JPH045671A - Image processor - Google Patents

Abstract

PURPOSE:To convert a designated color to a desired color without causing an erroneous color recognition by recognizing and informing beforehand a recognized color convertible document, and thereafter, inputting color information for conversion. CONSTITUTION:A document 1000 passes through an image sensor 202 from a lens 201 of an image reading part 2000, goes into an A/D converter 203, and a converted signal is inputted to an image processing part 3000. In the processing part 3000, a shading correction of each picture element is executed by a shading correcting circuit 204, and a color recognition processing is executed by a color recognizing circuit 205. A result of its recognition is sent out to a convertible color recognizing circuit 211, and based on an instruction from an operating part 213, a CPU 214 outputs a signal to a color converting circuit 206. As a result, the circuit 206 processes the output signal of the circuit 205 and executes a color conversion processing. In such a way, it is recognized to be a color convertible document 1000 by the circuit 211, and thereafter, its conversion is executed, therefore, the designated color can be converted to a desired color without causing an erroneous color recognition.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to an image processing device that reads a color original image and forms a color image on a recording medium using a plurality of developers. The present invention relates to an image processing device that can specify the conversion of an image into an arbitrary color image.

[Prior Art] Conventionally, a digital copying device (a league unit and a printer unit are connected by a communication cable etc.) have been put into practical use.

Furthermore, in response to recent demands for color image processing, devices have been proposed that are capable of color conversion processing that reproduces desired colors in a color image serving as a document in desired colors.

In order to execute such color conversion processing, color conversion designation processing by the operator is required as preprocessing. In this case, the area to be color-converted is usually configured so that it can be specified by area designation using a digitizer or the like or by inputting numerical information.

[Problems to be Solved by the Invention] However, according to the area specification or point specification as described above, there is a risk that colors that are not desired to be converted may be converted using only information from data at the point. On the other hand, on the other hand, a situation may occur in which a desired color is not converted.

In addition, in terms of operation, there are similar problems as described above in adjacent areas inside and outside the specified area due to misalignment in area specification.

The present invention has been made to solve the above-mentioned problems, and after recognizing and notifying the recognized document color information that can be converted in color in advance, inputting the color information to be converted is executed. It is an object of the present invention to provide an image processing device capable of converting a specified color in a document into a desired color and outputting the converted color without misrecognizing the color.

[Means for Solving the Problems] An image processing device according to the present invention includes a color recognition unit that recognizes a convertible color from read color document image information;
The apparatus is provided with an operation section capable of displaying the color convertible recognition color recognized by the color recognition means and desired conversion color information for the color convertible recognition color.

Further, the operation unit is configured to display the color information to be converted and the conversion color information to be converted in characters.

Further, the operation section is configured to display either the color information to be converted or the conversion color information to be converted in color using characters and hues.

Further, the operation unit is configured to display both color information to be a color conversion target and conversion color information to be converted in hue.

[Operation 1] In the present invention, when specifying chromaticity information, the color convertible recognition color recognized by the color recognition means and the desired conversion color information for this color convertible recognition color are displayed on the operation unit, and the non-convertible color is specified. This makes it possible to avoid erroneous operations such as

Further, when specifying chromaticity information, the operation unit displays the color information to be converted and the conversion color information to be converted in text, and provides the operator with color information valid for the color conversion instruction as text. make it possible.

Furthermore, the operation unit displays either the color information to be converted or the conversion color information to be converted in color as text and hue, and operates the corresponding color information valid for color conversion instructions as text or the corresponding hue. It is possible to provide the information to the following persons.

Further, the operation unit is configured to display both color information to be converted and conversion color information to be converted in hue,
To make it possible to provide an operator with color information that corresponds effectively to a color conversion instruction as a hue.

Embodiment 1 FIG. 1 is a cross-sectional view illustrating the configuration of an image processing apparatus according to an embodiment of the present invention, and corresponds to, for example, a full-color digital copying machine.

The configuration and operation will be explained below.

