1 and the image processing device 1 .

Further, each part of the image processing device 1 is connected by an internal bus 15 that transfers data.

In computer graphics, there is a drawing method in which a preset mask pattern is superimposed on the original image to obtain a resulting image.

FIG. 7 is a diagram showing image data resulting from processing a mask pattern superimposed on the original image. Figure 7(a) shows the VRA
FIG. 6 is a diagram showing image data (hereinafter referred to as original data) stored in M13 and a mask pattern to be superimposed on the original data. “0” and “1” in the mask pattern can be interpreted as “0”, “1”, or “as is original data (transparent)” depending on the drawing method of the mask pattern, and the original data can be changed by specifying the interpretation. After converting the data or mask pattern data appropriately,
A predetermined operation (AND,
OR, XOR, etc.).

Set the bits corresponding to “0” in the mask pattern to “0” and “1”
When drawing the result of operations such as AND, OR, and The drawing operation to obtain the mask pattern is "msk", the original data is "dst", and the operation instruction is "(
OP)”, msk (OP) dst =
lI) - formed into a film. In addition, FIG. 7(b) is (OP)
This shows the processing result when =AND.

Also, set the bit corresponding to “θ” of the mask pattern to “1”.
, when drawing the result of an operation between the mask pattern obtained by specifying the bit corresponding to "1" as "0" (that is, the result of bit inversion of the mask pattern) and the original data,
The drawing operation is converted into a film by i'(OP) dst =・(2). In addition, in FIG. 7(C), (OP)=AND
This shows the processing results in the case of .

Furthermore, the bits corresponding to "0" in the mask pattern are left as the original data (that is, transparent), and the bits corresponding to "1" are set to "1", and the obtained mask pattern and the original data are operated. When drawing the result, the drawing operation is (1(AND) dst L (OR) (msk (
AND) (1---1(OP) dat) )...
・(3) It becomes a film. Note that the fourth term "1...1" in equation (3)
means all bits are "1". In addition, Fig. 7(d) is (
This shows the processing result when OP)=AND.

In addition, the bits corresponding to "1" in the mask pattern are left as the original data (that is, transparent), and the bits corresponding to "0" are set to "1", and the obtained mask pattern and the original data are operated. When drawing the result, the drawing operation is (msk (AND) dst ) (OR) (i "(
AND) (1-1(OP) dst) )...(
4) - Formed into a film. In addition, in FIG. 7(e), (OP)=X
It shows the processing result when OR is used.

FIG. 8 shows "0" of the mask pattern as described above.
1 is a flowchart showing a procedure for obtaining drawing calculation formulas ≈ to ∎ to obtain image data as a result by superimposing mask patterns on original data when “1” is interpreted as “0”, “1”, or “transparent”, respectively; Then, classify the cases sequentially according to the interpretation of "0", "1", or "transparent", obtain which of the calculation formulas ■ to ■, execute this calculation formula, and draw the resulting image. Get data. Note that "nap" indicates that no processing is performed.

[Problem to be solved by the invention]

In the conventional image processing apparatus as described above, "0".

It is necessary to divide the cases multiple times depending on how to interpret the mask pattern, such as "1" or "transparent", and obtain the corresponding drawing calculation formula from among calculation formulas ■ to ■. Since it uses a generalized drawing calculation formula,
For example, in the case of a long arithmetic expression such as the expression The problem is that it's slow.

Furthermore, since it is necessary to provide calculation routines for calculation formulas (1) to (2) for each mask pattern interpretation method and type of calculation, there is a problem that the drawing program becomes long and complicated.

The present invention has been made to solve these problems, and includes a method of interpreting a mask pattern and a calculation formula for drawing a resultant image corresponding to the type of calculation, and storing them in advance in a memory. It is an object of the present invention to provide an image processing apparatus that can increase the drawing speed of a mask pattern and simplify the drawing program.

[Means to solve the problem]

The image processing device of the present invention uses a combination of an arithmetic instruction that specifies how to superimpose a mask pattern on an original image and an interpretation of the mask pattern, and data that is converted according to the interpretation of the mask pattern. Arithmetic expressions between data and original image data are stored in advance in correspondence with each other, and the corresponding and stored arithmetic expressions are read out and executed according to the specified operation command and interpretation of the mask pattern. The method is characterized in that drawing data of the resulting image is obtained.

[Effect]

When an arithmetic instruction for determining the interpretation of a mask pattern and how to superimpose the mask pattern on the original image is specified, the image processing device of the present invention immediately executes an arithmetic expression stored in association with these combinations. Read and execute it to get the drawing data for the resulting image.

〔Example〕

Hereinafter, the present invention will be explained based on drawings showing embodiments thereof.

FIG. 1 is a block diagram showing the configuration of an image processing apparatus according to the present invention (hereinafter referred to as the present invention apparatus), and numeral 1 in the figure is the image processing apparatus. A CRT 2 for displaying the results of image processing and a printer 3 for printing the results are connected to the image processing apparatus 1 by cables 4.5, respectively. The main memory 12a of the image processing device 1 stores a drawing program, and also stores in a table 121a a method of interpreting a mask pattern and a drawing calculation formula for each combination of specified calculations and drawing of the resulting image. There is. The microprocessor lla executes the drawing program stored in the main memory 12a while referring to the table 121a to draw the video R.
Expand the image on AM (VRAM) 13 and transfer it to CRT
A controller (CRTC) 14 converts the image developed on the VRAM 13 into a video signal and displays a figure on the CRTZ. An interface circuit (1/F) 16 controls data input/output between the image processing apparatus 1 and peripheral equipment of the image processing apparatus. Further, each part of the image processing device 1 is connected by an internal bus 15 that transfers data.

