JPH0711829B2 - Color mixing processing controller - Google Patents

Description

The present invention relates to a color mixing processing control device that performs color mixing processing using a predetermined weighting pattern and reference pixel data in a specified range on image data, and particularly to partial image data in a specified range. Concerning the technology for efficiently specifying each address of the weight pattern and the weight pattern, by providing a buffer for aligning the read addresses of the partial image data and the weight pattern, the address control of the color mixing processing unit is simplified and the processing speed is improved. Image storage means for storing image data, a partial image buffer for storing partial image data, and a weight pattern buffer for storing a weight pattern that is a set of weight data corresponding to each pixel of the partial image data. And partial image data in the specified address range of the image data in the image storage means and the corresponding weight pattern. First transfer control means for writing a turn into the same address range as the designated address range of the partial image buffer and the weight pattern buffer, and the same address on the partial image buffer and the weight pattern buffer are designated. A second transfer control means for reading out the partial image data and the corresponding weighting pattern for each address within the specified address range, and 1 in addition to the read out partial image data and each weighting data of the weighting pattern. And a color mixing processing unit for inputting one reference pixel value and calculating color mixing data corresponding to each pixel of the partial image data.

Further, an image storage unit that stores image data, a partial image buffer that stores partial image data, a weight pattern buffer that stores a weight pattern that is a set of weight data corresponding to each pixel of the partial image data, and the image. The partial image data in the designated address range of the image data of the storage means and the weighting pattern corresponding to the partial image data have the same size as the designated address ranges of the partial image buffer and the weighted pattern buffer, respectively, and reference to a predetermined address. Third transfer control means for writing in the address range
A fourth address is designated by designating the same address on the partial image buffer and the weight pattern buffer, and reading out the partial image data and the corresponding weight pattern for each address within an address range based on the predetermined address. Color control for inputting one reference pixel value in addition to the read partial image data and each weight data of the weight pattern, and calculating color mixture data corresponding to each pixel of the partial image data. And processing means.

Further, an image storage unit that stores image data, a partial image buffer that stores partial image data, and a weight pattern buffer that stores a weight pattern and a mask pattern that are a set of weight data corresponding to each pixel of the partial image data. A mask pattern buffer, partial image data in a specified address range of the image data of the image storage means, and a weight pattern and a mask pattern corresponding to the partial image data,
Fifth transfer control means each having the same size as the specified address range of the partial image buffer, the weight pattern buffer, and the mask pattern buffer, and writing to an address range based on a predetermined address, and the partial image. The same address on the buffer, the weight pattern buffer, and the mask pattern buffer is designated, and the partial image data and the corresponding weight pattern and mask pattern for each address within the address range based on the predetermined address are designated. Sixth transfer control means for reading,
In addition to the read partial image data and each weight data of the weight pattern and the mask pattern, one reference pixel value is input, and a color corresponding to each pixel that is not masked by the mask pattern in the partial image data. And a color mixing processing means for calculating the mixed data.

[Industrial application field]

The present invention relates to a color mixing processing control device for performing color mixing processing using a predetermined weighting pattern and reference pixel data in a specified range on image data, and particularly to partial image data in the specified range and each address of the weighting pattern. Technology related to efficient designation.

[Conventional technology]

When processing digital image data transmitted by facsimile or the like, it may be necessary to correct the image data. Such a case frequently occurs, for example, in a newspaper company at the stage of printing the photographic data transmitted from the branch office.

In such a case, conventionally, digital image data is once printed, manually corrected, and sent to a formal printing process. However, this kind of work requires a lot of skill, and since it is necessary to print and then make corrections, much work is required.

On the other hand, recently, a technique for electronically correcting digital image data has been proposed, which is called color mixing (airbrush) processing. By using this processing, for example, when there is a digital image pattern as shown by the shaded area 1 in FIG. 4, the user designates the range indicated by the square 2 and the boundary portion between the shaded area 1 and the background 3 in that area. It is possible to perform processing that blurs the sharpness of the.

FIG. 5 shows the principle of the color mixing process. First, in a range shown by a square 2 in FIG. 4, for example, digital image data of 5 pixels × 5 pixels as shown in FIG.
(Called partial image data). Here, the number of each pixel represents the brightness value when the minimum brightness is 0 and the maximum brightness is 255. In practice, the brightness value of 256 gradations is expressed for each pixel by giving a digital value of 1 byte (8 bits) for each pixel. In the case of FIG. 5 (a), the part of the brightness "200" (1st line ~
The third line) corresponds to the pattern 1 portion in FIG. 4, and the lightness "20" portion (fourth and fifth rows) corresponds to the background 3 portion.

