JP2001358936A - Image processing unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image processing unit that widens the degree of freedom of composition ratio selection so as to conduct diversified composition processing and to conduct device-independent composition processing. SOLUTION: The image processing unit is provided with: an image acquisition means that acquires an image represented by lightness information and chromaticity information, and an image composition processing section that can composite the lightness information and the chromaticity information of 1st and 2nd images acquired by the image acquisition means at an independent and desired ratio. The image composition processing section uses at least the chromaticity information of the 1st or 2nd image for the chromaticity information after the composition when a prescribed mode is set in the case of compositing the 1st and 2nd images.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing apparatus for acquiring and synthesizing first and second images.

[0002]

2. Description of the Related Art A digital copying machine reads an original II.
It is composed of a T (image input terminal), an IPS (image processing system) for processing read image data, and an IOT (image output terminal) for driving a laser printer and outputting a copy based on the image data. In the IIT, the image information of the original is extracted as an analog electric signal corresponding to the reflectance using a CCD sensor.
This is converted into multi-tone digital image data. In the IPS, various corrections, conversions, edits, and the like are performed by processing image data obtained by the IIT.
In the OT, the halftone image is output by turning on / off the laser of the laser printer based on the image data processed by the IPS.

In such a digital copying machine, multi-tone image data is subjected to IPS processing in accordance with its type. For example, in the case of a character or the like, a sharp image with edge emphasis is converted to a half-tone image such as a photograph. In this case, it is possible to output a smoothed image that has been smoothed, and a color image with high reproducibility with adjusted vividness.Furthermore, coloring, color conversion, trimming, shifting, Composite, shrink, enlarge,
Other edited images can be output. In contrast to this IPS, the IIT uses an original with three primary color R
(Red), G (green), and B (blue) are read and output as image data. In the IOT, Y (yellow), M (magenta), C (cyan), and K (black) are output. By overlaying and outputting halftone images of each color material,
A color digital copying machine is configured. Therefore,
In a color image processing apparatus such as a color digital copying machine or the like, a toner developing device for each of the above colors is used, and scanning is repeated four times in accordance with the development process of each color material.
Each time, full-color image data obtained by reading a document is processed.

Next, the present applicant has proposed an outline of the above-mentioned color digital copying machine (for example, Japanese Patent Laid-Open No. 22327/1990).
No. 5) will be described as an example. FIG. 8 is a diagram showing a configuration example of a conventional color digital copying machine.

In FIG. 8, an IIT 100 is to separate a color original into three primary colors of light B, G, and R by using a CCD line sensor and convert the color original into digital image data. Exposure and development with a laser beam to reproduce a color image. Then, the END conversion circuit 101 between the IIT 100 and the IOT 115 changes the IOT interface 11
Reference numeral 0 denotes an image data editing system (IPS; image processing system), which converts B, G, and R image data into Y, M, C, and K color materials, and performs a development cycle. Each time a color material signal corresponding to the developed color is
5 is output.

In the IIT 100, one pixel is used for each of B, G, and R using a CCD sensor.
Read at a size of 6 dots / mm and read the data
It is output in bits (3 colors × 8 bits; 256 gradations). The CCD sensor has B, G, and R filters mounted on the top surface, and has a density of 16 dots / mm and a size of 300 mm.
And scans at 16 lines / mm at a process speed of 190.5 mm / sec, so that read data is output at a rate of 15 M pixels per second for each color. And, in IIT100, B, G, R
By log conversion of the analog data of the pixel of
The reflectance information is converted into density information and further converted into digital data.

