JPH07154582A - Color image edit device - Google Patents

Abstract

PURPOSE:To realize an edit block with a simple configuration by applying edit processing of coloring and monochromatic color conversion to color compo nent image information when the information is converted into recording image information for each recording color. CONSTITUTION:An image read means 1 analyzes colors of a sourse document image and reads the analyzed colors, and they are given to an image processing means 2, in which the result is converted into color information for each desired color component. An edit content designation means 3 designates an edit content and an edit signal generating means 4 generates an edit signal by the designation. An image edit means 5 edits the image from color information from the means 2. In this case, a color information setting means 6 sets color information designated by the means 3 to the means 5. Then the means 1 inputs image data of, e.g. R, G, B signals to the means 2 and image data of Y, M, C, K signals to the means 5. Then the means 5 implements edit processing by an edit processing block provided to each color component to provide an output of image data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image editing apparatus for a digital color copying machine or the like, and more particularly to reading an original image with a scanner, color-separating and extracting image information for each of a plurality of color components. The present invention relates to a color image editing apparatus that performs editing processing such as coloring and mono-color conversion in an image processing apparatus that converts and outputs recorded image information for each recording color.

[0002]

2. Description of the Related Art Conventionally, an original image is read by a scanner,
An image processing apparatus that performs color separation to extract image information for each of a plurality of color components, converts the color component image information into recording image information for each recording color, and outputs the information, and performs editing processing such as coloring and monocolor conversion. As a color image editing device to perform,
A one-drum type color copying machine is known. FIG. 11 is a block diagram of a conventional 1-drum type color copying machine. In the figure, image editing such as color conversion, coloring, and filling of the read image signal is performed by the first image editing block 104, and image editing of mono-color conversion is performed by the second image editing block 109. The image reading unit 101 reads an original image with a scanner, color-separates the read signal, and outputs it as color information of red (R), green (G), and blue (B). The color information of red (R), green (G), and blue (B) is A / D converted and input to the first color signal conversion unit 102 as an 8-bit digital signal, for example. The first color signal conversion means 102 converts the R, G, B signals into the lightness signal L.
*, Color difference signals a *, b *, and converted into third color signal conversion means 103, first image editing block 104, and delay means 1.
Enter in 06. The third color signal conversion means 103 uses a *,
The color difference signal of the b * signal is converted into a hue signal H and a saturation signal C and input to the first image editing block 104. The first image editing block 104 processes the lightness signal L * from the first color signal conversion means 102 and the hue signal H and the saturation signal C from the third color signal conversion means 103 to perform color conversion and coloring. Perform image editing such as filling. The image-edited hue signal H and saturation signal C are converted into color difference signals a * and b * in the fourth color signal conversion means 105, and the luminance signal V (L * from the first image editing block 104 is obtained. ) Is input to the selector 107. In addition, the selector 107 has
The lightness signal L * and the color difference signals a * and b * from the first color signal conversion means 102 are input by the delay means 106 at the same timing as the signals passed through the first image editing block 104. That is, the delay unit 106 generates a delay amount required for image editing processing. The selector 107 switches between the edited and processed image signal and the unprocessed image signal by SCONT from the first image editing block 104, and outputs the switched image signal to the second color signal conversion means 108. The second color signal conversion means 108 converts the L *, a *, and b * signals into yellow (Y), magenta (M), cyan (C), and black (K) color component signals to edit the second image. Block 1
Enter in 09. The second image editing block 109 is Y,
The M, C and K signals are processed to perform mono color conversion or the like. Then, the image output means 110 includes the second image editing block 1
Based on the Y, M, C, and K color component signals from 09, an image is recorded on recording paper and output. Here, the first image editing block 104 and the second image editing block 109
Is a control signal C output from the edit signal generating means 111.
It is controlled by _{0 to} C ₂ .

Next, the first image editing block 104 and the second image editing block 109 will be described. First, a conventional technique in the first image editing block 104 will be described. FIG. 12 is a block diagram of a conventional first image editing block. FIG. 12 shows a configuration in which only the portion of the first image editing block 104 to be colored and filled is extracted. Color palette 201
Is a part for setting a color for coloring and painting, and the set value is set by lightness (L *), hue (H), and saturation (C). The threshold value register 202 is for setting a threshold value of brightness (L *) in advance,
The comparator 203 compares the lightness signal L * from the first color signal conversion means 102 with the threshold value of the threshold value register 202. The comparison result is the OR gate circuit 204 and the AND
The gate circuit 205 outputs a signal of SCONT according to the control signals C ₀ and C ₁ . At this time, the edit mode includes the following plain mode, coloring mode, and fill mode, which are selected by the control signals C ₀ , C _1, and SCONT.