Now, for each pixel of the partial image data of FIG. 5 (a), a weight pattern, which is a set of weight data that can take a value between 0 and 1 as shown in FIG. 5 (b), is prepared. To do.
In this case as well, in reality, each pixel is represented by a digital value of 1 byte (8 bits). Furthermore,
A reference pixel value is prepared. This is, for example, the fifth
It is data of lightness values such as a value "90" near the middle of the lightness "200" of the pattern portion and the lightness "20" of the background portion in FIG.

Then, between the above-mentioned reference pixel value, each partial pixel data of FIG. 5A, and each weight data of the weight pattern of FIG. To find the quantity.

Color mixing data = partial image data + (reference pixel value−partial image data) × weight data (1) Based on the above equation (1), 1 to 1 in FIGS.
The color mixing data for the fifth line is as follows.

1st line: 200 + (90-200) x 0 = 200 2nd line: 200 + (90-200) x 0.5 = 145 3rd line: 200 + (90-200) x 1 = 90 4th line: 20 + (90- 20) × 0.5 = 55 5th line: 20+ (90−20) × 0 = 20 By the above calculation, the color mixture data shown in FIG. 5 (c) corresponding to the partial image data of FIG. 5 (a). Can be obtained. As can be seen from this, while the boundaries are clearly separated in the third and fourth lines of FIG. 5 (a),
In FIG. 5 (c), the lightness gradually changes from the first line to the entire fifth line, and the boundary is blurred. Therefore, by replacing the part of the square 2 in FIG. 4 with this color mixture data, the boundary between the pattern 1 and the background 3 in FIG. 4 can be blurred at that part.

At this time, various color mixing processes can be performed by preparing patterns having various numbers of pixels as the weighting pattern of FIG. 5B, and preparing various kinds of patterns and reference pixel values. For example, as shown in FIG. 6, if a weighting pattern is prepared such that the weight becomes smaller as it spreads radially, color mixing processing that blurs the periphery of the circular pattern is possible.

In addition, this processing is applied to R, G, and B of color image data.
By performing the processing for each piece of image data, it is possible to perform color color mixing processing.

FIG. 7 shows a configuration diagram of a conventional example for performing the color mixing process. First, in the image memory 6 consisting of three sheets of R, G, B,
Color image data for one sheet (brightness values for each of R, G, and B) is stored and displayed arbitrarily on the image display unit 7.

While observing this display, the user designates the area 18 (corresponding to FIG. 4) of the R image on the image memory 6 from the tablet 8.

As a result, the read control unit 9 controlled by the processor 11 in the image control device 4 transfers the data of the R image area 18 in the image memory 6 to the R image in the partial image data buffer 10 consisting of R, G, and B. The partial image data 19 (corresponding to FIG. 5 (a)) is read into the address corresponding to. In this case, the address range of the area 18 on the image memory 6 and the address range of the partial image data 19 on the partial image data buffer 10 are the same address range.

Next, the weight pattern 20 corresponding to the partial image data 19
(Corresponding to FIG. 5 (b)) is selected from a memory (not shown) in the host computer 5, and is sequentially read from a specific reference address A in the weight pattern memory 12. As described in FIG. 5B, the weighting pattern 20 is 1 byte (8 bits) that can take a value between 0 and 1 for each pixel.
Is a set of weight data of.

Similarly, the reference pixel value 21 (see the description of FIG. 5) is selected from the host computer 5 and read into the reference pixel value memory 13.

Furthermore, the mask data 22 corresponding to the partial image data 19
Similarly, it is selected from the host computer 5 and read into the mask data memory 14. The mask data designates whether or not to perform image processing (here, color mixing processing) for each pixel corresponding to each pixel of the image memory 6 by 1-bit data of "0" or "1". Is.

After the above operation, the processor 11 makes the partial image data buffer
10 to partial image data 19, weight pattern memory 12 to weight pattern 20, reference pixel value memory 13 to reference pixel value
21 from the mask data memory 14 and the mask data 22 from the mask data memory 14 to the color mixing processing unit 15 one pixel at a time. This allows
In the processing unit 15, the color mixing process described in FIG. 5 and the equation (1) is performed, and the color mixing data obtained thereby is obtained.
23 is written in the same address range as the area 18 of the image memory 6 on the color mixed data buffer 16 consisting of R, G and B.

