JPH07107314A - Picture processing method and device - Google Patents

Abstract

PURPOSE:To correctly recognize a picture at the time of outputting the picture in the specific color of a color chart actually used by a user by displaying the position of the specific color and outputting the picture when chrominance component data are outside the color reproducing range of a picture forming device. CONSTITUTION:A color chart name, index number for specifying a desired color, and output device name are indicated by a color chart picker 407 of a host computer 400. A picture storage and synthesizing device 700 reads the chrominance component data and the status information from a file, checks the status information, and judges whether or not the chrominance component data are within the color reproducing range of the designated output device. The host computer 400 uses the chrominance component data outside the color reproducing range as, for example, R=0, G=0, and B=0, and transfers an image to the picture storage and synthesizing device 700, and the image is outputted by a picture forming device 1000. The position of the chrominance component data outside the color reproducing range is made white, so that the user can know the position.

Description

Detailed Description of the Invention

[0001]

[Industrial application] Color of the image created on the host,
The present invention relates to an image processing method and apparatus for matching the output color of an output device.

[0002]

2. Description of the Related Art Conventionally, in order to make the color of an original document and the color of a printed output the same, each printing company has issued a color chart containing several tens to several hundreds of colors such as Pantone (registered trademark). There is. There is an image processing apparatus capable of performing creation work such as image editing while imaging an image output from an output device by designating a color number on a host using this color chart.

[0003]

However, the conventional image processing apparatus has the following drawbacks. That is,
When handling images between different devices, the color reproduction range is different due to differences in the coloring principle of each device, differences in the color signals handled, differences in the color materials used, etc. However, there is a drawback that the image output by the output device is different from the user's image. This is because not all colors on the color chart can be reproduced by the output device.

Since each output device has a different color reproduction range, when an image is created using a color chart,
The user has a drawback that he cannot know which color on the color chart is out of the color reproduction range.

The present invention has been made in view of the above point, and when the color component data for outputting the specific color of the color chart by the image forming apparatus is outside the color reproduction range of the image forming apparatus, the specific color An object of the present invention is to display a color position so that a user can recognize it and output an image so that the image can be correctly recognized when the user outputs a specific color of a color chart actually used.

It is another object of the present invention to allow a user to recognize that a desired color is out of the color reproduction range in the process of selecting the desired color in the color chart.

Another object of the present invention is to allow a user to easily determine whether or not a desired color is subjected to image processing such as color space compression.

It is another object of the present invention to obtain color information corresponding to an output device so that when a desired color cannot be output, it can be easily switched to another output device.

[0009]

In order to achieve the above object, the image processing method of the present invention has the following configuration.

In the image processing method of the first invention of the present application, when the image forming apparatus outputs an image including a predetermined color designated in the color chart, the predetermined color is outside the color reproduction range of the image forming apparatus. When the color is determined to be the color, the position of the predetermined color is displayed in the image formed by the image forming apparatus.

The image processing method of the second invention of the present application is characterized in that in the process of selecting a desired color in the color chart, it is informed whether the specified desired color is outside the color reproduction range of the output device. And

The image processing method according to the third invention of the present application, in the process for selecting a specific color of the color chart,
It is characterized by comprising means for designating an output device.

[0013]

With the above arrangement, in the image processing of the first invention of the present application, when the color component data for outputting the specific color of the color chart by the image forming apparatus is outside the color reproduction range of the image forming apparatus, By displaying the position of the specific color so that the user can see it and outputting the image, the image can be correctly recognized when the user outputs the image in the specific color of the color chart actually used.

An object of the image processing of the third invention of the present application is to enable a user to recognize that a desired color is out of the color reproduction range in the process of selecting a desired color in a color chart.

Further, according to the present invention, the user can easily determine whether or not a desired color is subjected to image processing such as color space compression.

In the image processing of the third invention of the present application, it is also an object to obtain color information corresponding to an output device so that when a desired color cannot be output, it can be easily switched to another output device.

[0017]

Embodiments of the present invention will be described in detail below with reference to the drawings.

As one embodiment of the present invention, a system in which a first external device (host computer), a second external device (image storage / synthesis device) and an image forming device such as a digital color copying machine or a color printer are combined will be described. However, the present invention is not limited to this, and for example, the image storage / synthesis device and the image forming device may be integrated.