FIG. 2 is a conceptual diagram showing the storage state of data in the table 121a. Table 121a includes interpretations of “0” and “1” in the mask pattern as “0”, “1”, or “transparent” and four types of operations related to how to superimpose the mask pattern on the original data, “5TORE (original data For each combination of "XOR", "OR", or "AND", the drawing calculation formula between the mask pattern and the original data to obtain the resulting image is described. There is.

For example, to obtain "AND" image data of the mask pattern obtained by specifying the bits corresponding to "0" in the mask pattern as "transparent" and the bits corresponding to "1" as "0" and the original data. By referring to the table 121a, the drawing calculation formula dst (AND) 1-(5) can be immediately determined, so that the desired result can be obtained with a small number of calculation steps. Conventionally, to obtain a similar result, it was necessary to obtain the arithmetic expression (2) through the case division shown in FIG. 8, and then execute the arithmetic expression (2).

FIG. 3 is a flowchart illustrating the procedure of a drawing method using a mask pattern by the apparatus of the present invention. table 1
21a) and executes the drawing operation obtained from the table 121a (S22). table 121
Since the calculation is converted into a drawing calculation by searching for a, there is no need to differentiate between cases depending on the method of interpreting the mask pattern (this makes it possible to speed up the processing and simplify the processing program).

In this embodiment, the table 121a is stored in the main memory 12, but the table 121a is not limited to this; it may be stored in any device that can be accessed by the microprocessor lla.

Further, in this embodiment, calculations between four types of images have been described, but the types of calculations are not limited to four types.

FIG. 4 is a block diagram showing the configuration of another embodiment of the device of the present invention, in which the microprocessor Ilb is a microprocessor having a drawing command that executes calculations by specifying calculations between images as a drawing mode. (example:
M33210) is used.

The microprocessor llb stores an internal register 1llb (R5 in the M33210) that stores the specified drawing mode.
). The other configurations are the same as those of the previous embodiment, and the same parts are given the same reference numerals and the explanation thereof will be omitted.

FIG. 5 is a flowchart illustrating the procedure of the alignment method using the mask pattern according to this embodiment.

The calculation determined by referring to the table 121b is set in the internal register 111b as the drawing mode 523), and the microprocessor llb executes the drawing command 524).
, the drawing data of the resulting image is obtained.

As described above, the microprocessor in this embodiment executes drawing commands (BVMAP command and BVPA command in M33210).
Therefore, there is no need to provide a routine with a different arithmetic expression for each drawing mode, and the desired drawing operation is executed only by the routine that executes the drawing command, resulting in extremely fast drawing speed.

Furthermore, the calculation mode is stored in the internal register (R5) as a numerical value.
Since the calculation mode between images is set to lllb, the calculation mode between images may be converted into a numerical value of the drawing mode to be set in the internal register (R5) lllb and stored in the table 121a of the main memory 12a. In that case, the numerical value obtained as a result of searching the table is used as it is in the internal register (R5
) 1llb, then BVMAP instruction or B
All you have to do is execute the VPAT command.

〔Effect of the invention〕

As described above, the apparatus of the present invention is capable of interpreting mask patterns, performing calculations between images, and converting original image data or mask pattern data according to the interpretation to obtain a resultant image. By storing the mask patterns in advance in association with each other, when the mask pattern is superimposed on the original image to obtain the resulting image, the calculation to draw the resulting image can be executed immediately, resulting in faster drawing speed. Further, there is no need to provide a calculation routine for each combination of a mask pattern interpretation method, an inter-image calculation, and a calculation formula related to drawing, which has the excellent effect of simplifying the drawing program.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of the device of the present invention, FIG. 2 is a conceptual diagram showing the storage state of the table, FIG. 3 is a flowchart explaining the drawing procedure by the device of the present invention, and FIG. 4 is a diagram of the device of the present invention. A block diagram showing the configuration of another embodiment, FIG. 5 is a flowchart explaining the drawing procedure according to another embodiment of the device of the present invention, FIG. 6 is a block diagram showing the configuration of the conventional device, and FIG. FIG. 8 is a conceptual diagram showing the data of the drawing result, and is a flowchart explaining the drawing procedure by the conventional apparatus. 1... Image processing device 2... CRT 8... Printer 11a, 1.1b... Microprocessor
12a... Main memory 13... VRAM 14...
CRTC16...I/F121a...Table 1
11b...Internal register In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] (1) When obtaining a resultant image by superimposing a mask pattern whose data structure is determined in advance and the interpretation of the data is variable at the time of drawing, on the original image, the data of the mask pattern or the original In an image processing device that converts data of an image and uses the converted data to obtain a resulting image, a combination of an arithmetic instruction that specifies how to superimpose a mask pattern on the original image and the above interpretation, and a conversion based on the interpretation. storage means for storing arithmetic expressions between mask pattern data and original image data in association with each other using the data to be processed; means for specifying the arithmetic instruction; and means for specifying an interpretation of the mask pattern. And, depending on the interpretation of the specified operation instruction and mask pattern,
An image processing apparatus comprising: means for reading a corresponding arithmetic expression from the storage means and executing it.