[0007] In the IPS, B, G, R
Color separation signal, and apply various data processing to improve the color reproducibility, gradation reproducibility, definition reproducibility, etc., and convert the color signal of the development process color on / off Output to IOT. END conversion (Equivalen
The t Neutral Density (Equivalent Neutral Density Conversion) module 101 adjusts (converts) to a gray-balanced color signal, and the color masking module 10
Numeral 2 converts the B, G, and R signals into signals corresponding to the amounts of Y, M, and C color materials by performing a matrix operation. The document size detection module 103 performs document size detection at the time of prescanning and platen color erasing (frame erasing) processing at the time of document reading scanning. The color conversion module 104 is input from the area image control module. The specified color is converted in a specific area according to the area signal. And U
A CR (Under Color Removal; under color removal) & black generation module 105 generates an appropriate amount of K so that color turbidity does not occur, and reduces Y, M, and C by an equal amount according to the amount, and also performs a mono color mode. The gate of the K signal and the signals after the undercolor removal of Y, M and C are removed in accordance with each signal of the 4 full color mode. Spatial filter 106
Is a non-linear digital filter having a function of recovering blur and a function of removing moiré.
eproduction Control; color tone correction control) module 10
Reference numeral 7 denotes density adjustment, contrast adjustment, negative / positive inversion, color balance adjustment, and the like for improving reproducibility. The enlargement / reduction processing module 108 performs enlargement / reduction processing in the main scanning direction, and performs the enlargement / reduction processing in the sub-scanning direction by adjusting the scan speed of the document. The screen generator 109 converts a color material signal of a process color expressed in multiple gradations into a signal binarized on / off in accordance with the gradation and outputs the signal. Is the IOT interface module 11
0 is output to the IOT 115. The area image control module 111 has an area generation circuit and a switch matrix.
It has an area command memory 112, a color palette video switch circuit 113, a font buffer 114, and the like.
Various editing controls are performed.

In the area image control module 111, seven rectangular areas and their priorities can be set in the area generating circuit, and control information of the areas is set in the switch matrix corresponding to each area. The control information includes color conversion, color mode such as mono color or full color, modulation select information such as photographs and characters, TRC select information, screen generator select information, and the like.
02, color conversion module 104, UCR module 105, spatial filter 106, TRC module 10
7 is used for control. The switch matrix is
It can be set by software.

The edit control module reads a manuscript, such as a pie chart, instead of a rectangle, and enables a coloring process such as painting a designated area having an unlimited shape with a designated color. This is written in four plane memories, and sets an edit command for each point of the document in four bits by the four plane memories.

In the case of performing the character synthesizing process in the above-described conventional color digital copying machine, for example, a certain threshold value is given to the character luminance signal, and if the value of the character luminance signal is larger than the threshold value, Outputs a character,
When the size is smaller, processing for outputting an image image is performed.

In texture synthesis composed of mechanical patterns, attention is paid to a luminance signal, and a texture image is set to a certain value.
For example, dividing the average value of the texture image into AC components and adding the obtained AC component to the image image,
It is realized by subtracting from the image image. But,
In such a process, a process in which data of two image images overlap, such as a watermark synthesis process, cannot be realized.

Therefore, in the watermark synthesis for synthesizing two images stored in the memory, a watermark picture is created by alternately reading and synthesizing image data from the memory (for example, Japanese Patent Application Laid-Open No. Sho 62-139081, 1964-23677
The watermark picture is created by calculating the logical sum of the image data by BGR (YMC), or by calculating the average value for each pixel of the image data by two BGRs (YMC).

[0013]

However, in the method of alternately reading and synthesizing image data, a specific frequency component is generated in the synthesized image because pixels are selected with a certain regularity. There is a problem that defects occur. In addition, in the method using the logical sum or the average value,
There is a problem that the composition ratio cannot be adjusted according to the original image. In addition, in the method using the logical sum, the overall density of the image increases, and in the method using the average value, the BGR or YMC signal is filtered by an IIT filter or the like. There is a problem that it depends on the characteristics of the IOT color material.

An object of the present invention is to increase the degree of freedom in selecting a combination ratio and to perform various combination processes. It is another object of the present invention to enable a synthesizing process to be performed independently on a device.