[Transparent Mode] In the plain mode, a plain lightness signal L * and color difference signals a * and b * that are not edited are output to the selector 107.
This is the case where C ₁ of the control signal to the first image editing block 104 is “0”. [Coloring Mode] When C _{1 of the} control signal is “1” and C ₀ of the control signal is “0”, SCONT is “1”, and when the lightness L * is brighter than the threshold value, it is transparent or dark. In this case, the color set in the color palette 201 is the selector 10
It is output from 7. [Fill mode] Furthermore, the control signal C ₁ "1", the control signal C ₀ When "1" is sent SCONT is "1"
Then, the color set in the color palette 201 is always output from the selector 107, and the fill editing is performed. By the way, in the case of the above-mentioned coloring editing, the coloring portion and the plain portion are separated by the threshold value of the lightness L *, but when the spatial frequency resolution of the image reading means 101 is low, the actual thin line is shown in FIG. In some cases, only a blunted luminosity output is obtained for the luminosity distribution. In such a case, white spots and the like occur around the black characters, and the image quality is significantly deteriorated. To deal with this, especially when generating Y, M, C color components for coloring and editing a black-and-white document,
By sending "1" to the control signals C ₀ and C ₁ to make it a filled-up edit, and sending "0" to C ₁ when the K color component is generated to let it pass through, making it appear as if it was a colorized edit, making it appear as black characters. It may be devised so as to obtain a high-quality image without white spots around.

Next, a conventional technique in the second image editing block 109 will be described. FIG. 14 is a block diagram of a conventional second image editing block. In FIG. 14, 401 is a multiplier, and the multiplication coefficient is "0 to 1.00.
A value of 0 "can be set in advance. Further, 402 is a selector. With this configuration, when an attempt is made to perform mono color conversion, the lightness signal L * is always output by the second signal converting means.
Is set to be output. Further, it is set to send “1” to C ₂ of the control signal from the edit signal generation unit 111. Here, every time the color component generation is performed four times in synchronization with the reading operation of the image reading unit 101, the multiplier 401 is provided with a multiplication coefficient according to the ratio of the desired mono-color color components Y, M, C, K. If set, the desired mono-color conversion is performed.

[0006]

However, when the above-described technique for a one-drum type color copying machine is applied to a four-drum type digital color copying machine for the purpose of high productivity, it is generally used. The image processing unit outputs the yellow, magenta, cyan, and black color component signals to the scanner.
Since it is configured to be generated at the same time in each reading,
It is impossible to use a means such as the one-drum type in which scanning is performed four times and reading is performed, and the editing setting is changed for each reading. Therefore, there is a problem that white spots and the like occur around black characters and the image quality is significantly deteriorated. In a 4-drum type digital color copying machine, in a system in which a page memory is provided for each of the yellow, magenta, cyan, and black color components, the scanner is once for yellow, magenta, and cyan, and once for black. There is also a method in which the reading is performed twice and the editing setting is changed between the first time and the second time, but since the number of scans increases, there is a problem that the original high productivity cannot be achieved. In addition, there is also a method in which an image signal for each color component obtained by color-separating an original image and read, for example, red (R), green (G), and blue (B) is directly subjected to coloring and editing. Since the original image is processed upstream of, the R, G, B data is then converted to the uniform color space of L *, a *, b *, etc., and then the marker area for color conversion editing or color marker editing is detected. , The image signal in the conversion process is
It is deteriorated as compared with the image signal immediately after obtained by color separation of the original image, and there is a problem that the image quality is adversely affected. The present invention eliminates the above-mentioned problems, and 4
Even when applied to a drum-type digital color copier,
The objective is to realize coloring and mono-color conversion with a simple configuration without impairing image quality and high productivity.

[0007]

In order to achieve the above object, the present invention provides an image reading device for reading an original image and performing color separation to obtain an image signal, and a read color component in a color image editing apparatus. Image processing means for converting the image signal into color information for each item, editing content designating means for designating editing content, editing signal generating means for generating an editing signal based on the input editing content, and editing The image processing means has an image editing means for performing image editing on the color information based on the signal and a color information setting means for setting the designated color information designated by the editing content designating means in the image editing means. The color information for each color component is simultaneously generated in synchronization with the reading operation performed by the reading means, and the image editing means responds to the editing signal from the editing signal generating means,
A plurality of edit processing blocks corresponding to the number of color components are arranged so that the edit processing is simultaneously performed on the color information for each color component. Further, the edit signal generating means has area specifying means for specifying an edit area and area signal generating means for generating an area signal based on the input edit area, and specifies different edit contents for each specified area. The area edit signal is generated. Further, the image processing means has color components of color information of yellow, magenta, cyan,
It outputs a black density signal. The image processing means is composed of the same three editing processing blocks for yellow, magenta, and cyan, and the editing contents are coloring and color designation.

Further, the image processing means uses the logical sum of the color information for each color component by the edit processing block and the delay signal of the color information for each color component before processing which is input to the edit processing block. is there. Further, the image processing means is composed of four identical edit processing blocks for yellow, magenta and cyan black, and the image processing means inputs color information for each color component by the edit processing block and the edit processing block. The logical sum of the color information of each color component before processing and the delay signal is processed. Also, the editing contents are color designations for coloring and mono-color conversion, and color designations for coloring and mono-color conversion, and the editing block is a combination of a maximum value generator and a multiplier that generates the maximum value of color information for each color component. It is composed of

[0009]

According to the color image editing apparatus of the present invention, the image processing means color-separates the original image from the image reading means and reads an image signal for each color component, for example, red (R) and green (G). , Blue (B) are image-processed to generate color information for each color component for the color image recording apparatus, for example, yellow (Y), magenta (M), cyan (C), and black (K) at the same time. The color information for each color component for the color image recording apparatus is sent to the image editing means. In this image editing means, each color component, namely yellow (Y), magenta (M), An edit processing block is arranged in each of cyan (C), and edit processing is performed independently and in parallel. Here, if it is desired to color the black-and-white original with red, for example, the red coloring is designated in advance by the editing content designating means. When the density gradation is 0 to 255 for red, for example, the values of Y = 128, M = 128, and C = 0 are set by the color information setting means in each edit processing block. Further, the edit signal generation means outputs an edit signal to the Y, M, and C edit processing blocks so as to replace the color information with the set values. Therefore, the black and white original image read by the image reading means is processed by Y, M,
After being converted into the C and K signals, the background is red over the entire surface via the image editing means, and the original image is put on the background to be output as a color-edited image.