FIG. 1 is a block diagram of a system using a color image storage / synthesis apparatus according to an embodiment of the present invention. The system of this embodiment has a digital color image reading section ( A digital color copying machine 100 including a color scanner 100) and a digital color image printing unit (hereinafter, color printer) 300 that prints out a digital color image.
The image storage / synthesis device 700 and the control host computer 400.

FIG. 2 shows the structure of the control host computer 400.

The host computer 400 is a SCSI interface controller 420 for exchanging command codes / image data with the image storage / synthesis device 700.
A CPU 405 for central control, a hard disk controller 450 for temporarily registering image data and storing various data, a hard disk 451, a memory 406 of ROM / RAM, and a mouse 431, a keyboard 441 as an instruction input means from an operator. , Color display 412 for layout / editing / menu display, display memory 411, display controller 41
0 and image layout on display memory
An image editing controller 413 for editing, a rasterizer controller 461 for creating an image, and a frame memory 460 for the image.

When the user actually confirms the selection of the color chart, the standard color chart name, its color index number and the corresponding actual color are displayed on the display 412, and the color index of the color required by the user is displayed. A color chart picker for selecting a number is activated and displayed, and the user gives an instruction to the screen with a keyboard or a mouse.

FIG. 3 shows an image storage / synthesis device 700 according to an embodiment of the present invention.

This apparatus is roughly divided into an image controller 710 for controlling the entire image storage / synthesis apparatus 700,
Data 100-1 to 100-2 of the color chart database, which is color information of the output device corresponding to the specific color of the color chart, for reproducing the specific color of the color chart on the output device, and a database controller for managing the data. 750, a raster image memory 760 for registering raster image data and a memory management controller 720 for managing the raster image data, and an image editing / layout controller 730 for laying out a raster image at an arbitrary position at the time of output and performing enlargement / reduction processing.

If there is a color space compression controller 780 and the color chart data is outside the color reproduction range, color space compression can be performed.

As a color chart, for example, a Pantone (registered trademark) color chart is famous, but other printing companies also publish color charts.
This color chart includes tens to hundreds of colors depending on the type.

As an external interface, a SCSI controller 740 for controlling a SCSI interface with a host computer, a floppy disk controller 741 for fetching data of a color chart database from the outside, image data and commands for the digital color copying machine 1000 are provided. There is a color digital interface controller 790 that interacts.

FIG. 4 is a diagram showing an outline of a procedure for matching a standard color chart.

The color chart picker 407 of the host computer 400 uses the color chart name that the user wants to use, the index number that identifies the desired color in the color chart, the name of the output device that should output the color image, and whether or not to perform color space compression. Etc. A specific color code is sent from the host computer 400 to the image storage / synthesis device 700 as a database access SCSI command 413-.
11, 413-12. In this embodiment, the specific color code includes a chart name, an index number, an output device name, and whether or not to perform color space compression, and is transmitted from the host computer 400 to the image storage / synthesis device 700. The image storage / synthesis device 700 reads color information including color component data and its status information (that is, information indicating whether a color is within the color reproduction range of a specified output device) from a file according to a specific color code. The image controller 710 checks the status information to determine whether this color is within the color reproduction range of the designated output device. When it is determined that the color space is outside the color reproduction range and the user has instructed to perform the color space compression, the color space compression controller 780 performs the color space compression. RGB component data read from a file, status information and RG after color space compression when color space compression is performed
The B component data is transmitted to the host computer 400.
The host computer 400 displays the transmitted information on the color chart picker. The user confirms the display, and if the color is acceptable, the OK button 40 shown in FIG.
Press 0-5. Otherwise, Cancel button 4
Press 00-6 to specify a specific color and start the process again. If it is good, a color image is generated on the frame memory 460 using the obtained RGB component data.

The color chart picker 407 allows the user to specify the conditions, so that the process is repeated for all the colors.
For example, if there are No21 and No102 as shown in the figure,
The above process is repeated twice. When the above process is completed for all colors, the print command and frame memory 460 are displayed.
The RGB image data stored in is transmitted.