[0015]

For this purpose, the present invention relates to an image acquiring means for acquiring an image represented by lightness information and chromaticity information, and a first and a second image acquired by the image acquiring means. An image synthesis processing unit that can synthesize brightness information and chromaticity information independently and at a desired ratio, wherein the image synthesis processing unit is configured to perform the first and second processing when a predetermined mode is set. When the two images are combined, at least the chromaticity information of one of the first and second images is used as the combined chromaticity information.

[0016]

According to the image processing apparatus of the present invention, an image acquiring means for acquiring an image represented by brightness information and chromaticity information, and brightness information about the first and second images acquired by the image acquiring means. An image synthesis processing unit capable of synthesizing chromaticity information independently and at a desired ratio, wherein the image synthesis processing unit converts the first and second images when a predetermined mode is set. When the images are combined, at least the chromaticity information of one of the first and second images is used as the combined chromaticity information, so that various image combining processes can be realized.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of an image processing apparatus according to the present invention.

In FIG. 1A, a first color conversion circuit 1
Is read from the image reading means by, for example, a CCD sensor.
Color separation signals B (blue), G (green), R (red)
Is the system value L of the uniform color space^*a^*b^*Convert to
Where L of the system value^*The axis is light
Represents a degree and is orthogonal to this^*Axis and b^*2D plane of axis
Represents saturation and hue. The image processing circuit 2 has a uniform color space.
Signal L^*a^*b^*Editing and other processing of the present invention
Input and output of image data with the system and other image processing
Is what you do. The second color conversion circuit 3 has a uniform color space.
Signal L^*a^*b ^*To the color material signal Y (yellow
-), M (magenta), C (cyan)
is there. Circuit configuration example of watermark synthesis in image processing circuit 2
Is shown in FIG. 1 (b).

In FIG. 1B, a multiplier 4 multiplies the image image data A by a combination ratio f, and a subtractor 5 subtracts the combination ratio f from “1” and outputs the value to the image. The multiplier 6 multiplies the image data B. The adder 7 adds the output of the multiplier 4 and the output of the multiplier 3 and outputs composite image data. By using this circuit for each of the signals L ^* a ^* b ^{* in} the uniform color space to synthesize the image image data A and the image image data B, it is possible to synthesize a watermark at a ratio of f to (1-f). it can.

In the example shown in FIG. 1C, the subtracter 5 is omitted, and the multiplication coefficient f for the image data A and the multiplication coefficient g for the image data B can be set by values independent of each other. is there. By doing so, for example, the synthesis of an image with a low density or a high density as a whole can be performed well by adjusting the multiplication coefficients f and g.

Next, an embodiment of an image processing apparatus to which the present invention is applied will be described. 2 is a diagram illustrating a configuration example of a signal processing system of the image processing device, FIG. 3 is a diagram illustrating a configuration example of an editing processing system, and FIG. 4 is a diagram illustrating a configuration example of a mounting mechanism of the image processing device.

In FIG. 2, the image input unit 100 includes, for example, three B, G, and R CCs arranged at right angles to the sub-scanning direction.
It has a reduction type sensor composed of a D line sensor, and performs image reading by scanning in the main scanning direction in synchronization with a timing signal from the timing generation circuit 12 while moving at a speed according to the magnification in the sub-scanning direction. It is an IIT, and is converted from analog image data into, for example, 8-bit digital image data expressed in gradation. The shading correction circuit 11 performs shading correction on the image data for variations between pixels due to various factors, and the gap correction circuit 13 performs gap correction between line sensors. Gap correction is performed by FIFO14
Is to delay image data read by an amount corresponding to the gap of the CCD line sensor so that B, G, and R image data at the same position can be obtained at the same time. An ENL (Equivalent Neutral Lightness) conversion circuit 15 performs gray balance processing of image data using a parameter corresponding to a document type, and a negative / positive inversion signal from an editing processing unit 400 described later. Accordingly, the negative / positive inversion is performed by inverting the gray for each pixel. For example, the negative / positive can be inverted only in a certain designated area.