The photosensitive drum 1 has an electrophotographic photosensitive layer on its surface,
It is rotationally driven in the direction of arrow X. A primary charger 4 is installed around the photosensitive drum 1. Developing device 1 having multiple developing units
00. Transfer device6. A cleaning device 5 is arranged respectively. Further, an image reading section (reader section) 3 is arranged at the top of the copying machine, and photoelectrically reads the original image on the platen 26. The image reading section 3 includes a document table (platen glass) 26. Original illumination lamp 25. Scanning mirror 23.2
4. Imaging lens 221 RGB filter for color separation (separation filter) 35. Image sensor 3 composed of CCD etc.
It is composed of 4th grade.

Further, the original illumination lamp 25 is configured to scan and move integrally with the scanning mirror 2324, and scans the original at a constant speed determined according to a preset magnification and the like.

Note that an operating section, which will be described later, is provided around the document table 26, and includes keys for setting various modes related to the copying sequence, and a display and an indicator.

After the reflected light image of the scanned original passes through the imaging lens 22,
Decomposition filter 35. The image sensor 34 separates the colors and converts them into electrical signals, and various image processing is performed on this document information signal. After that, laser scanner unit 3
1 emits a laser beam modulated by an image signal,
This laser light is illuminated onto the photosensitive drum 1 by fixed mirrors 32 and 33, and image exposure is performed. Note that the laser scanner unit 31 is a well-known device that deflects laser light using a rotating polygon mirror, and the details will be described later.

Furthermore, in this embodiment, a fixing device 1 is provided on the right side of the copying machine.
8 and a paper feeder 2 are arranged, and a transfer drum 6a
A transfer paper conveying system 17 is arranged between the fixing device and the fixing device.

In the above configuration, image formation is repeated on the photosensitive drum 1 for each color-separated color signal, that is, the steps of charging, developing, transferring, and cleaning are repeated for each color.

The developing device 100 includes a movable base 120 that is movable in the left and right direction.
Developing units 2M (magenta developing unit), 2C (cyan developing unit), 2, which are detachably held in the
Y (-i' yellow developing unit) and 2B (black developing unit), each color-separated latent image formed on the photosensitive drum 1 is visualized by each corresponding developing unit, and a toner image and a toner image are developed. do. 30 is a drive roller.

The transfer device 6 includes a transfer drum 6a around which a transfer material carrying sheet is provided, and is configured to electrostatically hold the transfer paper on the transfer drum 6a. The transfer drum 6a grips the transfer paper fed at the same timing from the paper feeder 2, and rotates to transfer the toner images of each color on the photosensitive drum 1 in a superimposed manner at a transfer position T. At the transfer position T, a transfer charger 7 is arranged inside the transfer drum 6a.

The paper feeding device 2 includes paper feeding rollers 37, 38 . It is composed of pickup rollers 13, 14, etc., and is connected to a CPU circuit section 2, which will be described later.
Transfer paper and the like are fed from the cassettes 15 and 16 in accordance with the drive command from 04. 11 is a paper feed guide.

Next, the operation will be explained.

The transfer material fed by the pickup rollers 13 and 14 is conveyed between the registration rollers 12 via the paper feed rollers 37 and 3B, and after the skew is removed, it forms a loop of a certain amount and is transferred to the transfer drum 6a. Waits for the laser write synchronization signal (ITOP) generated by rotation. When each of the above signals is input manually, the registration rollers 12 rotate to convey the transfer material to the transfer drum 6a and grip it.

Also, at approximately the same time as this processing, the optical system starts scanning, and the image read by the image sensor 34 is processed by the image processing circuit attached to the image sensor 34, and the output of the image processing circuit modulates the laser light. , and is scanned by the laser scanner unit 31 and exposed onto the charged photosensitive drum 1 to form an electrostatic latent image. The formed latent image is visualized by the developing device 100 and becomes a toner image. The toner image formed on the photosensitive drum 1 is transferred onto a transfer material by a transfer device 6. After repeating this series of operations for the required number of developing colors, the transfer paper onto which the toner images of each color have been sequentially transferred is separated from the transfer drum 6a by a separation charger 8 or the like. The transfer paper is then sent to a fixing device 18 by a transfer paper transport system 17. The toner image on the transfer paper is fixed onto the transfer paper by a fixing device 18, and then the transfer paper is discharged onto a tray 19. Note that C0NT is a controller section.

