JP4117150B2 - Color conversion apparatus and color conversion program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a color conversion device that performs color conversion processing by performing coordinate conversion of coordinates representing the color of each object on a page on which one or more objects are arranged, and the computer operates as such a color conversion device. It relates to a color conversion program.
[0002]
[Prior art]
Conventionally, one or more objects such as print page data described in PDL (Page Description Language), Web page data described in HTML (HyperText Markup Language), etc. Page data representing the arranged pages is known. Here, the page data for printing will be described as an example of the page data.
[0003]
Conventionally, when creating image data for printing in the printing field, editing is performed by placing objects such as images, characters, figures, etc. on a printed page on a DTP (DeskTop Publishing) editing application installed on a computer. An editing application data is created by performing work, and page data described in, for example, a page description language is created based on the editing application data, and the RIP (Raster Image Processor) that develops the page data into raster image data. A so-called RIP system that creates image data for printing in which page data is rasterized by outputting is used.
[0004]
The page data created based on the editing application data described above is basically an RGB color space composed of three colors of R (Red: red), G (Green: green), and B (Blue: blue). Page data in which the color of the object is defined. On the other hand, page data handled on the printing machine side is a printing machine composed of four colors C (Cyan: Cyan), M (Magenta), Y (Yellow: Yellow), and K (Black: Black) used for printing. This is page data in which colors are defined in the dependent CMYK color space. Therefore, in order to be able to handle the page data in which the color of the object is defined in the RGB color space created based on the editing application data, the page data in which the color is defined in the RGB color space, It is necessary to perform color conversion to page data in which colors are defined in a CMYK color space having printing characteristics.
[0005]
In this color conversion, the input profile describing the relationship between the image data and the color expressed by the input device corresponding to the input device, and the color expressed by the image data and the output device corresponding to the output device. Knowing the output profile describing the relationship, creating a color conversion definition (hereinafter referred to as a device link profile) consisting of a combination of these input profile and output profile, and based on this device link profile By performing color conversion processing, color conversion suitable for an output device such as a printing press is performed.
[0006]
[Problems to be solved by the invention]
Here, the above-described color conversion processing is performed only on images such as photographs and illustrations in which color reproduction is regarded as important among the objects arranged on the page. Color conversion processing was not applied to the path.
[0007]
However, in recent years, there has been a demand for color conversion processing not only for images among objects placed on a page, but also for text and paths that are objects other than images to match the color of the entire page. As color conversion processing from one color space to another color space is applied to the entire page, the color conversion processing is performed for each object such as an image, text, or path placed on the page. It is applied independently.
[0008]
Therefore, when the color conversion process is performed for each object, the above-described device link profile is created for each object, so that it takes time for the color conversion process.
[0009]
In addition, when color conversion processing is performed only on an image, the ratio of the time for creating a device link profile used for the color conversion processing to the total processing time for the color conversion processing is compared. There was little.
[0010]
However, there are cases where there are a large number of texts and paths expressed in one color in the page. Even when color conversion processing is performed on such text and paths expressed in one color, the above-mentioned is described. Device link profiles are created for these individual texts and paths. Therefore, when color conversion processing is performed on all objects arranged on a page, the time required to create a device link profile for each object out of the entire processing time of the color conversion processing. As a result, depending on the number of objects, the color conversion process may take a long time.
[0011]
In view of the above circumstances, the present invention provides a color conversion apparatus and computer that can perform color conversion processing in a short time even when color conversion processing is performed on page data on which a large number of objects are arranged. It is an object of the present invention to provide a color conversion program that operates as a conversion device.
[0012]
[Means for Solving the Problems]
The color conversion device of the present invention that achieves the above object provides:
A data acquisition unit that acquires first page data in which one or more objects are arranged in which the color of each object is expressed by coordinates in a color space corresponding to the object;
A color conversion definition creating unit for creating a color conversion definition representing the correspondence between the color space coordinates of the object and the coordinates of a predetermined color space;
One color coordinate conversion is performed on the color coordinates of the objects in the first page data acquired by the data acquisition unit based on the color conversion definition created by the color conversion definition creation unit for each object. A color conversion processing unit for creating second page data representing the page on which the above objects are arranged and expressing the color of each object in the coordinates of the predetermined color space;
A color conversion definition storage unit for storing the color conversion definition used in the color conversion processing unit, and
When color coordinate conversion is executed by the color conversion processing unit, the color conversion definition used for color coordinate conversion equivalent to the color coordinate conversion is stored in the color conversion definition stored by the color conversion definition storage unit. And a color conversion definition search unit that applies the found color conversion definition to the color coordinate conversion in the color conversion processing unit.