B, G, processed by the ENL conversion circuit 15
The R image data is, for example, equalized by the matrix circuit 16a.
Color space signal L^*, A^*, B^*Is converted to Uniform color sky
Signal L between^*, A^*, B^*Are orthogonal coordinates
L on axis^*Represents lightness and a^*, B^*Is the chromaticity plane (hue,
(Saturation). The signal L in such a uniform color space^*,
a ^*, B^*To the memory system 20
Easy interface with external devices such as a computer
Color conversion, editing, and detection of image information.
Making it easier. The selector 17 includes the matrix conversion circuit 1
6a output or the interface
Selectively retrieve image data from memory system 200
Or capture both image data at the same time
This performs the processing of the tea synthesis and the watermark synthesis. That
Therefore, the selector 17 sets the composition ratio for the composite image.
It has a function to perform the constant, arithmetic processing, and synthesis processing.

The background removal circuit 18 detects the background density by creating a histogram of the document density by, for example, pre-scanning, and skips the pixels having the background density or less to improve the copy quality for a fogged document such as a newspaper. It is for. The document detection circuit 19 detects and stores a document size by detecting a boundary between the back surface of the black platen and the document and obtaining a circumscribed rectangle. In the background removal circuit 18 and the original detection circuit 19, of the signals L ^* , a ^* , and b ^{* in} the uniform color space, the lightness information is converted into the signal L ^*.
Is used.

The editing processing section 400 sets an area command for performing editing processing and switching parameters and the like for each area and generates an area control signal based on the area command. Conversion, marker color detection, and other processing are performed. Then, the processed image data is input to the matrix conversion circuit 16a and the pictograph separation circuit (TIS circuit) 20.

The image data after the editing process
In the conversion circuit 16b, L^*, A ^*, B^*To Y,
Are converted into M and C toner colors, and the
Is a color character / black character / pattern
(Character / halftone) area is identified. Under color removal circuit
In 21, Y converted by the matrix conversion circuit 16 b,
Mono / full color signals from M and C image data
Generation of black plate (K) and removal of equal amounts of Y, M and C according to
To output process color image data,
Next, a hue determination is performed to generate a hue signal (Hue). What
When performing identification processing in the pictogram separation circuit 20,
For example, a delay of 12 lines in the area identification signal
Hue signal and image data
FIFO2 is used to synchronize the data.
2a and 22b.

The enlargement / reduction circuit 23b enlarges / reduces the image data in accordance with the designated enlargement / reduction ratio. In the sub-scanning direction, the image input unit 100 changes the scanning speed according to the enlargement / reduction ratio. Since the enlargement process is performed, the image data is thinned out or interpolated in the main scanning direction. The enlargement / reduction circuit 23a is for performing enlargement / reduction processing of the area command so that the execution area of the area control information does not shift in response to the enlargement / reduction processing for the image data. The area control information subjected to the scaling processing is transmitted to the area decoder 24.
And is supplied to the processing of each processing block. The area decoder 24 includes an area command, an area identification signal,
Signals for switching the parameters 25 of the filter, the coefficients of the multiplier 26, and the parameters of the TRC circuit 27 are generated and distributed from the hue signal.

The filter 25 removes halftone moiré and emphasizes edges of characters on the image data reduced or enlarged by the reduction / enlargement circuit 23b according to the spatial frequency. The TRC circuit 27 is for adjusting the density according to the characteristics of the IOT using the conversion table.
Reference numeral 29 denotes a TRC based on a signal of a development process or an area identification.
The decoder switches the parameters of the conversion table of the circuit 27. The multiplier 26 performs an operation of ax + b on the image data x using the coefficients a and b. The coefficient is switched such as through for a halftone and high γ for a character. Then, by appropriately selecting a coefficient and a conversion table for each color component used in conjunction with the TRC circuit 27, color adjustment for color characters, black characters, and patterns can be performed.
The density adjustment is performed. Further, the parameters of the filter 25 can be standardized, and the edge enhancement of the character can be adjusted by the coefficients a and b. The image data adjusted by the above is stored in the memory system, or is dot-expanded by the screen generation unit 28 of the ROS 300 and output as a halftone image.