After that, the light control unit controlled by the processor 11
17 transfers the color mixed data 23 in the color mixed data buffer 16 to the image memory 6 and rewrites the area 18 portion. The result is displayed on the image display unit 7.

[Problems to be solved by the invention]

However, in the case of the conventional example of FIG. 7, the partial image data buffer
The partial image data 19 read into 10 and the mask data 22 read into the mask data memory 14 both have the same address range as the address range of the area 18 on the image memory 6, while the weight pattern memory 12 The address range of the weight pattern 20 to be read is a range starting from a specific reference address A, which is different from the above address range. The addressing is performed in this way because the weighting pattern 20 may be repeatedly used for different partial image data 19. Therefore, when the color mixing processing unit 15 reads each of the partial image data 19, the mask data 22, and the weighting pattern 20, the addressing of the weighting pattern 20 is different from other addressing, so that the address control in the processing unit is complicated. Therefore, there is a problem that the processing becomes slower by that amount.

In order to solve the above problems, the present invention simplifies the address control of the color mixing processing unit and improves the processing speed by providing a buffer for aligning read addresses such as partial image data and weight patterns. It is an object of the present invention to provide a color mixing processing control device capable of

[Means for solving problems]

FIG. 1 (a) shows a first block diagram of the present invention. The first transfer control means 27 writes the partial image data 30 in the designated address range of the image data in the image storage means 26 in the same address range as the designated address range in the partial image buffer 25.

Similarly, the first transfer control means 27 uses the weight pattern which is a set of weight data corresponding to each pixel of the partial image data 30 in the same address range on the weight pattern buffer 26.
Write 31.

Next, the second transfer control means 28 designates the same address on the partial image buffer 25 and the weight pattern buffer 26,
The partial image data 30 and the corresponding weight pattern 31 for each address within the specified address range are read.

The color mixing processing means 29 uses the read partial image data 30
In addition to each weight data of the weight pattern 31, one reference pixel value 32 is input, and the color mixture data 33 corresponding to each pixel of the partial image data 30 is calculated. The color mixture data is calculated, for example, by an arithmetic expression: color mixture data = partial image data + (reference pixel value−partial image data) × weight data (1).

The color mixture data 33 calculated in this way is written back to the corresponding portion on the image storage means 24 as needed.

Next, FIG. 1 (b) is a second block diagram of the present invention. The third transfer control means 35 converts the partial image data 30 in the designated address range out of the image data on the image storage means 24,
Writing is performed in an address range having the same size as the specified address range on the partial image buffer 25 and having a predetermined address 38 as a reference.

Similarly, the third transfer control means 35 writes the weight pattern 31, which is a set of weight data corresponding to each pixel of the partial image data 30, in the same address range as above on the weight pattern buffer 26.

Next, the fourth transfer control means 36 designates the same address on the partial image buffer 25 and the weight pattern buffer 26,
The partial image data 30 and the corresponding weight pattern 31 for each address within the address range based on the predetermined address 38 are read.

The color mixing processing means 29 uses the read partial image data 30
In addition to each weight data of the weight pattern 31, one reference pixel value 32 is input, and the color mixture data 33 corresponding to each pixel of the partial image data 30 is calculated.

In FIG. 1 (b), when there is a mask pattern corresponding to the partial image data 30, a fifth transfer control means 39 instead of the third transfer control means 35 is used as the predetermined pattern on the mask pattern buffer 34. A means for writing the mask pattern 37 in the address range based on the address 38 is added.

In this case, instead of the fourth transfer control means 36, the sixth transfer control means 40 is used, and the partial image data 30 and the weight pattern
In addition to the operation of reading 31, a means for reading the mask pattern 37 from the mask pattern buffer 34 is added.

As a result, in the color mixing processing means 29, the mask pattern 37
Thus, the color mixture data 33 corresponding to each pixel of the unmasked partial image data 30 is calculated.

The color mixture data 33 calculated as described above is written back to the corresponding portion on the image storage means 24 as necessary.