[0013]
Here, an “object” refers to each of the components that constitute a page, such as an image, text, or path.
[0014]
According to the color conversion definition correcting apparatus of the present invention, the color conversion definition used for the color conversion process for color coordinate conversion is stored, and the color conversion process based on the color conversion definition equivalent to the stored color conversion definition is performed. Before execution, search for an equivalent color conversion definition from the saved color conversion definitions without creating a new color conversion definition, and apply the found equivalent color conversion definition to the color conversion process again. Therefore, color conversion processing can be performed in a short time on page data on which a large number of objects are arranged.
[0015]
Note that the color conversion definition storage in the color conversion definition storage unit may temporarily store the color conversion definition so that it is deleted after the color conversion processing is performed on one page data. Alternatively, the color conversion definition may be stored for a long period of time so as to continue to be stored even after the color conversion processing is performed on one page data.
[0016]
Further, the color conversion device of the present invention includes a color conversion parameter setting unit that sets a color conversion parameter for adjusting the color coordinate conversion according to an operation,
The color conversion definition creating unit creates the color conversion definition in consideration of the color conversion parameters set by the color conversion parameter setting unit,
When the color conversion definition storage unit stores the color conversion definition, characteristic data representing the color space of the object corresponding to the color conversion definition and the color conversion parameters taken into consideration when creating the color conversion definition are displayed. It is saved in association with the color conversion definition,
Characteristic data stored by the color conversion definition storage unit when the color conversion definition search unit searches for a color conversion definition used for color coordinate conversion equivalent to the color coordinate conversion executed by the color conversion processing unit. Is preferably used as a search key.
[0017]
According to the color conversion apparatus including such a color conversion parameter setting unit, the color conversion definition is searched using the characteristic data representing the object color space and the color conversion parameter as a search key. Color conversion definition can be searched accurately.
[0018]
Furthermore, in the color conversion device of the present invention, the color conversion definition creation unit creates the color conversion definition in the form of an ICC profile,
When the color conversion definition search unit searches for a color conversion definition used for color coordinate conversion equivalent to the color coordinate conversion executed by the color conversion processing unit, it searches using the header part of the ICC profile as a search key. It is also a preferable form.
[0019]
Thus, according to a color conversion device that searches using the header portion of the ICC profile as a search key, the data amount of the header portion is smaller than the data amount of the entire color conversion definition. The search time for searching is shortened, and color conversion processing can be performed on the page in a shorter time.
[0020]
Further, the color conversion program of the present invention that achieves the above object is
A color conversion program that is incorporated in a computer and causes the computer to operate as a color conversion device that performs coordinate conversion of coordinates representing the color of each object on a page on which one or more objects are arranged.
A data acquisition unit that acquires first page data in which one or more objects are arranged in which the color of each object is expressed by coordinates in a color space corresponding to the object;
A color conversion definition creating unit for creating a color conversion definition representing the correspondence between the color space coordinates of the object and the coordinates of a predetermined color space;
One color coordinate conversion is performed on the color coordinates of the objects in the first page data acquired by the data acquisition unit based on the color conversion definition created by the color conversion definition creation unit for each object. A color conversion processing unit for generating second page data representing the page on which the above objects are arranged and expressing the color of each object in the coordinates of the predetermined color space;
A color conversion definition storage unit for storing the color conversion definition used in the color conversion processing unit, and
When color coordinate conversion is executed by the color conversion processing unit, the color conversion definition used for color coordinate conversion equivalent to the color coordinate conversion is stored in the color conversion definition stored by the color conversion definition storage unit. And a color conversion definition search unit that applies the found color conversion definition to the color coordinate conversion in the color conversion processing unit.
[0021]
The color conversion program of the present invention is configured such that when the color conversion program is installed and operated on a computer, the computer operates as the color conversion apparatus of the present invention. Includes all aspects corresponding to various aspects of the color conversion apparatus of the present invention.
[0022]
In the color conversion device and the color conversion program, the same name is given to each component, but these component means hardware and software in the color conversion device, and only software in the color conversion program. .
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described.
[0024]
FIG. 1 is a diagram showing a part of hardware of a computer system including an embodiment of a color conversion apparatus of the present invention.
[0025]
Here, one DTP (Desktop Publishing) server 100 operating as an embodiment of the present invention, three client machines 200, 210, 220, two RIP (Raster Image Processor) 300, 310, A client and server type computer system including one scanner 400 and three image output printers 600, 610, and 620 is shown.