In the image storage / synthesis device 700, the transmitted command of the specific color is decoded, and the database controller 750 searches the internal storage medium 700 for color chart data that matches the index number of the designated color chart. However, if it is determined from the RGB component data corresponding to the index number or the status information of the color information that the color space is not compressed and it is determined that the color space sky compression is not performed, the color component outside the color reproduction range is displayed. When the image data is transferred from the host 400 to the image storage / synthesis device 700 by storing the data in the frame memory 460, for example, with R = 0, G = 0, B = 0, and output by the image forming device, the color reproduction range is obtained. The position of the outside color component data turns white, and the user knows the position of the color component data outside the color reproduction range. It is possible.

Therefore, the color chart database for outputting the color represented by the color code in the output device is stored in the internal storage medium 75 of the image storage / synthesis device 700.
Since the color chart name is stored in 1, the specific color designated by the index number is output by the output device, the host computer 400 does not need to hold the color chart data, and the load on the host is reduced and the efficiency is improved.

Since a plurality of types of color chart data can be stored in the internal storage medium 751, it is possible to support a plurality of types of color charts.

Since the image storage / synthesis device 700 is provided with the color space compression controller 780, the color space compression processing can be performed by the image storage / synthesis device 700, and the image processing is shared and can be efficiently processed.

In the color space compression processing, it is possible to determine whether or not the color reproduction range of the output device is within the color reproduction range of the output device based on the status information of the color information corresponding to the specific color code selected by the user. Color chart picker 407 of host computer 400 by user
Since the color space compression is performed in accordance with the instruction as to whether or not to perform the color space compression, the user's opinion is taken into consideration for the colors outside the color reproduction range of the output device.

Further, since the user confirms the obtained RGB component result, the user can obtain a satisfactory color.

Further, for example, an N type color chart database 800-1 for the A engine and a P type color chart database 800-2 for the A engine.
Internal storage by inputting color chart data information to the image storage / synthesis device 700 by a database external storage medium 800 such as a floppy disk in which other color chart data not stored in the image storage / synthesis device 700 is stored. The color chart data in the medium can be rewritten or added, and is managed by the database controller 750.

Therefore, it is possible to cope with the output device which cannot be dealt with at first by rewriting or adding the color chart data.

Further, similarly, it becomes possible to deal with a color chart which could not be dealt with at first.

Therefore, even if the user does not register the color chart including the desired color in the image storage / synthesis device 700 or does not support the output device used by the user, the desired color is included. By registering the color chart data stored in the image storage / synthesis device 700 with the database external storage medium 800, the user can obtain the desired color.

FIG. 5 shows a rasterizer procedure for expanding the code information on the memory by using the RGB components of the color chart.

An image is edited on the host computer 400 by controlling the image editing controller 413, the rasterizer 461, the frame memory 460 and the like by the CPU. At that time, when the user activates the color chart picker and designates a color of a certain specific color, the host computer 400 accesses the image storage / synthesis device 700 to access the database of the chart name, index number, and information on whether or not to perform color space compression. Commands 413-11, 413-1
Communicate to 2. The image storage / synthesis device 700 decodes the transmitted command and, based on the color chart data held therein, a color such as RGB data for forming a specific color corresponding to the transmitted information by the image forming device. The information is transmitted to the color information host computer 400 including the color status information indicating the component and the device color reproduction range. The host computer 400 uses the R of the transmitted information.
The GB component data is stored in the frame memory 460 through the rasterizer 461. By performing this process for all colors, the image desired by the user can be obtained.

The color chart picker has the structure shown in FIGS. 6 and 7, and FIG. 6 is a view showing a display screen (display of the host computer) of the color chart picker when color reproduction is possible, and FIG. 7 is color reproduction. It is a diagram of the color chart picker when it is over, and the host computer 40
0 is displayed on the display. Here, individual configurations of the color picker for the standard color chart will be described. 400
-1 indicates the name of the currently selected standard color chart, which is composed of a menu from which a plurality can be selected, and is selected by the mouse 431.
A sample 400-2 displays a plurality of color samples belonging to the selected color chart, and is composed of a color 400-3 serving as a reference for each display and an index number 400-4 assigned to each color. When the user selects the index number with the mouse 431, the selection is notified 400-13. A variator 400-12 is attached next to the color swatch to indicate which reference position where a plurality of indexes are displayed indicates which position among hundreds of indexes is displayed in the entire color chart. You can browse hundreds of indexes by moving up and down.