FIG. 2 is a control block diagram illustrating the configuration of the controller unit C0NT shown in FIG. 1, and the configuration and operation will be explained below.

The original 1000 is read by the lens 201 of the image reading unit 2000.
A that performs A/D conversion through the image sensor 202
The signal enters the A/D converter 203 and the signal after A/D conversion is input to the image processing unit 3000. In the image processing unit 3000, a shading correction circuit 204 performs shape ink correction for each pixel, and a subsequent color recognition circuit 205 performs color recognition processing. The color recognition result is sent to the convertible color recognition circuit 211, and based on an instruction from the operation unit 213, the CPU
214 outputs a signal to the color conversion circuit 206. In response to this, the color conversion circuit 206 processes the output signal of the color recognition circuit 205 and executes color conversion processing.

After color conversion is performed in this manner, the light color density conversion circuit 207. Processing outputs are sequentially sent to the image editing section 209 that receives signals from the masking OCR correction circuit 208 and the data control circuit 212, and are input to the image recording means 40oO. The image recording unit 4000 includes a control circuit such as a motor that transports transfer paper, etc. 1 a laser recording circuit unit that writes the video signal input from the image processing unit 300o onto the photosensitive drum 1;
It is composed of a development control circuit and the like that performs development, and forms a copy image on recording paper such as recording paper. In addition, the CPU circuit section 500
0 indicates each device connected to the bus based on various control programs stored in the ROM 215 (image reading section 20009 image processing section 30001 image recording section 4000).
etc.).

216 is a RAM, which mainly functions as a work memory for the CPU 214.

In the image processing apparatus configured as described above, when angle change information is specified, the color convertible recognition color recognized by the color recognition means (in this embodiment, the convertible color recognition circuit 211) and the color convertible recognition color are displayed on the operation unit 213. To display desired conversion color information for a color and to avoid erroneous operations such as specifying a color that cannot be converted.

In addition, when specifying angle change information, the operation unit 213 displays the color information to be converted (recognized by the convertible color recognition circuit 211) and the conversion color information to be converted in text, which is effective for color conversion instructions. This makes it possible to provide the operator with corresponding color information as text. Furthermore, the operation unit 213 displays either the color information to be converted (recognized by the convertible color recognition circuit 211) or the converted color information to be converted in color with characters and hues, which is effective for color conversion instructions. This makes it possible to provide the operator with corresponding color information as characters or corresponding hues.

Further, the operation unit 213 is configured to display both color information to be converted (recognized by the convertible color recognition circuit 211) and conversion color information to be converted in hue,
To make it possible to provide an operator with color information that corresponds effectively to a color conversion instruction as a hue.

FIG. 3 is a plan view illustrating the configuration of the operation unit 213 shown in FIG. It is something.

A panel unit 302 includes a liquid crystal display panel and a touch panel, and informs the operator of machine status, operation method for setting copy mode, paper size, copy magnification, and the like. In particular, when presented in color conversion copy mode (when color conversion key 328 is pressed), convertible color candidates obtained by processing image information by Briscan are displayed as recognized color characters or hues indicating the recognized color. It is configured so that it can be displayed in color. Furthermore, the configuration is such that the converted color for the converted color in the document can be similarly displayed in characters or hues.

303 is a reset key, which is a key for initializing the currently set mode. 304 is a clear/stop key, which is pressed to stop the operation of the machine while it is in operation, and to clear the number of sheets, etc. set with the numeric keypad 301 when the machine is not in operation.

A copy start key 305 is pressed to start a copy operation.

A key 306 is used to select the paper size, and the selected paper size (for example, A4) is displayed on the panel section 302 such as a display panel.

A density adjustment key 307 is used to adjust the copy density from light to dark, and 30B displays the current density level using nine LEDs.

A document type mode selection key 309 is used to select text mode, photo mode, and text/photo mode depending on the type of document. Reference numeral 310 denotes a light emitting diode (hereinafter abbreviated as LED), which indicates that each of the text mode, photo mode, and text/photo mode is selected, and only one of the three lights up.

311 is a control key, an OK key 312, an up arrow key 313 . Down arrow key 314° Right arrow key 315
．． The left arrow key 316 is pressed to move the cursor on the panel section 302 such as the display panel and set each mode.