[0026]
In the hardware of the computer system shown in FIG. 1, the DTP server 100, client machines 200, 210, 220, RIP 300, 310, and scanner 400 are connected to each other via a communication line 500 and are connected to a LAN (Local Area Network). ). The printers 600 and 610 are connected to the RIP 300, and the printer 620 is connected to the RIP 310.
[0027]
The scanner 400 reads an image formed on a sheet.
[0028]
Each of the client machines 200, 210, and 220 is composed of a relatively small workstation or personal computer, and is described in a kind of page description language by DTP software installed in each of the client machines 200, 210, and 220. Page data is created. Alternatively, image data representing an image read by the scanner 400 is received via the communication line 500, and for example, page data described in a page description language is created based on the image data.
[0029]
The DTP server 100 is composed of a relatively large workstation or the like, receives the page data described in the page description language obtained by the client machines 200, 210, and 220 via the communication line 500. Based on the page data, a color conversion process described later is executed.
[0030]
The RIPs 300 and 310 are each composed of a relatively small workstation or personal computer, and the page data described in the page description language after the color conversion processing is performed by the DTP server 100 is transmitted to the communication line 500. And rasterizing the page data to create output image data.
[0031]
Each printer 600, 610, 620 prints out based on the output image data obtained by each RIP 300, 310.
[0032]
Here, the DTP server 100, client machines 200, 210, 220, RIP 300, 310, and scanner 400 are main body devices 101, 201, 211, 221, 301, 311, 401, and these main body devices 101, 201 in terms of external configuration. , 211, 221, 301, 311, 401 in accordance with instructions from the image display devices 102, 202, 212, 222 for displaying images and character strings on the display screens 102 a, 202 a, 212 a, 222 a, 302 a, 312 a, 402 a. , 302, 312, 402, keyboards 103, 203, 213, 223, 303, 313, 403 for inputting various types of information according to key operations to the main units 101, 201, 211, 221, 301, 311, 401. And display screen 102a, 202a, 212a, 22 By designating an arbitrary position on a, 302a, 312a, 402a, the mouse 104, 204, 214, 224, 304, which inputs an instruction corresponding to, for example, an icon displayed at that position at the time of designation. 314, 404 are provided. In addition, these main body devices 101, 201, 211, 221, 301, 311, and 401 are externally provided with FD loading ports 101a, 201a, 211a, 221a, 301a, 311a, and 401a for loading flexible disks (FD). And CD-ROM loading ports 101b, 201b, 211b, 221b, 301b, 311b, 401b for loading a CD-ROM. The scanner 400 includes a scanner main body device 405 that reads an image formed on a sheet.
[0033]
The client machines 200, 210, 220, the RIPs 300, 310, and the scanner 400 are not the subject of the present invention, and the DTP server 100 that operates as an embodiment of the color conversion apparatus of the present invention will be further described below.
[0034]
FIG. 2 is a hardware configuration diagram of the DTP server having the appearance shown in FIG.
[0035]
In the main unit 101 of the DTP server 100 shown in FIG. 1, as shown in FIG. 2, the CPU 111 that executes various programs and the program stored in the hard disk device 113 are read and expanded for execution by the CPU 111. Main memory 112, hard disk device 113 storing various programs and data, FD 700 loaded with FD 700 and accessing FD 700 loaded, CD-ROM 800 loaded, CD-ROM 800 loaded Connected to a CD-ROM drive 115 to be accessed, for example, a digital camera (not shown), receives image data from the digital camera, or is connected to an output device such as an inkjet printer for image output (not shown), and the output device Output image data A communication interface 117 connected to an I / O interface 116 and a communication line 500 (see FIG. 1) and controlling communication with other machines is shown. These various elements and the image shown in FIG. The display device 102, the keyboard 103, and the mouse 104 are connected to each other via the bus 110.
[0036]
Here, in the CD-ROM 800, the DTP server 100 is used as a color conversion apparatus that performs color conversion processing by performing coordinate conversion of coordinates representing the color of each object on a page on which one or more objects are arranged. A color conversion program for operation is stored. The CD-ROM 800 is loaded in the CD-ROM drive 115, and the color conversion program stored in the CD-ROM 800 is uploaded to the DTP server 100 and is stored in the hard disk device 113. Is remembered.
[0037]
FIG. 3 is a diagram showing an embodiment of the color conversion program of the present invention.
[0038]
The color conversion program 810 shown in FIG. 3 is stored in the CD-ROM 800 shown in FIG.