In 400-7, when the color information of the index actually selected obtained from the color chart data of the image storage / synthesis device 700 is input to the output device, what level is the RGB component of the color data? Is showing. In addition, a portion 400-9 indicating information about the selected color, a switch 400-10 for performing color space compression as processing when the selected color exceeds the color reproduction range of the printer, From the part 400-11 for selecting the type / type of the printer for print output from the menu, the confirmation button 400-5 for confirming the selected color, and the button 400-6 for canceling the standard color chart A color picker for is constructed.

Therefore, by using the color chart picker, the user can easily output the desired color by the output device by designating the color chart name, index number and output device.

Further, the user can select whether or not to perform color space compression for the color component outside the color reproduction range of the output device, and the RGB component data and the color space compression when the color space compression is not performed are performed. RGB after compression if
The component data is reported numerically. In addition, RGB component data of colors outside the color reproduction range of the output device is R = 0, G = 0,
A value such as B = 0 indicating to the user that the color reproduction range is out may be used.

Color chart data 100-1 / 100
The file format of -2 is shown in FIG.

The file format is roughly divided into a header section 150 and a color data section 151.

Color chart data 100-1 / 100
-2, the header part has a structure of 128 bytes as shown in the header block 150 of FIG. 8B.
File function code 1 showing the function of the file
52, total file size 153/154 indicating total size of color chart data file, header recognition code and header code 155 indicating header length and length 156, header length 156, file name 157 for managing color chart data, color Corresponding device code 158 for identifying which model / type of printer (for color copier) the chart data is for, color chart name 159 indicating the name of the standard color chart, and what color is the color component of the color chart data. Code 160 indicating whether it is for space
(However, although the RGB color space is used in this embodiment, the present invention is not limited to the RGB color space and may be a color space such as a Y, I, Q color space or a C, M, Y, K color space. The total number 161 of index codes in the color chart, RGB indicating the arrangement order of RGB color components
Data unit 162 Database version No. 16
It consists of 3.

Therefore, the color chart data can be efficiently managed by managing the color chart data by the information that can specify the color chart, the information that can specify the color and the information that can specify the corresponding output device as described above. .

Further, the color data portion 151 has a variable length and can be calculated from the file total size of the header portion, and as shown in FIG. 9, it has a 2-byte area corresponding to the index number of the color chart. The combination of the index codes 170 and 171, the RGB color component 3 bytes 172, 173 and 174, and the status information 175 of the color corresponding to the index corresponds to the total number of index codes, for example, the number of colors of the color chart. Just take the form that continues.

FIG. 10 is a flow chart showing the flow of processing when accessing the color chart data.

DT running on the host computer
Is the software of P displayed the standard color chart name, its color index No and the corresponding color, and is the user instructed to start the color chart picker that allows the user to select the required color / color index No? The determination is made (200-1).

When the color chart picker is activated, a color chart picker process described later with reference to FIGS. 11, 12, and 3 is performed (200-2).

From the image storage / synthesis device 700, R, which can be reproduced by the color copying machine 1000 corresponding to the index of the color chart designated on the color chart picker,
The G and B color information is transmitted (200-3).

Upon confirmation from the color chart picker, the image editing controller 413 uses the RGB components sent from the image storage / synthesis device 700 as the rasterizer 4.
An image designated by the user is created using the RGB components (460-1).

Examples of this image include the color of a frame and the color of a character. The RGB color components are RGB data whose reproduction matches the color of the designated standard color chart when output by the designated color copying machine.
An image created using this color component is created on the frame memory 460 (200-4).

When the host computer side wants to obtain the data of a plurality of standard color charts, the procedure by the color picker described later is repeated to issue the database access command 413-12 to the image storage / synthesis device 700, and the RGB component data 460 thereof. The process of returning -12 is repeated as many times as necessary (200-
5).

The image editing controller 413 creates an image specified by the user using the rasterizer 461 and determines whether to create a final image 2
00-6.

D running on the host computer 400
The TP software issues a command to the image editing controller 413 to print out the raster image data in which the image is created as described above. This print command is sent via the SCSI interface.
It is issued as a Printimage command 414 to the image storage / synthesis device 700 (200-7).