Area edit means for specifying an edit area and area signal generation means for generating an area signal based on the input edit area, and area edit for supporting different edit contents for each specified area The signal is output to the image editing means so that editing processing for each area is performed. By providing a plurality of color information setting registers in the edit processing block for each color component and switching by the area edit signal, for example, one area can be colored in red and another area can be colored in green.

Further, the edit processing blocks are arranged in Y, M, and C, and the color information input to the edit processing block is temporarily replaced with the set value of the color information of Y, M, C, and K at the time of the coloring edit. , The density signal darker than the set value is output by taking the logical sum of the signals that are synchronized by the delay of the color information for each color component before processing that is input to the editing processing block and then outputting. The image is output as image information, and the color original is also edited. Also, Y,
A total of four editing processing blocks are arranged in each of M, C, and K, and color information for each color component edited by the editing processing block and each color component before processing input to the editing processing block By outputting the logical sum of the color information and the delay signal, the color and black-and-white originals can be color-edited with black ink. Further, the editing contents can be configured so that coloring and mono-color conversion can be performed, and the editing block is composed of a maximum value generator that generates a maximum value of color information for each color component and a multiplier. In the case of color conversion, the image processing unit
A lightness signal is generated by Y, M, C or Y, M, C, K, and a desired monocolor conversion is performed by multiplying each color component by a color component coefficient corresponding to monocolor in a multiplier. . Further, in the case of coloring editing, the color information input to the editing processing block is replaced with the maximum value (for example, 255 when the density gradation is 0 to 255), and the multiplier is added for each color component of the desired coloring color. The desired coloring editing is performed by multiplying by the color component coefficient.

[0012]

Embodiments of the present invention will be described in detail below with reference to the drawings. Although the following embodiments deal with the case where the present invention is applied to a color copying machine, the present invention is not limited thereto and can be applied to a color printer or the like. First, an outline of a color copying machine to which the color image editing apparatus of the present invention is applied will be described. FIG. 2 is a sectional view showing a schematic structure of a color copying machine to which the present invention is applied. In the color copying machine of the present invention,
An original placed on the original table 21 is illuminated by an illumination lamp 22, a color separated image is read by a CCD color sensor 23, and a digital image processing is performed by an image processing circuit 26 via a color signal processing circuit 24 and a cable 25. Is done. Then, one of the read full-color image signals
Pages are temporarily stored in the memory 27. In this type of apparatus, a plurality of photosensitive drums (image forming units) are arranged side by side to form images of a plurality of colors at the same time, and at least images corresponding to the distance between adjacent image forming units are stored. ing.

On the other hand, the image forming unit uses the color components K, Y, M,
Independently for C, for the photosensitive drums 28-31, 1 respectively
Next charging device 32 to 35, developing device 36 to 39, transfer charging device 4
0 to 43 and cleaner devices 44 to 47. The paper fed from the cassette is the paper edge detector 59.
At, the leading edge of the paper is detected as it advances and a leading edge signal is output. The image signal for each color component already stored in the memory 27 is read in synchronization with the leading edge signal of the paper. In the first station, of the color components K, Y, M, C, a K image is obtained by modulating the light of the semiconductor laser 48 into a high beam by the image, and the K image is obtained by the polygon mirror 49, the reflection mirror 50, After being reflected by 51 and 52 and irradiated on the photosensitive drum 27 to form a latent image,
The developing device 36 develops the K color toner, and the transfer charger 40
Thus, the K image of the first color is formed on the copy paper.
Subsequently, at the second, third and fourth stations, the first
Similar to the station, the images of the color components Y, M, and C are developed, transferred, and then fixed by the fixing rollers 53 and 54, so that one copy is completed. Further, in FIG. 2, a U / I 55 is for a user to select a desired function and instruct execution conditions thereof. The U / I 55 is provided with a color CRT display 56 and a hard control panel 57, and an infrared touch board 58 is further combined. The soft buttons on the screen allow direct instructions. Here, when the user performs coloring or mono-color editing processing, U /
I55 sets the menus and colors for coloring and mono-color editing. The setting of the area to be edited is input from the edit pad 60.

The color image editing apparatus of the present invention in the color copying machine of FIG. 2 will be described. The color image editing apparatus of the present invention is the same as the color copying machine of FIG.
Document table 21, illumination lamp 22, CCD color sensor 2
3, a color signal processing circuit 24, a cable 25, an image processing circuit 26, a U / I 55, an edit pad 60 and the like. FIG. 1 is a block diagram of the color image editing apparatus of the present invention. In the figure, a color image editing apparatus according to the present invention includes an image reading unit 1 for color-separating and reading an original image, and a process of converting read image signals for each color component into color information for each desired color component. An image processing means 2 for outputting, an editing content designating means 3 for designating editing content, an editing signal generating means 4 for generating an editing signal based on the input editing content, and an image based on the generated editing signal. An image editing means 5 for performing image editing on color information for each color component from the processing means 2, and color information setting means for setting the designated color information designated by the editing content designating means 3 in the image editing means 5. 6 and. Further, the area designating means 7 for designating an editing area so that different editing contents can be designated for an arbitrary area.
And area signal generating means 8 for generating an area signal based on the input editing area.