[0039]
The color conversion program 810 includes a data acquisition unit 811, a color conversion parameter setting unit 812, a color conversion definition creation unit 813, a color conversion processing unit 814, a color conversion definition storage unit 815, and a color conversion definition search unit 816. It consists of and.
[0040]
The operation of each element of the color conversion program 810 will be described later.
[0041]
FIG. 4 is a functional block diagram showing an embodiment of the color conversion apparatus of the present invention.
[0042]
In the color conversion apparatus 10 shown in FIG. 4, the color conversion program 810 shown in FIG. 3 is loaded on the DTP server 100 shown in FIGS. 1 and 2, and the color conversion program 810 is executed in the DTP server 100. Is realized.
[0043]
The color conversion device 10 shown in FIG. 4 includes a data acquisition unit 11, a color conversion parameter setting unit 12, a color conversion definition creation unit 13, a color conversion processing unit 14, a color conversion definition storage unit 15, a color conversion unit A conversion definition search unit 16 is provided. The elements of the data acquisition unit 11, the color conversion parameter setting unit 12, the color conversion definition creation unit 13, the color conversion processing unit 14, the color conversion definition storage unit 15, and the color conversion definition search unit 16 are shown in FIG. A data acquisition unit 811, a color conversion parameter setting unit 812, a color conversion definition creation unit 813, a color conversion processing unit 814, a color conversion definition storage unit 815, and a color conversion definition search unit as software components constituting the color conversion program 810 shown 816 and the combination of the hardware of the DTP server 100 shown in FIGS. 1 and 2, the OS (Operation System), and application programs necessary for realizing each function of the software components. Yes.
[0044]
Hereinafter, by describing each element of the color conversion apparatus 10 shown in FIG. 4, each element of the color conversion program 810 shown in FIG. 3 will also be described.
[0045]
The data acquisition unit 11 of the color conversion apparatus 10 illustrated in FIG. 4 is an element corresponding to the data acquisition unit 811 of the color conversion program 810 illustrated in FIG. 3 on application software, and includes one such as an image, text, or path. The color of each object representing the page on which the above objects are arranged is an input color space (an example of the object color space according to the present invention) corresponding to each object, such as an RGB color space or a CMYK color space. The first page data expressed by coordinates is acquired. This data acquisition unit 11 shows an example of the function of the data acquisition unit referred to in the present invention. The function of the data acquisition unit 11 is the I / O interface 116 of the DTP server 100 shown in FIGS. It is carried by a combination of the communication interface 117 and the CPU 111 or the like that executes the data acquisition unit 811 (see FIG. 3) as a program component.
[0046]
Further, the color conversion parameter setting unit 12 is an element corresponding to the color conversion parameter setting unit 812 of the color conversion program 810 shown in FIG. 3 on the application software, and operates color conversion parameters for adjusting color conversion processing described later. It is set according to. The color conversion parameter setting unit 12 shows an example of the function of the color conversion parameter setting unit referred to in the present invention, and this function is the hardware of the keyboard 13 of the DTP server 100 shown in FIGS. It is carried by a combination of a mouse 14 and a CPU 111 or the like that executes a color conversion parameter setting unit 812 (see FIG. 3) as a program component.
[0047]
Further, the color conversion definition creating unit 13 is an element corresponding to the color conversion definition creating unit 813 of the color conversion program 810 shown in FIG. 3 on the application software, and the coordinates of the input color space described above, for example, predetermined printing A color conversion definition (hereinafter, this color conversion definition is referred to as a device link profile) representing the correspondence with coordinates of an output color space (an example of a predetermined color space referred to in the present invention) such as a CMYK color space of a machine. It is created taking into account the color conversion parameters set by the conversion parameter setting unit 12. The color conversion definition creating unit 13 can create the device link profile in the ICC profile format. The color conversion definition creating unit 13 shows an example of the function of the color conversion definition creating unit referred to in the present invention, and the function is a color conversion definition creating unit 813 (FIG. 3) as a program component in hardware. The CPU 111 and the like built in the DTP server 100 shown in FIGS.
[0048]
The color conversion processing unit 14 is an element corresponding to the color conversion processing unit 814 of the color conversion program 810 shown in FIG. 3 on the application software, and the object in the first page data acquired by the data acquisition unit 11 By executing color conversion processing for each object on the basis of the device link profile created by the color conversion definition creation unit 13 for each object, a page on which one or more objects are arranged is displayed. The second page data expressing the color of each object expressed by the coordinates of a predetermined output color space is created. The color conversion processing unit 14 shows an example of the function of the color conversion processing unit referred to in the present invention, and the function is the same as that of the color conversion processing unit 814 (see FIG. 3) as a program component on the hardware. It is carried out by the CPU 111 or the like built in the DTP server 100 shown in FIGS.