The edit processing section 400 performs color conversion, color edit, generation of an area control signal, and the like, and receives image data L ^* , a ^* , and b ^* from the selector 17. FIG. 3 shows the configuration. The LUT 415a converts the chromaticity information from a and b in a rectangular coordinate system to C and H in a polar coordinate system so that marker color and other colors can be easily detected, edited, and converted. The color conversion & palette 413 has, for example, 32 types of palettes for colors used in color conversion and color editing, and uses the marker colors for the image data L, C, H according to the area command input through the delay circuit 411a. Processing such as detection, color editing, and color conversion is performed. Then, only the image data in the area where the processing such as color conversion is performed is processed by the color conversion & palette 413 and the LUT 4
After the inverse conversion from C and H to a and b in 15b, the image data in the other area is directly output from the selector 416 and sent to the above-described matrix conversion circuit 16b.

The marker colors (three colors) detected from the image data by the color conversion & palette 413 and the 4-bit signal of the closed area are sent to the density conversion / area generation circuit 405. Density conversion
In the area generation circuit 405, FIFOs 410a and 410
If the number of black pixels among the 16 pixels is equal to or more than a predetermined number in a 4 × 4 window using b and 410c, a binarization process of “1” is performed to perform density conversion from 400 spi to 100 spi. The marker signal (closed loop or marker dot) generated in this manner is written from the density conversion / area generation circuit 405 to the plane memory 403 through the DRAM controller 402.

The marker / dot signal is filtered by a FIFO so as not to erroneously detect small dust as a marker.
A coordinate value generation circuit 407 detects marker dots and generates a coordinate value by delaying by 3 lines by O408 to make a 3 × 3 window, and stores it in the RAM 406. Note that this marker / dot is stored in the plane memory 40.
3, but this processing is performed to prevent erroneous detection.

The plane memory 403 is a memory for storing an area command for performing color conversion, color editing, and other area editing. For example, an area is designated from an edit pad, and the area command is written in the area. be able to. That is, the area command of the area specified by the edit pad is transferred to the graphic controller 401 through the CPU bus, and is written from the graphic controller 401 to the plane memory 403 through the DRAM controller 402. The plane memory 403 is composed of four planes,
A variety of area commands can be set.

The 4-bit area command stored in the plane memory 403 is read out in synchronization with the output of the image data, and is edited in the color conversion and palette processing, the image data processing system shown in FIG. The matrix conversion circuit 16, the selector 17, the under color removal circuit 21, and the area decoder 24 are used to switch parameters such as a filter 25, a multiplier 26, a TRC circuit 27, and a screen generation unit 28. When this area command is read from the plane memory 403 and used for editing processing in the color conversion & palette 413, switching of parameters in the image data processing system, etc.
The density conversion to 00 spi is required, and the processing is performed by the density conversion area generation circuit 405. The density conversion area generation circuit 405 performs 3 × 3 block formation using FIFOs 409a and 409b, and performs data interpolation from the pattern to reduce the boundary between the closed loop curve and the editing area from 100 spi to 40 spi.
Density conversion to 0 spi is performed. Delay circuit 41
Reference numerals 1a, 411b, 1M FIFO 412, and the like are used to adjust the timing between the area command and the image data.

In the image composition of the present invention in the above-mentioned system, for example, by controlling the selector 17 from the image input unit 100 and the memory system 200, each image image data is taken into the editing processing unit 400 and is converted into the color conversion & palette 413. You may go.