The image data of, for example, R, G, B signals from the image reading means 1 is input to the image processing means 2, and the image data of, for example, Y, M, C, K signals is input to the image editing means 5. To do. Here, in the image editing means 5,
The edit processing is performed by the edit processing block provided for each color component.

Further, the structure of the signal processing system of the color image editing apparatus of the present invention will be described. FIG. 3 is a diagram showing a configuration example of a signal processing system of the color image editing apparatus. The signal processing system in the figure shows the parts of the image processing means 2, the editing signal generating means 4, and the image editing means 5 in the block diagram of the color image editing apparatus of FIG. The B, G, and R image data read by the image input unit indicated by the broken line is converted by the first matrix circuit 61 into the lightness signal L *, the first color difference signal a *, and the second color difference signal b * in the uniform color space. , To the first edit processing unit 62. The image data color-edited by the first edit processing unit 62 is the second matrix circuit 6
Input to 3. The second matrix circuit 63 receives a control signal M from the first edit processing section 62 to instruct the mono-color edit processing.
When ONO1 is notified as “1”, the lightness signal L * is output from all three systems, and when notified as “0”, the lightness signal L *, the first color difference signal a *, and the second color difference signal b. * Is converted into development color data of color components Y, M, and C and output. The first matrix circuit 61, the first edit processing unit 62, and the second matrix circuit 63 form a functional portion of the image processing unit 2 and the edit signal generating unit 4.

Further, the second matrix circuit 63 inputs the Y, M and C signals to the expansion / contraction circuit 64, and the first edit processing section 62.
Inputs a control signal to the expansion / contraction circuit 65. The expansion / contraction circuit 64 reduces or expands multi-valued image data in the main scanning direction by interpolating between two points, and the expansion / contraction circuit 65 controls the area for the image data even when the expansion / contraction is performed. The undercolor removal circuit 68 is for expanding and contracting the editing control signal in the main scanning direction so as not to shift the information execution area.
To 71 and the second edit processing unit 66.

Respective Y, M, C from expansion circuit 64
The signal passes through the filter 67 to the undercolor removal circuits 68 to 71.
Is input to enhance the edge part of the character and smooth the halftone data. The undercolor removal circuits 68 to 71 perform the following operation according to the control signal MONO2 notified from the first edit processing unit 62. That is, when the control signal MONO2 instructing the mono-color editing process is notified as "1", the second
The lightness signal L * coming from the matrix circuit 63 is directly output to the second edit processing section 66, and when the control signal MONO2 is notified as ““ 0 ”, the development plate color data of Y, M, and C is converted to the K plate. And new Y, M, C are generated, and the image data for each color component is output to the second edit processing unit 66. Further, the image memory 72 temporarily stores the image data processed by the second edit processing unit 66. As for the image data, the image data for each color component is output to the image output unit in response to a request signal (not shown) from the image output unit. 6
8 to 71, the second edit processing unit 66, and the image memory 72 constitute a functional portion of the image editing means 5. The first edit processing unit 62 and the second edit processing unit 66 will be described below.

[First Editing Processing Unit 62] First Editing Processing Unit 6
2 will be described in detail. The first edit processing unit 62 performs color conversion, color editing, area generation, etc., and its configuration example will be described with reference to the block configuration diagram of the first edit processing unit of the present invention in FIG. The delay signal 73 outputs the brightness signal L * of the image data of 8 bits each, and the color difference signals a * and b * output from the first matrix circuit 61 by the delay circuit 73. It is input to the selector 75 after being delayed by the color editing processing time in the circuit 74. Further, the image data of the lightness signal L * is input as it is to the color conversion circuit 74 as the luminance signal V, but for the color difference signals a * and b *, the higher order 6 of them.
Only the bits are used as the input address of the look-up table 76 (hereinafter referred to as LUT), and the 7-bit hue signal H and the 5-bit saturation signal C are output. Color conversion circuit 74
Is for performing various color edits, which will be described later, on the image data L * = V, H, C based on the edit command input from the area generation circuit 77. Of the image data subjected to color editing, the 8-bit luminance signal V is directly input to the selector 75, but the 7-bit hue signal H and the 5-bit saturation signal C are input to the LUT 78, and the 8-bit luminance signal V is input. Converted into a * and b *. The THSEL signal is supplied from the color conversion circuit 74 to the selector 75, which determines which of the output from the LUT 78 and the color conversion circuit 74 and the delay circuit 73 to select and output. The THSEL signal will be described later. Then, the output of the selector 75 is sent to the second matrix circuit 63 of FIG.