A color selection key 317 is used to select one of AC, S (black and white/color automatic recognition) mode, black (black and white printing) mode, and full color mode. Reference numeral 318 denotes a color selection display section, in which an LED corresponding to the color mode set with the color selection key 317 lights up.

Reference numeral 319 is a fixed size/same size key, which is pressed when enlarging/reducing from a standard size sheet to a standard size sheet or changing to the same size.

Reference numeral 320 denotes a center movement key, which is pressed when copying the original to the center of the copy paper.

321 is the zoom key, 1% from 50% to 400%
Press to set magnification in increments.

322 is a vertical/horizontal independent zoom key, which is pressed when changing the vertical and horizontal magnification of the original and making a copy.
It is possible to set the magnification in 1% increments from % to 400%.

323 is an auto zoom key, which is pressed to automatically copy according to the original size and paper size.

324 is a binding margin key, which is pressed to move the original image left and right, create a binding margin, and copy.

Reference numeral 325 is an area designation key, which is used when specifying an area using an area designation means such as an editor.

326 is a color balance key, which is pressed when adjusting the delicate balance of colors.

327 is a color mode key for specifying a color mode such as three colors or monocolor.

Reference numeral 328 is a color conversion key, which displays convertible colors on the document in text on the operation unit 213, and displays the convertible colors on the document on the panel unit 3 such as a touch panel.
Specify and input the desired color to be converted from 02.

[First Color Conversion Process Designation Process] Hereinafter, a color conversion process designation operation in the image processing apparatus according to the present invention will be described with reference to FIGS. 4(a), (b), and FIG. 5.

FIGS. 4(a) and 4(b) are schematic diagrams showing the first color conversion process designation operation procedure in the operation unit 13 shown in FIG. show. It is assumed that bliscan and recognition processing have already been completed to recognize convertible colors in a color document.

Here, when the color conversion key 328 is pressed, the panel section 3
When the color conversion setting screen is displayed at 02 (see display state transition (1)), the corresponding LED lights up.

As shown in the figure, the recognized convertible color candidates are displayed in characters (■ to ■ in the figure indicate color candidates).

Next, when you touch the color you want to convert (■ blue), the display on the panel section 302 changes as shown in display state transition (2) (the shaded area indicates the selected state), and when you touch "Register" , the display on the panel section 302 switches to display state transition (8) to display convertible colors. As a result, the candidate color to be converted is determined, and the process moves to the color selection process to be converted.

Next, touch the text section "yellow" and "conversion" in sequence.
The display on the panel section 302 changes display status (9), (1
0) and when "OK" is touched, the display on the panel section 302 switches to the display state transition (11), and the display on the panel section 302 returns to the display state transition (1). At this time, if the characters "end" on the panel section 302 are touched, the color conversion setting process ends and the process moves to the main image process.

On the other hand, when the symbol "middle" is touched in the display state transition (11) (see display state transition (4)), the panel section 302
The display changes to the display state transition (5), and if there are convertible color candidates other than the recognized convertible color candidates as shown in the display state transition (1), the display on the panel section 302 changes to the display state Switching to transition (5).

On the other hand, in the state of display state transition (1), when the symbol "ni" is touched, there are convertible color candidates other than those recognized as shown in display state transition (1). If not, the panel section 302 switches to a display state transition (7) in which the symbol "Naka" is displayed, indicating that there are no more conversion color candidates.

Note that the display state transition (12) of the panel section 302.

(13) corresponds to the display when the color to be converted exists other than those shown in display state transition (8), and display state transition (8)
If there are no items other than those shown, the symbol “middle” is displayed on the panel section 302.

Also, panel section 302 (7) rYMCKJ is YMCK
Press to set the amount individually.

FIG. 5 is a flowchart showing an example of the first color conversion processing procedure in the image processing apparatus according to the present invention. Note that (1) to (9) indicate each step.

First, the image reading unit 2000 briefly scans a color original (1), the image processing unit 3000 executes color recognition processing from the color-separated and read image information (2), and determines convertible colors (3). . Next, the recognized convertible color candidates are displayed in characters on the panel section 302 as shown in FIG. 4(a) (4). Next, it is determined whether the conversion candidate color and the converted color have been selected. 5) If no, the conversion candidate color and the converted color are selected according to the operating procedure shown in FIG. 4(a) and (b). Execute color selection 6),
(Return to step 71 (4).