[Action]

In FIGS. 1A and 1B, the partial image buffer 2
5, partial image data 30 written in the weight pattern buffer 26 and the mask pattern buffer 34, the weight pattern
31 and the mask pattern 37 have the same address. Therefore, when the second, fourth, or sixth transfer control means 28, 36, 40 reads the above data pixel by pixel and transfers it to the color mixing processing means 29, the same address may be designated. The address control becomes simple and the color mixing process becomes faster.

〔Example〕

Hereinafter, examples of the present invention will be described in detail. FIG. 2 is a block diagram of the first embodiment of the present invention. Components corresponding to those of the conventional example shown in FIG. 7 are designated by the same reference numerals. 7th
The difference from the conventional example in the figure is that the output of the weight pattern memory 12 is input to the color mixing processing unit 15 via the weight pattern buffer 41. The operation of the first embodiment shown in FIG. 2 will be described below.

First, the image memory 6 consisting of three sheets of R, G, and B stores color image data for one sheet (brightness value for each of R, G, and B), which is arbitrarily displayed on the image display unit 7. To be done.

While observing this display, the user designates, for example, the area 18 (corresponding to FIG. 4) of the R image on the image memory 6 from the tablet 8.

As a result, the read control unit 9 controlled by the processor 11 in the image control device 4 converts the data of the R image area 18 in the image memory 6 into the R image in the partial image data buffer 10 consisting of R, G, and B. Partial image data at the corresponding address
It is read as 19 (corresponding to FIG. 5 (a)). in this case,
The address range of the area 18 on the image memory 6 and the address range of the partial image data 19 on the partial image data buffer 10 are the same address range.

Next, the weight pattern 20 corresponding to the partial image data 19
(Corresponding to FIG. 5 (b)) is selected from a memory (not shown) in the host computer 5, and is sequentially read from a specific reference address A in the weight pattern memory 12. As described in FIG. 5B, the weighting pattern 20 is 1 byte (8 bits) that can take a value between 0 and 1 for each pixel.
Is a set of weight data of.

Similarly, the reference pixel value 21 (see the description of FIG. 5) is selected from the host computer 5 and read into the reference pixel value memory 13.

Furthermore, the mask data 22 corresponding to the partial image data 19
Similarly, it is selected from the host computer 5 and read into the mask data memory 14.

Here, the weight pattern 20 on the weight pattern memory 12 is
It is often used repeatedly for different partial image data 19. Therefore, every time the partial image data 19 is read into the partial image data buffer 10, the processor 11
Writes the weight pattern 20 on the weight pattern memory 12 to the same address range as the address range of the area 18 on the image memory 6 on the weight pattern buffer 41.

After the above operation, the processor 11 makes the partial image data buffer
10, weight pattern buffer 41, and mask data memory
The same address is designated as 14, the partial image data 19, the weight pattern 20, and the mask data 22 are read out pixel by pixel and transferred to the color mixing processing unit 15. As a result, the processing unit
In FIG. 15, the color mixing processing described with reference to FIG. 5 and the equation (a) is performed, and the color mixing data 23 obtained by the processing is changed to R, G,
It is written in the same address range as the area 18 of the image memory 6 on the color mixture data buffer 16 made of B.

After that, the light control unit controlled by the processor 11
17, the color mixed data 23 in the color mixed data buffer 16,
The data is transferred to the image memory 6 and the area 18 is rewritten. The result is displayed on the image display unit 7.

In the embodiment of FIG. 2, the storage address of the weight pattern 20 in the weight pattern buffer 41 is matched with the storage addresses of the partial image data 19 and the mask data 22. Therefore, the address control when the processor 11 reads the partial image data 19, the weight pattern 20, and the mask data 22 to the color mixing processing unit 15 can be simplified, and the processing speed can be improved. Since the processing of transferring the weight patterns 20 from the weight pattern memory 12 to the weight pattern buffer 41 is performed collectively, a comparison is made with the case of the conventional example of FIG. 7 in which address control is performed at the time of input to the color mixing processing unit 15. The processing speed is fast.

Next, FIG. 3 is a configuration diagram of a second embodiment of the present invention.
Also in this case, the corresponding parts to the conventional example of FIG. 7 are indicated by the same numbers. In this embodiment, the output from the mask data memory 14 is input to the color mixing processing section 15 via the mask data buffer 42 as compared with the conventional example shown in FIG. The operation of the second embodiment shown in FIG. 3 will be described below.

First, the image memory 6 consisting of three sheets of R, G, and B stores color image data for one sheet (brightness value for each of R, G, and B), which is arbitrarily displayed on the image display unit 7. To be done.