When performing color editing, it is necessary to set an area for color editing. As one of the area setting methods, there is a method of placing a document on the edit pad 60 and designating a desired position. The coordinate data of the area designated by the edit pad 60 is sent from the CPU (not shown) to the plane memory 81 via the graphic controller 79 and the DRAM controller 80, and the pattern of the set area is written. This plane memory 8
1 is composed of four plane memories. Since 1 bit is assigned to each plane memory, each area is represented by a 4-bit code, and 16 areas can be identified. The written area pattern is sequentially added with, for example, a 4-bit code in accordance with the registration order of the areas. The 4-bit code is also an edit command for identifying the edit processing set in each area. It is used as ACMD _{0 to} ACMD _{0 3} ). Here, when making a copy, the setting of the color mode whether the copy is performed in full color or in mono color,
In the case of mono color, it is necessary to make various settings such as the setting of the mono color to be output. Although these various settings are input from the U / I 55, information of these set copy jobs is written in the tag table of the area generation circuit 77 by the CPU (not shown). FIG. 5 is a structural diagram of the tag table of the area generation circuit of the present invention. In the figure, PAINT, CCSEL, MONO, CFI
Each data of LL and MUL _{0 to} MUL ₃ is written in a maximum of 16 setting areas. Here, ACMD ₀ read from the plane memory 81 in synchronization with the image data.
~ When ACMD ₃ is sequentially input to the area generation circuit 77,
The area generation circuit 77 receives the input ACMD ₀ to ACMD ₃
As the input address of the tag table, ACMD ₀
~ Information set in the area corresponding to ACMD ₃ is read, and the area conversion signal is notified to the color conversion circuit 74 and other circuits.

Next, the color conversion circuit 74 will be described with reference to the block diagram of the color conversion circuit of the present invention shown in FIG. In the figure, 82 is a window comparator, and 83
Is a color palette, 84 is a color conversion register, 85-87
Is an AND gate circuit, 88 and 89 are threshold value setting registers,
Reference numerals 90 and 91 are selectors. In the color conversion circuit 74, image processing of color conversion and filling is performed.
First, the color conversion editing process will be described. The window comparator 82 has registers 88 and 89 in which a range of colors extracted from the image data such as the color to be converted in the color conversion is written, and defines the range to be extracted for each of the image data V, H, and C. Two values are written. As a result of the comparison in the window comparator 82, the hit signal is output as "1" from the AND gate circuit 85 within the range where each of the captured image data V, H, and C is extracted in synchronization with the copy scan. It At this time, if the CCSEL signal from the area generation circuit 77 is "1", the AND gate circuit 86 outputs "1".
Is output, the conversion color register 84 side is selected by the selector 90, and color conversion is performed to a color preset in the conversion color register 84. That is, color conversion is performed only in the area where the CCSEL signal is "1".

Next, the edit processing for filling will be described. The color palette 83 is composed of a table for writing color data V, H, and C for filling, and sets the input ACMD ₀ to ACMD ₃ as an input address of the table in an area corresponding to ACMD _{0 to} ACMD _3. The color data V, H, and C that have been generated are ACMD _{0 to} AC
Selected by MD ₃ . Here, when the POINT signal from the area generation circuit 77 is "1", the selector 91 selects the color palette 83 side, and ACMD _{0 to} ACM.
The color data of the input address corresponding to D ₃ is output.
That is, only the area for which the POINT signal is "1" is filled. In the above color conversion and fill editing processing, the output of the AND gate circuit 86 is "0" and P
The output of the AND gate circuit 86, that is, THSEL, becomes “1” for the pixel in which the AINT signal is “0”, that is, the color conversion and the filling are not performed, and the selector 75 in FIG.
Is 24-bit image data L *, a that has passed through the delay circuit.
*, B * are selected, and the image data that has not been edited is output as it is. Next, details of the second edit processing unit 66 will be described.

[Second Editing Processing Unit] The second editing processing unit 66 is for performing coloring and mono-color conversion. Figure 7
It is a block block diagram of the 2nd edit process part of this invention. In the figure, 92 to 95 are selectors, 96 is a maximum value generator, 97 is a minimum value generator, 501 to 503 are multipliers, 5
Reference numeral 04 is a delay circuit. The second edit processing unit 66 is composed of edit blocks corresponding to the image signals Y, M, C, and K, and has selectors 92 to 94, a maximum value generator 96, and a maximum value generator 96, respectively.
It is composed of multipliers 501 to 503, or a selector 95, a minimum value generator 97, and a delay circuit 504. Therefore, each edit block independently processes the image signals Y, M, C, and K, and outputs the processing result to the memory 72. The selectors 92 to 94 have image signals Y, M, and C, respectively.
And the value from the maximum value generator 96 are input, and CFILL
The output is controlled by a signal. Here, the maximum value generator 96
In this embodiment, a value of "255" is generated. On the other hand, the image signal K and the value from the minimum value generator 97 are input to the selector 95, and the output is controlled by the MONO3 signal. Here, the minimum value generator 97 generates a value of "0" in this embodiment. Selector 92-
The output of 94 is input to the multipliers 501 to 503, and the MU
The output is controlled by L _{0 to} MUL ₃ . Here, the multiplication coefficients of the multipliers 501 to 503 are set in the range of "0 to 1.0", and 16 kinds of multiplication coefficients can be selected as a table according to the area edit signals MUL _{0 to} MUL _3. There is. The output of the selector 95 is the delay circuit 504.
To become the image output signal K. The delay circuit 504 synchronizes with the processing time of the multipliers 501 to 503.
Will be installed only on the line.