The raster image data created thereafter is transferred from the frame memory 460 to the image storage / synthesis device 700 200-8, and the image main controller 710.
This causes the memory management controller 720 to register the raster image data in the raster image memory 760 (200-9).

The raster image data once registered is
The image editing / layout controller 730 of the image storage / synthesis device 700 lays out the image at a specified position and applies enlargement / reduction processing, and the color digital interface controller 790 transfers the image data to the specified digital color copying machine 1000 and the host. A raster image created by a computer is printed out (200
-10).

In the above 200-1, if it is not determined to activate the color chart picker, DT
Processing on the P software is continued (200-11).

The process of the color chart picker shown in FIG. 10 will be described in detail with reference to FIGS. 11, 12, 13, and 14.

It is determined whether an instruction to activate the color chart picker has been received (202-1).

If the color chart picker is not started, the process is stopped.

When the color chart picker is activated, the instruction of the output device such as the color copying machine for outputting is determined (202-2).

It is determined whether the automatic color space compression function is turned on (202-3).

The type designation of the standard color chart is discriminated (202-4).

The necessary color chart color designation is determined (202-5).

The color picker passes the standard color chart name selected by the user and its color index number, the printer model / type, and the color space compression flag switch to the image editing controller 413, and the image editing controller 413 is based on this. 413 is a database access command 413 via the SCSI controller 420.
In -11, the above information is issued to the image storage / synthesis device 700 (202-6).

The database access command is sent to the image controller 710 via the SCSI interface controller 740 of the image storage / synthesis device 700.
Database controller 7 which is passed to the server and analyzes the command and manages the standard color chart database.
Passed to 30. The database controller analyzes the parameters of the database access command 413-11 and extracts the color chart name specified by the user and the above-mentioned accompanying information such as the index number of the color chart, and the color chart data 100-1 managed by the database controller. The file of / 100-2 is searched (202-7).

Then, the color data block portion 151 of the found color chart data is sought, and the index code 170/171 matching the index number of the designated color chart is searched. After finding a match, the RGB color component data 172/173/174 corresponding to the index number and the status information 175 thereof are read from the file. Here, the image main controller 710 checks the content of the status information and determines whether this color is within the color reproduction range of the designated printer. This information is
It is registered when the color chart data is created in advance (202-8).

As a result of checking the status information, it is judged whether or not it is outside the color reproduction range (202-9).

In FIG. 12, the color of the selected index is
7 is a flowchart of a process when the color reproduction range of the printer is exceeded.

The image controller 710 in the image storage / synthesis device 700 checks the contents of the status information from the database controller, and if it judges that this color exceeds the color reproduction range of the designated printer, the following procedure is performed. To do.

First, it is checked whether the flag for color space compression is turned on by the specification by the database access command (203-1).

When it is off, it will be described later with reference to FIG.

When on, the color space compression controller 780 performs color space compression processing on the color components obtained from the database. This color space compression is the process of converting the data outside the color reproduction range to the data within the optimum range that can be reproduced by the printer. In this case, the color reproduction of the color chart is changed to the reproducible color of the printer. It will be converted (203-2).

In this case, via the SCSI interface to the host computer 400, a flag indicating that the specified color is out of the reproduction range, the color space compressed RGB component data, and the color chart data The original RGB component data 460-11 is returned (203-
3 / 203-4 / 203-5).

As shown in FIG. 7, the color picker displays a color status information on the picker from the flag indicating that it is out of the color reproduction range, and displays the index number 400-9 in FIG. Display that the color exceeds the color reproduction range on the specified printer (20
3-6).

Further, a warning sound may be given together with the display.

When the display of FIG. 7 is performed, the index number indicating which color among the colors of the selected index exceeds the color reproduction range is displayed. As a result, the user can change the color to a color within the color reproduction range and specify the color.

Then, the values of the original RGB component data 460-11 on the database are displayed on the color component display section 400-7, and the color space compressed RGB component data is displayed on the converted color component display section 400-8. Display (203-
7).

Then, the RGB component data 460-1
The value of 1 is displayed on the color component display unit 400-7 (203
-8).

The user confirms this and presses the confirmation button 400-5 (203-9).

FIG. 13 is a flow chart when the designated color is within the reproduction range. A flag indicating that it is within the reproduction range and its RGB component data 46 via the SCSI interface to the host computer.
Returns 0-11 (205-1 / 205-2).