On the other hand, if the determination in step (5) is YES, the color conversion process for converting the specified specific color into the specified desired color for the image information output from the color recognition circuit 205 is executed.8) The resulting signal is subjected to predetermined image processing and output to the image recording unit 210 (9) [Second color conversion processing designation process] Hereinafter, with reference to FIGS. 6(a) and (b) and FIG. The color conversion process designation operation in the image processing apparatus according to the present invention will be explained.

FIGS. 6(a) and 6(b) are schematic diagrams showing the operation procedure for specifying the second color conversion process in the operation unit 13 shown in FIG. shows. Note that it is assumed that prescanning and recognition processing have already been completed to recognize convertible colors in a color document.

Here, when the color conversion key 328 is pressed, the panel section 3
When the color conversion setting screen is displayed at 02 (see display state transition (1)), the corresponding LED lights up.

As shown in the figure, the recognized convertible color candidates are displayed in color with corresponding hues (■ to ■ in the figure indicate color candidates).

Next, when you touch the color you want to convert (■ blue), the display on the panel section 302 changes as shown in display state transition (2) (the shaded part becomes a blinking display indicating the selected state),
When "Register" is touched, the display on the panel section 302 switches to display state transition (8) to display convertible colors. As a result, the candidate color to be converted is determined, and the process moves to the color selection process to be converted.

Next, touch the text section "yellow" and "conversion" in sequence.
The display on the panel section 302 changes display status (91, (10)
When you touch rOKJ, the panel section 30
2 switches to display state transition (11), and the display on panel section 302 returns to display state transition (1). and,
At this time, if the character "End J" on the panel section 302 is touched, the color conversion setting process ends and the process moves to the main image process.

On the other hand, when the symbol "middle" is touched in the display state transition (1) state (see display state transition (4)), the panel section 302
The display changes to the display state transition (5), and if there are convertible color candidates other than the recognized convertible color candidates as shown in the display state transition (1), the display on the panel section 302 changes to the display state Switching to transition (5).

On the other hand, when the symbol "ni" is touched in the display state transition (1), there are convertible color candidates other than those recognized as shown in the display state transition (1). If not, the panel section 302 switches to display state transition (7) in which the symbol "ni)" is displayed, indicating that there are no more conversion color candidates.

Note that the display state transition of the panel section 302 (121).

(13) corresponds to the display when the color to be converted exists other than those shown in display state transition (8), and display state transition (8)
If there are no items other than those shown, a symbol “C=” is displayed on the panel section 302.

Further, rYMcKJ on the panel section 302 is pressed to individually set the amount of YMCK.

FIG. 7 is a flowchart showing an example of the second color conversion processing procedure in the image processing apparatus according to the present invention. Note that (1) to (9) indicate each step.

First, the image reading unit 2000 prescans a color original (1), and the image processing unit 300o executes color recognition processing from the color-separated and read image information (2), and determines convertible colors (3). . Next, the recognized convertible color candidates are displayed in color in the corresponding hues on the panel unit 302 as shown in FIG. 6(a) (4). Next, it is determined whether the color to be a conversion candidate and the color after conversion have been selected. 5) If no, the color to be a conversion candidate and the color after conversion are selected according to the operating procedure shown in FIGS. Execute color selection 61 (71, return to step (4)).

On the other hand, if the determination in step (5) is YES, the color conversion process for converting the specified specific color into the specified desired color for the image information output from the color recognition circuit 205 is executed.8) , the resulting signal is subjected to predetermined image processing and outputted to the image recording unit 210 (9) [Third color conversion process designation process j Below, see FIGS. 8(a) and (b) and FIG. 9 A color conversion process designation operation in the image processing apparatus according to the present invention will be explained.

FIGS. 8(a) and 8(b) show the operation section 213 shown in FIG.
FIG. 6 is a schematic diagram showing the third color conversion process designation operation procedure in , where (1) to (13) each indicate a display state transition. It is assumed that bliscan and recognition processing have already been completed to recognize convertible colors in a color document.