FIG. 8 is a configuration table of multiplication coefficients of the multiplier according to the present invention. The multiplication coefficient of the multiplier is M which is a region editing signal.
It is set using UL _{0 to} MUL ₃ as addresses. Here, when all of MUL _{0 to} MUL ₃ are “0”, the multiplication coefficient is 1.0 and the setting is fixed to the plain setting. In this embodiment, the coloring and the mono-color conversion are performed in three types of Y, M and C.
The color component signal of each color is used for the generation, and therefore, the block for editing processing of the line of the K color component signal has a different configuration from that of the other color component signal lines. Also,
The originals in the coloring area are for black and white.

Next, the operation of coloring and mono-color conversion in the present invention will be described.

FIG. 9 is an area diagram of the original. In FIG. 9, the U / I 55 designates, for example, that the first area is colored green and the second area is red, which is monocolor conversion. Will be described. Note that the colored green is Y, M, C coverage, Y = 40%, M = 0%,
It is assumed that C = 40% is specified. Here, in the plane memory 81, ACMD _{0 to} A for the first area are processed by the CPU and the graphic controller 79 (not shown).
CMD ₃ = “1”, “2” for the second area, ACMD as a plain area for areas other than the first and second areas
_{0 to} ACMD ₃ = “0” is assigned. Further, “0” is set to PAINT, “0” is set to CCSEL, “0” is set to MONO, “0” is set to CFILL, and MU is set to the “0” address of the tag table of the area generation circuit 77.
“0” is set to L _{0 to} MUL ₃ , and similarly, “0” is set to POINT, “0” is set to CCSEL, “1” is set to MONO, and CF is set to “1” address of the tag table for coloring setting.
ILL is “1”, MUL ₀ to ₃ are “1”, and similarly, “2” address of the tag table is “0” for PAINT for mono color conversion, “0” for CCSEL, and “1” for MONO. , CFILL and “2” are written in MUL _{0 to} MUL ₃ , respectively. Here, the multipliers 501 to 503
At the “1” address of the multiplication coefficient table of 0, 0.4 is used for the Y multiplier 501 and 0 is used for the M multiplier 502.
However, 0.4 is set for the C multiplier 503 for coloring green. Also, "2" in the multiplication coefficient table
The address is set to 0.5 for the Y multiplier 501, 0.5 for the M multiplier 502, and 0 for the C multiplier 503 for red monocolor conversion.

Now, when the setting in the register or table of each block is completed in this way, the copy scan is started next. A read from the plane memory 81
An area edit signal is sent to each block according to the values of CMD _{0 to} ACMD ₃ . First, in the area where no editing process is specified, the MONO1 signal is "0", so the second
The matrix circuit 63 outputs L *, a *, and b * data to Y,
Convert to M and C data. Further, the under color removal circuits 68 to 7
In 1 as well, since the MONO2 signal is "0", the K version and the new Y, M, C data are output from the Y, M, C data, respectively.
Further, since CFILL is also “0” and MUL ₀ to ₃ are also “0”, the input image side is selected by the selectors 92 to 95, and the Y, M, and C multipliers 501 to 503 are passed through, and ordinary Y and M are selected. , C, and K are used for the copy operation. Next, in the first area, the MONO1 signal is "0".
Therefore, the second matrix circuit 63 converts the L *, a *, b * data into Y, M, C data. Further, since the MONO2 signal of the under color removal circuits 68 to 71 is "0", Y,
From the M and C data, the K version and new Y, M and C data are output. Here, CFILL is "1", so
The maximum value generator side is selected in the selectors 92 to 94, and the MU
Since L ₀ to ₃ are also “1”, the multipliers 501 to 503 select the “1” address in the multiplication coefficient table so as to output a preset solid green color. That is, Y =
255 × 0.4 = 102, M = 255 × 0 = 0, C = 2
55 × 0.4 = 102 color component data is output. Since the MONO3 signal is “0” in the K editing block, the selector 95 selects the input image side.
The delayed K data is output as it is. Therefore, when development is performed based on the Y, M, C, and K color component signals, a black image with a solid green background is developed in the first region, and the coloring process is performed. Next, in the second area, since the MONO1 signal is "1", the second matrix circuit 63 outputs L * data for all three systems.
Further, since the MONO2 signal is "1" also in the under color removal circuits 68 to 71, all Y, M, C and K outputs L * data. Since CFILL is "0", the selectors 92 to 94 select the input image side. Where MUL
_{Since 0} to ₃ are "2", the multipliers 501 to 503 select the "2" address of the multiplication coefficient table so as to output the Y, M, and C data at a preset red ratio. Further, since the MONO3 signal is "1", the selector 95 selects the minimum value generator side and outputs "0" as K data. Therefore, when development is performed based on these Y, M, C, and K color component signals, the image monocolor-converted into red is developed in the second region, and monocolor conversion processing is performed.

[Second Embodiment] Next, a second embodiment of the present invention will be described. In the second embodiment of the present invention, the second edit processing unit 66 performs coloring or mono-color conversion as in the case of the first embodiment, and among them, the coloring is selected from Y, M, C and K.
It is generated from the color component signals of the colors, and the edit processing blocks for each color component have the same configuration. Further, not only the black and white originals in the coloring area but also the color originals are targeted. Further, it is considered that only K is used for coloring in black. The configuration is the same as that of the first embodiment except for the second edit processing unit 66. FIG. 10 is a block diagram of the second embodiment of the second edit processing unit of the present invention. Note that since K, Y, M, and C have the same configuration, only one configuration is shown in FIG. 10, and they can be applied as editing blocks for K, Y, M, and C, respectively. In the figure, selectors 510 and 51
1. The maximum value generator 512 is the same as that in the first embodiment, and the maximum value generator 512 generates a value of "255". Further, the minimum value generator 513 generates a value of "0" as in the first embodiment. The multiplier 514 and the delay circuit 515 have the same configurations as in the first embodiment. The delay circuit 515 is a multiplier 514.
In order to synchronize with the processing time of, all the Y, M, C and K lines are installed. Further, the OR gate circuit 516
Is for performing an OR operation for each bit. Next, the operation of coloring and mono-color conversion in the second embodiment of the present invention will be described.