In the color copying machine shown in FIG. 4, a base machine 30 includes a platen glass 31, on which an original is placed, an image input terminal (IIT) 32, an electric system control storage unit 33, and an image output terminal (IOT) 34. , A paper tray 35, and a user interface (U / I) 36. As an option, an edit pad 61,
Auto Document Feeder (ADF) 62, Sorter 6
3, and a film image reading device including a film projector (F / P) 64 and a mirror unit (M / U) 65.

The image input terminal 32 includes an imaging unit 37, wires 38 for driving the imaging unit 37,
The imaging unit 37 includes a driving pulley 39 and the like.
Primary color of light B (blue), G (green), R
The image information of the color document read out using the CCD line sensor after the color separation into (red) is converted into multi-gradation digital image data BGR and output to the image processing system. The image processing system is housed in the electrical system control housing unit 33, receives BGR image data, performs various conversions, corrections, and edits to improve color, gradation, definition, other image quality, and reproducibility. And the like, and converts the primary colors Y (yellow), M (magenta), C (cyan), and K (black) of the toner, and turns on / off the tone toner signal of the process color. It is converted into a valued toner signal and output to the image output terminal 34. The image output terminal 34 includes a scanner 40,
It has a photosensitive material belt 41, and converts image data into an optical signal at a laser output section 40a, and outputs a polygon mirror 40b, F
A latent image corresponding to the original image is formed on the photosensitive material belt 41 via the / θ lens 40c and the reflection mirror 40d, and the image is transferred to a sheet conveyed from the sheet tray 35 to discharge a color copy.

In the image output terminal 34, the photosensitive material belt 41 is driven by a driving pulley 41a, and a cleaner 41b, a charger 41c, each developing unit 41d of YMCK, and a transfer unit 41e are arranged around the photosensitive material belt 41.
e, a transfer device 42 is provided. And
The paper sent from the paper tray 35 via the paper transport path 35a is added, and in the case of four-color full-color copying, the transfer device 42 is rotated four times to transfer each of the YMCK latent images onto the paper. Is fixed from a transfer device 42 via a vacuum transfer device 43 by a fixing device 45 and discharged. SSI
(Single sheet inserter) 35b is the paper transport path 3
5a, the paper can be selectively supplied manually.

The user interface 36 is for the user to select a desired function and instruct the execution conditions. The user interface 36 includes a color display 51 and a hard control panel 52. You can give instructions directly.

The electric system control storage unit 33 includes a plurality of control boards configured separately for each processing unit such as the image input terminal 32, the image output terminal 34, the user interface 36, the image processing system, and the film projector 64. Further, an MCB board (machine control board) for controlling the operation of mechanisms such as the image output terminal 34, the automatic document feeder 62, and the sorter 63, and a SYS board for controlling the whole are housed.

FIGS. 5 to 7 show another embodiment of the image processing apparatus according to the present invention. The example shown in FIG. 5 is an example in which a black-and-white image and a color image can be combined. The same circuit as in FIG. 1B is used for the brightness information (L ^* ), and the chromaticity information (a ^{For *} b ^* ), a selector 11 is provided to adopt the information of the color image as it is. Image image data B is a color image,
When the image image data A is a monochrome image, the selector 11 selects the image image data B by the selection signal SEL, and when both are color images, the selector 11 selects the image image data A by the selection signal SEL. The configuration is as follows. In other words, when the image image data A is a black and white image, the selector selects the image image data B of the color image as the output of the adder 7 as it is as the composite image data with respect to the chromaticity information (a ^* b ^* ). 11 is controlled. Therefore, the selector 11 is provided at the subsequent stage of the adder 7, and receives the output of the adder and the image image data B,
You may comprise so that either may be selected. In addition,
It is of course possible to control the image data A of the color image in the same manner as in the case of the monochrome image, and to combine only the brightness information with another color image.

The example shown in FIG. 6 is an example in which the multiplication coefficient can be set independently of the image data A and B, the brightness information and the chromaticity information. In this circuit, by setting the multiplication coefficients f2 and g2 for the chromaticity information to 0, it is also possible to combine black and white images, and the multiplication coefficient g1 is set to "1".
By setting “−f1” and f2 to “1” and g2 to “0”, the same combination as in the example shown in FIG. 5 can be performed.