Here, when the color conversion key 328 is pressed, the panel section 3
When the color conversion setting screen is displayed at 02 (see display state transition (1)), the corresponding LED lights up.

As shown in the figure, the recognized convertible color candidates are displayed in color with corresponding hues (■ to ■ in the figure indicate color candidates).

Next, when you touch the color you want to convert (■ blue), the display on the panel section 302 changes as shown in display state transition (2) (the shaded part becomes a blinking display indicating the selected state),
When "Register J" is touched, the display on the panel section 302 switches to display state transition (8) to display convertible colors.As a result, the candidate color to be converted is determined, and the process moves to the color selection process to be converted.

Next, when you touch the characters "YELLOW" and "CONVERT" displayed in yellow backlight in sequence, the display on the panel section 302 switches to display state transition (91, (101), and "OK" appears.
'', the display on the panel section 3o2 switches to display state transition (11), and the display on the panel section 302 returns to display state transition (1).

At this time, if the characters "end" on the panel section 302 are touched, the color conversion setting process ends and the process moves to the main image process.

On the other hand, in the state of display state transition (1), if you touch the symbol "ni" (see display state transition (4)), the panel section 30
2 switches to display state transition (5), and if there is a convertible position candidate other than the convertible position candidate recognized as displayed in display state transition (1), the panel unit 302
The display changes to display state transition (5).

On the other hand, in the state of display state transition (1), when the symbol "ni" is touched, there are convertible position candidates other than those recognized as shown in display state transition (1). If not, the display state changes to display state transition (7) in which the symbol r m J is displayed on the panel portion 3.degree. 2, indicating that there are no more conversion color candidates.

Note that the display state transition (12) of the panel section 302.

(13) corresponds to the display when the color to be converted exists other than those shown in display state transition (8), and display state transition (8)
If there are no items other than those shown, the symbol “middle” is displayed on the panel section 302.

Further, rYMCKJ on the panel section 302 is pressed when individually setting the amount of YMCK.

FIG. 9 is a flowchart showing an example of the third color conversion processing procedure in the image processing apparatus according to the present invention. Note that (1) to (9) indicate each step.

First, the image reading unit 2000 briefly scans a color original (1), the image processing unit 3000 executes color recognition processing from the color-separated and read image information (2), and determines convertible colors (3). . Next, the recognized convertible color candidates are displayed on the panel unit 302 in the corresponding hues as shown in FIG. 8(a) (4). Next, it is determined whether the color to be a conversion candidate and the color after conversion have been selected. 5) If no, the color to be a conversion candidate and the color after conversion are selected according to the operating procedure shown in FIGS. Execute the color selection 6), (7), display the corresponding converted color in the corresponding hue, and return to step (4).

On the other hand, if the determination in step (5) is YES, the color conversion process for converting the specified specific color into the specified desired color for the image information output from the color recognition circuit 205 is executed.8) , the resulting signal is subjected to predetermined image processing and output to the image recording section 210 (9). FIG. In the figure, 10o1 is a digitizer main body, 1002 is a coordinate detection plate, and is configured to be able to specify an arbitrary area on a document starting from a reference point OP, or to set a magnification.

A point pen 1003 can be operated to designate coordinates on the coordinate detection plate 10Q2 to designate color conversion for any area on the document.

[Fourth Color Conversion Process Designation Process] FIG. 11 is a flowchart showing an example of the fourth color conversion process procedure in the image processing apparatus according to the present invention. Note that (1) to (20) indicate each step.

First, the image reading unit 2000 bliscans a color original (1), and determines whether there is an input from the digitizer main body 1001 (2) if YES, the area information specified by the point pen 10o3 is accepted (3).
If No, as shown in Fig. 12, the image information read through color separation is subjected to color distribution processing and histogram processing) (4
), to process whether there is a color gamut where pixels are concentrated, set the number of colors i5), and determine whether the number of colors i is rOJ movable6), if NO, calculate the difference from the previous color. value wide
7) and determine whether the value w i de 1 is greater than the preset value X 8) N
If YES, proceed to step (12) and onwards; if YES, set the difference from the next color to the value wide29), set the value wide
2 is larger than the preset value 11), the number of colors i is "1"
Decrement 12) and return to step (6).