It is assumed that the U / I 55 specifies, for example, the first area is colored in gray and the second area is designated in red as monocolor conversion as shown in FIG. Note that the colored gray is Y, M, C, K coverage, Y = 0%, M = 0.
%, C = 0%, and K = 20% are specified. Here, the CPU and the graphic controller 79 (not shown) in the plane memory 81 perform ACMD ₀ to ACMD ₃ = “1” for the first area, “2” for the second area, and other than the first and second areas. ACMD ₀ to ACMD ₃ = “0” are assigned to the area as a plain area. Also, for setting the plainness to the “0” address in the tag table of the area generation circuit 77, “0” is set in PAINT, “0” is set in CCSEL, “0” is set in MONO, and CF is set.
“0” is set in ILL and “0” is set in MUL _{0 to} MUL ₃ . Similarly, for the “1” address in the tag table, “0” and C are set in the PAINT to set the coloring.
CSEL is set to “0”, MONO is set to “0”, CFILL is set to “1”, and MUL _{0 to} MUL ₃ are set to “1”. Similarly, the “2” address of the tag table is set to the monocolor conversion setting. For PAINT, “0” for CCSEL, “1” for MONO, “0” for CFILL, MU
“2” is written in L _{0 to} MUL _3. Here, “0” for the Y multiplier and “0” for the M multiplier are stored in the “1” address of the multiplication coefficient table of the multiplier 514.
"0" is set for the C multiplier and "0.2" is set for the K multiplier for gray coloring. Also,
At the “2” address of the multiplication coefficient table, “0.5” is used for the Y multiplier and “0.5” is used for the M multiplier.
“0” is set for the C multiplier and “0” is set for the K multiplier for red monocolor conversion. When the setting of the registers and tables of each block is completed as described above, the copy scan is started next.
ACMD _{0 to} AC read from the plane memory 81
An area edit signal is sent to each block according to the value of MD ₃ .

First, in the area where no editing process is designated, the second matrix circuit 63 converts the image data L *, a *, b * into the image data Y, M, C because the MONO1 signal is "0". Convert. Further, the under color removal circuits 68 to 71
Also, since the MONO2 signal is "0", the image data Y, M,
The C to K plates and new image data Y, M, and C are output. Further, the control signal CFILL is also "0", MUL _0.
Since ~ MUL _{3 is} also “0”, the input image side is selected by the selector 511, and the Y, M, C, K multiplier 514 is directly passed through, and a normal copy operation using four colors of Y, M, C, K is performed. Done. Next, in the first area, since the MONO1 signal is "0", the second matrix circuit 63 converts the image data L *, a *, b * into the image data Y, M, C. Further, since the MONO2 signal of the under color removal circuits 68 to 71 is "0", the K plate and the new image data Y, M, C are output from the image data Y, M, C, respectively. Here, since the control signal CFILL is "1", the maximum value generator side is selected as the selector 511, and MUL _{0 to} MUL ₃ are also "1".
Therefore, the multiplier 514 selects the "1" address in the multiplication coefficient table so as to output a preset solid gray color. Since the MONO3 signal is "0",
The input image side is selected by the selector 510, and the OR gate circuit 516 logically sums the delayed input image data and the color component data generated by the multiplier.

Generally, in an original to be colored, the image portion which is not the background has a high density, and it is assumed that Y = 30, M = 150 and C =
In the case of the densities of 20 and K = 60, Y = 255 × 0 = 0, M = 255 × 0 = 0, and C = 255 of the outputs of the multipliers, respectively.
The logical sum of × 0 = 0 and K = 255 × 0.2 = 51 is obtained, and Y = 30, M = 150, C = 20, and K = 63 are output. Also, since the background part is generally white, Y = 0, M =
0, C = 0, K = 0 and Y = 255 × 0 set in the multiplier
= 0, M = 255 × 0 = 0, C = 255 × 0 = 0, K =
The logical sum of 255 × 0.2 = 51 is calculated, and Y = 0, M =
0, C = 0, and K = 51 are output. These Y, M,
When development is performed based on each of the C and K color component signals, a magenta image close to the original image with a solid gray background with only K is developed in the first area, and coloring processing is performed. To be done.

Next, in the second area, since the MONO1 signal is "1", the second matrix circuit 63 outputs the lightness signal L * for all three systems. Further, the under color removal circuits 68 to 7
In 1 as well, since the MONO2 signal is "1", all Y, M, C and K outputs L *. Since CFILL is “0”, the selector 511 selects the input image side. Here, since MUL _{0 to} MUL ₃ are “2”, the multiplier 514
Is the image data Y at a preset red ratio,
“2” in the table of multiplication coefficients to output M, C, K
The address is selected and input to the OR gate circuit 516. Further, the selector 510 has the MONO3 signal of "1".
Therefore, the minimum value generator side is selected, and the image data Y, M,
“0” is input to the OR gate circuit 516 for both C and K. In the OR gate circuit 516, one of the inputs of Y, M, C and K is "0", so that the output of the multiplier 514 is directly passed. Therefore, when development is performed based on these Y, M, C, and K color component signals, the image monocolor converted into red is developed in the second region, and monocolor conversion processing is performed. It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made based on the spirit of the present invention, and they are not excluded from the scope of the present invention.