The example shown in FIG. 7 is an example in which, in the circuit of FIG. 6, a selector 12 is connected to the subsequent stage of the chromaticity information adder 7, so that an arbitrary chromaticity pattern can be selected and output. In this circuit, the hue and saturation are fixed, and only the brightness information is obtained by providing the chromaticity information with a chromaticity pattern composed of a constant value registered in advance.
And B can be combined to obtain a monocolor-like composite image.

It should be noted that the present invention is not limited to the above embodiment, and various modifications are possible. For example, in the above embodiment, a multiplication coefficient is given to each of the image data A and B, and a composite image is obtained by (image image data B) × f + (image image data A) × (1-f). Is calculated as (image image data B-image image data A) × f
+ Image image data A may be used. As a result, in the example of FIG. 1B, one multiplier can be reduced. This can be similarly applied to the example of FIG. 6, and can be applied to values such as BGR and YMC. Also, the synthesized image data may be configured to select, on a pixel-by-pixel basis, whether to perform watermark synthesis or data not to be subjected to watermark synthesis based on an area signal input from the outside, and output the selected data.

[0044]

As described above, according to the present invention,
Image acquisition means for acquiring an image represented by brightness information and chromaticity information; and brightness information and chromaticity information for the first and second images acquired by the image acquisition means are synthesized independently and at a desired ratio. An image synthesizing unit that can perform image synthesis of the first and second images when a predetermined mode is set. Since the chromaticity information of one of the first and second images is used as the chromaticity information after synthesis,
Various synthesis processes of images can be realized.

[Brief description of the drawings]

FIG. 1 is a diagram for describing an embodiment of an image processing apparatus according to the present invention.

FIG. 2 is a diagram illustrating a configuration example of a signal processing system of the image processing apparatus.

FIG. 3 is a diagram illustrating a configuration example of an editing processing system.

FIG. 4 is a diagram illustrating a configuration example of a mounting mechanism of the image processing apparatus.

FIG. 5 is a diagram showing another embodiment of the image processing apparatus according to the present invention.

FIG. 6 is a diagram showing another embodiment of the image processing apparatus according to the present invention.

FIG. 7 is a diagram showing another embodiment of the image processing apparatus according to the present invention.

FIG. 8 is a diagram illustrating a configuration example of a conventional color digital copying machine.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... First color conversion means, 2 ... Image processing means, 3 ... Second color conversion means, 4, 6 ... Multiplier, 5 ... Subtractor, 7 ... Adder

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor, Koyuki Kono, 2274 Hongo, Fuji Xerox Co., Ltd., Ebina-shi, Kanagawa Prefecture 72) Inventor Hiroshi Sekine 2274 Hongo, Ebina-shi, Kanagawa Prefecture Inside Fuji Xerox Co., Ltd. (72) Inventor Masahiro Ishiwatari 2274 Hongo, Ebina-shi, Kanagawa Prefecture Inside Fuji Xerox Co., Ltd. CA16 CB01 CB08 CB12 CB16 CC01 CE08 CE18 5C076 AA11 AA26 BA06 5C077 LL19 MM01 MM03 MP01 MP08 NN20 NP03 PP23 PP32 PP36 TT06 5C079 HB01 HB02 HB08 HB11 JA23 LA40 LC12 NA02 PA02

Claims (1)

[Claims] 1. An image acquisition unit for acquiring an image represented by brightness information and chromaticity information, and independent brightness and chromaticity information of the first and second images acquired by the image acquisition unit. An image synthesis processing unit capable of synthesizing at a desired ratio, wherein the image synthesis processing unit performs at least image synthesis of the first and second images when a predetermined mode is set. An image processing apparatus according to claim 1, wherein the chromaticity information is one of the first and second images as chromaticity information after synthesis.