On the other hand, if YES in step (6), the number of convertible colors j
13), determine whether the number of colors j is rOJ 14), and if No, determine the color name from the position from the front hem to the back hem of the color image 15), the color Decrement the number j by "1" (16) and return to step (14).

On the other hand, if YES in step (14), the operation unit 213
17) to display possible conversion options 17), perform color conversion setting operations 18), perform color conversion processing (19), and output the final color-converted image from the image recording unit 210.
0), the process ends.

FIG. 12 is a diagram illustrating the principle of determining converted colors in the image processing apparatus according to the present invention, in which the horizontal axis represents color or brightness, and the vertical axis represents the number of pixels.

As can be seen from this figure, from the histogram in which pixels are concentrated in each color gamut, when the value wide1.2 shown in the diagram is equal to or greater than a certain value, it can be determined that the color is convertible.

[Effects of the Invention] As explained above, the present invention provides a color recognition means for recognizing convertible colors from read color document image information;
Since an operation unit is provided that can display the color convertible recognized color recognized by the color recognition means and the desired conversion color information for this color convertible recognized color, when the operator executes the conversion color designation process, , it is possible to provide convertible recognized colors and corresponding conversion color information in advance, eliminating the erroneous color conversion specification operations that are caused when color conversion specification operations are left to the operator as in the past, and simplifying the specification operations during color specification processing operations. The burden can be significantly eased.

In addition, the operation unit is configured to display the color information to be converted and the conversion color information to be converted in text, so anyone can easily display the color information to be converted and the conversion color information to be converted. Can be recognized visually.

Furthermore, the operation unit is configured to display either the color information to be converted or the conversion color information to be converted in color with text and hue, so that the recognized color or conversion color can be recognized as hue or text. You can easily specify color conversion.

In addition, the operation unit is configured to display both the color information to be converted and the conversion color information to be converted in hue, so that the recognition color or conversion color can be reflexively recognized as hue, and incorrect color conversion can be specified. This has the effect of significantly reducing the operational burden.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view illustrating the configuration of an image processing apparatus according to an embodiment of the present invention, FIG. 2 is a control block diagram illustrating the configuration of the controller shown in FIG. 1, and FIG. , a plan view illustrating the configuration of the operating section shown in FIG.
Figures (a) and (b) are schematic diagrams showing the operation procedure for specifying the first color conversion process in the operation unit shown in Figure 3, and Figure 5 is a schematic diagram showing the first color conversion process in the image processing device according to the present invention. Flowchart showing an example of the processing procedure, FIGS. 6(a) and (b)
is a schematic diagram showing the second color conversion processing designation operation procedure in the operation unit shown in FIG. 7, FIG. 7 is a flowchart showing an example of the second color conversion processing procedure in the image processing apparatus according to the present invention, 8(a) and 8(b) are schematic diagrams showing the operation procedure for specifying the third color conversion process in the operation section shown in FIG. 9, and FIG. A flowchart showing an example of a color conversion processing procedure, FIG. 10 is a plan view illustrating an example of a digitizer placed on the top surface of the image reading unit shown in FIG. 1, and FIG. 11 is an image processing apparatus according to the present invention. FIG. 12 is a flowchart showing an example of the fourth color conversion process procedure in FIG. In the figure, 202 is an image sensor, 205 is a color recognition circuit,
206 is a color conversion circuit, 211 is a convertible color recognition circuit, 2
13 is an operation unit, and 214 is a CPU. 4.

Claims (4)

[Claims] (1) In an image processing device that analyzes read color document image information and converts it into desired color image information, a color recognition device that recognizes a convertible color from the read color document image information; An image processing device comprising: an operation unit capable of displaying a recognized color convertible recognition color and desired conversion color information for the color convertible recognition color. (2) Claim (2) characterized in that the operation unit displays the color information to be converted and the conversion color information to be converted in text.
1) The image processing device described above. (3) The image processing apparatus according to claim 1, wherein the operation unit displays either the color information to be converted or the conversion color information to be converted in color using characters and hues. (4) The image processing apparatus according to claim 1, wherein the operation unit displays both color information to be converted and conversion color information to be converted in hue.