[0033]

As described above, according to the present invention,
Even in 4-drum type copiers aiming for high productivity,
High-quality color editing and mono-color conversion can be performed without impairing the productivity. Further, the edit block can be realized with a simple structure, and the structure can be constructed at low cost.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of a color image editing apparatus of the present invention.

FIG. 2 is a diagram showing a schematic configuration of a color copying machine to which the present invention is applied.

FIG. 3 is a diagram showing a configuration example of a signal processing system of the color image editing apparatus.

FIG. 4 is a block configuration diagram of a first edit processing unit of the present invention.

FIG. 5 is a structural diagram of a tag table of the area generation circuit of the present invention.

FIG. 6 is a block configuration diagram of a color conversion circuit of the present invention.

FIG. 7 is a block configuration diagram of a second edit processing unit of the present invention.

FIG. 8 is a configuration table of multiplication coefficients of the multiplier according to the present invention.

FIG. 9 is an area diagram of a document.

FIG. 10 is a block configuration diagram of a second embodiment of the second edit processing unit of the present invention.

FIG. 11 is a block diagram of a conventional 1-drum type color copying machine.

FIG. 12 is a block configuration diagram of a first image editing block.

FIG. 13 is a lightness distribution diagram.

FIG. 14 is a block configuration diagram of a conventional second image editing block.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Image reading means, 2 ... Image processing means, 3 ... Editing content designation means, 4 ... Editing signal generation means, 5 ... Image editing means, 6 ... Color information setting means, 7 ... Area designation means, 8 ... Area signal generation Means, 21 ... Original platen, 22 ... Illumination lamp, 23
... CCD color sensor, 24 ... color signal processing circuit, 2
5 ... Cable, 26 ... Image processing circuit, 61 ... 1st matrix circuit, 62 ... 1st edit processing part, 63 ... 2nd matrix circuit, 64, 65 ... Expansion circuit, 66 ... 2nd edit processing part, 67 ... Filters 68 to 71 ... Under color removal circuit 72
... Image memory, 73, 504, 515 ... Delay circuit, 74
... Color conversion & palette circuit (color conversion circuit), 75, 90,
91, 92-95, 510, 511 ... Selector, 76 ...
Look-up table (LUT), 77 ... Region generating circuit, 78 ... LUT, 60 ... Edit pad, 79 ... Graphic controller, 80 ... DRAM controller, 81 ... Plane memory, 55 ... U / I, 82 ... Window comparator, 83 ... Color palette, 84 ... Color conversion register, 85-87 ... AND gate circuit, 88, 8
9 ... Threshold setting register, 96, 512 ... Maximum value generator,
97, 513 ... Minimum value generator, 501-503, 514
... multiplier, 516 ... OR gate circuit.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location 4226-5C H04N 1/46 Z

Claims (7)

[Claims] 1. A color image editing apparatus comprising: (a) image reading means for reading an original image and performing color separation to obtain an image signal; and (b) converting the image signal for each read color component into color information. Image processing means, (c) editing content designating means for designating editing content, (d) editing signal generating means for generating an editing signal based on the input editing content, (e) the editing signal (F) color information setting means for setting the designated color information designated by the editing content designating means in the image editing means, ) The image processing means simultaneously generates color information for each color component in synchronization with the reading operation performed by the image reading means, and (h) the image editing means converts the edit signal from the edit signal generating means into the edit signal. The color image in the color image recording apparatus is characterized by arranging a plurality of editing processing blocks corresponding to the number of color components so that the color information of each color component is simultaneously edited. Editing device. 2. The editing signal generating means has area designating means for designating an editing area and area signal generating means for generating an area signal based on an input editing area, and editing is different for each designated area. The color image editing apparatus according to claim 1, wherein an area edit signal for instructing contents is generated. 3. The color image editing apparatus according to claim 1, wherein the image processing means outputs density signals of color components of color information of yellow, magenta, cyan and black. 4. The image processing means comprises three identical editing processing blocks for yellow, magenta, and cyan, and the editing contents are coloring and color designation.
The described color image editing apparatus. 5. The image processing means calculates a logical sum of color information for each color component by the edit processing block and a delay signal of color information for each color component before processing input to the edit processing block. The color image editing apparatus according to claim 4. 6. The image processing means comprises four identical edit processing blocks for yellow, magenta, and cyan black, and the image processing means includes color information for each color component by the edit processing block, and 4. The color image editing apparatus according to claim 3, wherein the color image editing apparatus is a logical sum of the color information of each color component before processing input to the editing processing block and the delay signal. 7. The edit contents are color designations of coloring and monocolor conversion, and color designation of coloring and monocolor conversion, and the edit processing block is a maximum value generator for generating a maximum value of color information for each color component. 6. The color image editing apparatus according to claim 4 or 5, which is configured by a combination of a multiplier and a multiplier.