From the flag indicating that the color picker is within the reproduction range sent to the database command, the color of the index number is designated on the color status information display portion 400-9 on the color chart picker by the designated printer. Is displayed to indicate that color reproduction output is possible (205-3).

FIG. 14 is a flowchart when the flag for performing color space compression is OFF in the determination 203-1 of designation by the database access command. As described above, it is determined that the color reproduction range is outside the color reproduction range. The flag shown and the value of the original RGB component data on the database are returned to the color chart picker, and the color of the index number exceeds the color reproduction range on the designated printer on the status information display section 400-9 on the color chart picker. Is displayed (204-1 / 2044-).
2 / 204-3).

In this way, the color information of the selected color is confirmed.

Managed in the image storage / synthesis device 700,
The above-mentioned color chart data has a unit that can cope with an increase in the types of color copying machines connected to the image synthesizing device, and can be downloaded into the image storing and synthesizing device by a small storage medium 800. There is.

FIG. 15 shows the procedure for adding this database.

A storage medium in which the color chart data to be added is stored, in this case, the floppy disk 800.
Is set in the floppy disk controller 741 of the image storage / synthesis device (201-1).

The database controller 750 reads the information of the header portion of the data information of the color chart of the floppy disk 800 (201-2).

Color chart data 100-1 / 100
-File Total Size15 indicating the total size of the color chart data file of the header part of -2
3/154, file name 15 for database management
7. Check the above-mentioned contents such as the color chart name 159 indicating the name of the standard color chart and the total number 161 of index codes of the color chart (20
1-3).

The image main controller 710 transfers the database information of the floppy disk 800 to the database controller 750 and registers it as a color chart data with a file name 157 for management of designated color chart data (201-4). ).

The total number 161 of the chart name 159 / index code is the database controller 7
It is registered in the management file inside 50 (201-
5).

This downloaded standard color chart data is stored in the color chart picker described above.
It becomes possible to access by the same procedure, and expandability corresponding to a new standard color chart or a new color copying machine becomes possible.

Besides the present embodiment, the standard color chart data access from the host computer is
Instead of a single user interface like SI
Multi-user access is also possible by changing to a LAN interface.

In the above embodiment of the present invention, R
Although only GB data is used, for example, C, M, Y, K
Alternatively, color data such as Y, I, and Q may be used.

The color data used may be one standard color space corresponding to a plurality of image forming apparatuses.

Further, the number of color data used is not limited to one, and a plurality of color data may be used.

The output device is not limited to the digital color copying machine, but may be an image forming apparatus such as a color printer or a color display.

Further, the image forming apparatus is not limited to the laser beam printer, but may be a so-called bubble jet printer using a head of a type that ejects droplets by utilizing film boiling due to thermal energy.

The first external device is not limited to the host computer and may be, for example, a scanner.

The method for rewriting or adding the color chart database is described in the database external storage medium 80.
The value is not limited to 0, and may be input from an operation unit (not shown), an IC card, or the like, or may be sent from the host computer 400.

The image storage / synthesis device 700 may be incorporated inside the image forming device.

Further, the user may be allowed to select from a plurality of color space compressions on the color chart picker, and the image storage / synthesis device 700 may also be provided with a plurality of corresponding color space compression means.

Further, the above-described processing is not limited to one color at a time, and a plurality of colors may be processed at one time.

That is, on the display screen of the color picker shown in FIGS. 6 and 7, it is displayed whether or not printer reproduction is possible for one color selected as 400-13, and when there are a plurality of selected colors. Determines whether the printer can be reproduced for each of the plurality of colors. However, the present invention is not limited to this, and when there are a plurality of selected colors, the printer can print the selected plurality of colors. Whether or not there is 1
You may make it display on one screen.

The information included in the above-mentioned color code is not limited to the chart name, index number, output device name, and whether or not color space compression is performed. Information other than one information may be included.

When the above-mentioned color component data is out of the color reproduction range of the output device and it is instructed not to perform the color space compression processing, the position of the color component data is displayed in white. Not limited to this, for example, characters may be used, or only the outer edge of the color component may be white.