While observing this display, the user designates the area 18 (corresponding to FIG. 4) of the R image on the image memory 6 from the tablet 8.

As a result, the read control unit 9 controlled by the processor 11 in the image control device 4 converts the data of the R image area 18 in the image memory 6 into the R image in the partial image data buffer 10 consisting of R, G, and B. Partial image data 19 (corresponding to FIG. 5A) is read at an address starting from a specific reference address A.

Next, the weight pattern 20 corresponding to the partial image data 19
(Corresponding to FIG. 5 (b)) is selected from a memory (not shown) in the host computer 5 and written in order from the same specific reference address A as the reference address A in the weight pattern memory 12. The weight pattern 20 is shown in FIG. 5 (b).
As described above, it is a set of 1-byte (8-bit) weight data that can take a value between 0 and 1 for each pixel.

Similarly, the reference pixel value 21 (see the description of FIG. 5) is selected from the host computer 5 and read into the reference pixel value memory 13.

Furthermore, the mask data 22 corresponding to the partial image data 19
Similarly, it is selected from the host computer 5 and read into the mask data memory 14.

Here, if the mask data on the mask data memory 14 corresponding to one sheet of the image memory 6 is read at once, then only the mask data 22 of the portion corresponding to the partial image data 19 can be read out. Good. Therefore, every time the partial image data 19 is read into the partial image data buffer 10, the processor 11 sets the mask data 22 in the mask data memory 14 to the reference address A of the weight pattern memory 12 or the like in the mask data buffer 42. Same reference address A
Move to the address range starting from and write.

After the above operation, the processor 11 makes the partial image data buffer
10, weight pattern memory 12, and mask data buffer
The same address is designated as 42, the partial image data 19, the weight pattern 20, and the mask data 22 are read out pixel by pixel and transferred to the color mixing processing unit 15. As a result, the processing unit
In FIG. 15, the color mixing processing described with reference to FIG. 5 and the equation (1) is performed, and the color mixing data 23 thus obtained is R, G,
It is written in the same address range as the area 18 of the image memory 6 on the color mixture data buffer 16 made of B.

After that, the light control unit controlled by the processor 11
17, the color mixed data 23 in the color mixed data buffer 16,
The data is transferred to the image memory 6 and the area 18 is rewritten. The result is displayed on the image display unit 7.

In the embodiment of FIG. 3, the storage address of the mask data 22 in the mask data buffer 20 is matched with the storage addresses of the partial image data 19 and the weight pattern 20. Therefore, the address control when the processor 11 reads the partial image data 19, the weight pattern 20, and the mask data 22 to the color mixing processing unit 15 can be simplified, and the processing speed can be improved. Here, the mask data 22 moved from the mask data memory 14 to the mask data buffer 42 is 1
Since it is a set of bit data, the transfer can be performed at high speed.

In addition, in the color mixing processing unit 15 in FIG.
When 22 is not required, the processing of the mask data memory 14 and the mask data buffer 42 is omitted, so that higher speed processing is possible.

〔The invention's effect〕

According to the present invention, when the partial image data, the weight pattern, and the mask pattern are read into the color mixing processing unit, the same address designation is sufficient, which simplifies address control.
It is possible to improve the processing speed of the color mixing processing.

[Brief description of drawings]

FIG. 1 (a) is a first block diagram of the present invention, FIG. 1 (b) is a second block diagram of the present invention, and FIG. 2 is a configuration diagram of a first embodiment of the present invention. 3 is a block diagram of the second embodiment of the present invention, FIG. 4 is a relationship diagram of image data and color mixing processing, and FIGS. 5 (a), (b), and (c) are color diagrams. 6 is an explanatory diagram of the mixing process, FIG. 6 is another configuration diagram of the weighting pattern, and FIG. 7 is a configuration diagram of a conventional example. 24 ... Image storage means, 25 ... Partial image buffer, 26 ... Weight pattern buffer, 27 ... First transfer control means, 28 ... Second transfer control means, 29 ... Color mixing processing means, 30 ...... Partial image data, 31 …… Weight pattern, 32 …… Reference pixel value, 33 …… Color mixture data, 34 …… Mask pattern buffer, 35,39 …… Third (fifth) transfer control means, 36 , 40 ... Fourth (sixth) transfer control means, 37 ... Mask pattern, 38 ... Predetermined address.