[0113]

As described above, according to the first invention of the present application, when an image including a predetermined color designated in the color chart is output by the image forming apparatus, the predetermined color is the image formation. When it is determined that the color is out of the color reproduction range of the apparatus, the position of the predetermined color is displayed in the image formed by the image forming apparatus, whereby a specific color of the color chart is displayed. If the color component data for outputting the image is outside the color reproduction range of the image forming apparatus, the user can actually use it by displaying the position of the specific color so that the user can see it and outputting the image. The image can be correctly recognized when it is output in a specific color of the existing color chart.

According to the second invention of the present application, by notifying whether the specified desired color is outside the color reproduction range of the output device in the process of selecting the desired color in the color chart, An object of the present invention is to allow a user to recognize that a desired color is out of the color reproduction range in the process of selecting a desired color in a color chart.

Further, according to the present invention, it is possible for the user to easily determine whether or not a desired color is subjected to image processing such as color space compression.

According to the third invention of the present application, in the process for selecting a specific color of the color chart,
By providing a means for designating an output device, it is an object to obtain color information corresponding to the output device so that when a desired color cannot be output, it can be easily switched to another output device.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is a configuration diagram of a host computer side according to an embodiment of the present invention.

FIG. 3 is a configuration diagram of an image storage / synthesis device side according to an exemplary embodiment of the present invention.

FIG. 4 is a diagram showing a matching procedure of a standard color chart according to an embodiment of the present invention.

FIG. 5 is a diagram showing a rasterizing procedure using RGB components of a color chart according to an embodiment of the present invention.

FIG. 6 is a diagram showing a configuration (when color reproduction is possible) of a standard color chart picker according to an embodiment of the present invention.

FIG. 7 is a diagram showing a configuration of a standard color chart picker according to an embodiment of the present invention (when a color reproduction area is exceeded).

FIG. 8 is a diagram showing a configuration of the entire / header portion of a color chart database according to an embodiment of the present invention.

FIG. 9 is a diagram showing a configuration of an RGB data section of a color chart database according to an embodiment of the present invention.

FIG. 10 is a diagram showing an access procedure of a color chart database according to an embodiment of the present invention.

FIG. 11 is a diagram showing a processing procedure (1) of a color chart color picker according to an embodiment of the present invention.

FIG. 12 is a diagram showing a processing procedure (2) of a color chart color picker according to an embodiment of the present invention.

FIG. 13 is a diagram showing a processing procedure (3) of a color chart color picker according to an embodiment of the present invention.

FIG. 14 is a diagram showing a processing procedure (4) of a color chart color picker according to an embodiment of the present invention.

FIG. 15 is a diagram showing a procedure of a database additional installation process according to an embodiment of the present invention.

[Explanation of symbols]

 400 host computer 700 image storage / synthesis device 710 image controller 720 memory management controller 730 image editing / layout controller 740 SCSI controller 741 floppy disk controller 750 database controller 751 internal storage medium 760 raster image memory 780 color space compression controller 790 color digital interface controller

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Claims (8)

[Claims] 1. When outputting an image including a predetermined color specified in a color chart by an image forming apparatus, when the predetermined color is determined to be outside the color reproduction range of the image forming apparatus. Is displaying the position of the predetermined color in the image formed by the image forming apparatus. 2. An image processing method, wherein in the process of selecting a desired color in a color chart, whether or not the designated desired color is outside the color reproduction range of the output device is notified. 3. In the step, if the designated desired color is outside the color reproduction range of the output device, it is possible to select whether or not to perform color space compression.
The described image processing method. 4. When selecting to perform color space compression,
3. The image processing method according to claim 2, wherein image formation is performed after performing color space compression processing on the color component data outside the color reproduction range of the output device within the color reproduction range of the output device. 5. The position of the desired color outside the color reproduction range in the output image is displayed depending on the case where the user selects not to perform color space compression. Image processing method. 6. The image processing method according to claim 2, further comprising setting means for selecting the color space compression from a plurality of color space compression methods. 7. An image processing method, comprising means for designating an output device in a process for selecting a specific color of a color chart. 8. Designating means for designating a desired color of a color chart, and determining means for determining whether or not the color component data for outputting the designated color on the output device is within the color reproduction range of the output device. And an image processing device that displays the position of the desired color determined to be outside the color reproduction range by the determination device when displaying the image including the desired color in the image. .