Claims (9)

[Claims] 1. Image storage means (24) for storing image data
And a partial image buffer (25) that stores partial image data
A weight pattern buffer (26) for storing a weight pattern, which is a set of weight data corresponding to each pixel of the partial image data, and partial image data (a) of the designated address range among the image data of the image storage means (24) ( A first transfer control means (27) for writing the weighting pattern (30) and the weighting pattern (31) corresponding thereto in the same address range as the specified address range of the partial image buffer (25) and the weighting pattern buffer (26), respectively. The same address on the partial image buffer (25) and the weight pattern buffer (26) is designated, the partial image data (30) and the corresponding weight pattern (30) for each address within the designated address range. Second transfer control means (28) for reading out 31), and one in addition to the read out weight data of the partial image data (30) and weight pattern (31) Reference pixel value of (32)
And a color mixture processing means (29) for calculating color mixture data (33) corresponding to each pixel of the partial image data (30).
A color mixing processing control device comprising: 2. The color mixing processing means (29) calculates color mixture data = partial image data + (reference pixel value−partial image data) × weight data (1) for each pixel. , Partial image data (30)
2. The color mixing processing control device according to claim 1, wherein the color mixing data (33) corresponding to each pixel is obtained. 3. The partial image data (30) is processed for each of R, G and B colors.
The color mixing processing control device according to any one of the items 1 and 2. 4. An image storage means (24) for storing image data.
And a partial image buffer (25) that stores partial image data
A weight pattern buffer (26) for storing a weight pattern, which is a set of weight data corresponding to each pixel of the partial image data, and partial image data (a) of the designated address range among the image data of the image storage means (24) ( 30) and the weighting pattern (31) corresponding to the same, and have the same size as the specified address range of the partial image buffer (25) and the weighting pattern buffer (26), respectively, and use a predetermined address (38) as a reference. Third transfer control means (3
5), the partial image buffer (25) and the same address on the weight pattern buffer (26) are designated, and the partial for each address in the address range based on the predetermined address (38) is specified. Fourth transfer control means for reading out the image data (30) and the corresponding weighting pattern (31), and one in addition to the respective weighting data of the read out partial image data (30) and the weighting pattern (31) Reference pixel value (32)
And a color mixture processing means (29) for calculating color mixture data (33) corresponding to each pixel of the partial image data (30).
A color mixing processing control device comprising: 5. The partial image data is obtained by the color mixture processing means (29) performing an operation of color mixture data = partial image data + (reference pixel value−partial image data) × weight data for each pixel. (30)
5. The color mixing processing control device according to claim 4, wherein the color mixing data (33) corresponding to each pixel is obtained. 6. The partial image data (30) is processed for each of R, G and B colors.
Item 5. The color mixing processing control device as described in any one of the items 5 and 5. 7. Image storage means (24) for storing image data
And a partial image buffer (25) that stores partial image data
A weight pattern buffer (26) and a mask pattern buffer (34) respectively storing a weight pattern and a mask pattern, which are a set of weight data corresponding to each pixel of the partial image data, and an image of the image storage means (24). Of the data, the partial image data (30) in the specified address range and the corresponding weight pattern (31) and mask pattern (37) are respectively input to the partial image buffer (25) and the weight pattern buffer (2).
6) and a predetermined address (3) having the same size as the specified address range of the mask pattern buffer (34).
The fifth transfer control means (39) for writing in the address range based on 8), the same address on the partial image buffer (25), the weight pattern buffer (26) and the mask pattern buffer (34) A sixth transfer for reading out the partial image data (30) and the corresponding weight pattern (31) and mask pattern (37) for each address in the address range that is designated and has the predetermined address (38) as a reference Control means (4
0), the reference pixel value (32) in addition to each of the read weight data of the partial image data (30) and the weight pattern (31) and the mask pattern (37). (30) Color mixing processing control device (29) for calculating color mixing data (33) corresponding to each pixel not masked by the mask pattern (37) . 8. The partial image data is obtained by the color mixing processing means (29) performing an operation of color mixture data = partial image data + (reference pixel value−partial image data) × weight data for each pixel. (3
8. The color mixing processing control device according to claim 7, wherein the color mixing data (33) corresponding to each pixel of (0) is obtained. 9. The partial image data (30) is processed for each of R, G and B colors.
Item 9. The color mixing processing control device as described in any one of the items 8 and 8.