[0049]
The color conversion definition storage unit 15 is an element corresponding to the color conversion definition storage unit 815 of the color conversion program 810 shown in FIG. 3 on the application software, and was used for the color conversion processing in the color conversion processing unit 14. The device link profile stores characteristic data representing the input color space corresponding to the device link profile and the color conversion parameter added when the device link profile is created in association with the device link profile. . The color conversion definition storage unit 15 shows an example of the function of the color conversion definition storage unit referred to in the present invention, and the function is built in the DTP server 100 shown in FIGS. The main memory 112 or the hard disk device 113 is combined with the CPU 111 that executes the color conversion definition storage unit 815 (see FIG. 3) as a program component.
[0050]
Further, the color conversion definition search unit 16 is an element corresponding to the color conversion definition search unit 816 of the color conversion program 810 shown in FIG. 3 on the application software, and the color conversion processing unit 14 executes the color conversion processing. At this time, the device link profile used for the color conversion process equivalent to the color conversion process is searched from the device link profiles stored by the color conversion definition storage unit 15, and the found device link profile is converted to the color conversion process. This is applied to the color conversion processing in the processing unit 14. The color conversion definition search unit 16 stores the characteristics stored by the color conversion definition storage unit 15 when searching for a device link profile used for color conversion processing equivalent to the color conversion processing executed by the color conversion processing unit 14. It is possible to search using data as a search key, or search using the header part of the ICC profile as a search key. The color conversion definition search unit 16 shows an example of the function of the color conversion definition search unit referred to in the present invention, and this function is a color conversion definition search unit 816 as a program component on the hardware (FIG. 3). The CPU 111 and the like built in the DTP server 100 shown in FIGS.
[0051]
FIG. 5 is a schematic diagram showing a color conversion procedure in an embodiment of the color conversion apparatus of the present invention.
[0052]
First, the data acquisition unit 11 (see FIG. 4) that receives an instruction from the operator represents the color of each object representing a page on which an object such as an image, text, or path is arranged, for example, RGB color space or CMYK color. First page data 910 expressed by coordinates of the input color space 911 corresponding to each object such as a space is acquired, and this input color space 911 is extracted for each object.
[0053]
Next, in accordance with an instruction from the operator, the color conversion parameter setting unit 12 (see FIG. 4) sets a color conversion parameter 912 for adjusting the color conversion processing according to the operation. A predetermined output color space 913 is also set by an instruction from the operator.
[0054]
Here, as described in “Problems to be Solved by the Invention”, when color conversion processing from one color space to another color space is performed on the entire page, the color conversion processing is performed on the page. It is applied independently for each object such as a placed image, text, or path. Below, the procedure of the color conversion process performed with respect to each object arrange | positioned on the page acquired by the data acquisition part 11 is demonstrated.
[0055]
First, each object on the page is extracted for each object by the device link profile cache processing unit 92 having the functions of the color conversion definition creating unit 13 (see FIG. 4) and the color conversion definition searching unit 16 (see FIG. 4). The device link profile 920 having the same three elements of the input color space 911, the output color space 913 and the color conversion parameter 912 set by an instruction from the operator, is stored by the color conversion definition storage unit 15. It is searched whether or not it exists in 921.
[0056]
As a result of the search, when a device link profile 920 having the same input color space, output color space, and color conversion parameter is found, the color conversion processing unit 14 (see FIG. 4) is based on the found device link data 920. Color conversion processing is performed by a color conversion processing unit 91 having a function, and second page data 930 representing the color of each object expressed by the coordinates of the output color space 913 is created, representing the page on which the object is arranged. .
[0057]
For example, each number placed on the calendar is an object, and all of them have the same input color space, output color space, and color conversion parameters, so the saved device link profile can be reused repeatedly Will be.
[0058]
If a device link profile 920 having the same input color space, output color space, and color conversion parameter is not found as a result of the search, device link data 920 is newly created, and based on the created device link data 920. Then, the color conversion process is performed to generate second page data 930, and the generated device link data 920 is stored by the color conversion definition storage unit 15.
[0059]
As described above, the device link data 920 stored in this way is subjected to color conversion processing on other objects, and as described above, the device link data 920, the input color space, the output color space, and the color conversion parameters. Is reused repeatedly when device link data with a common is used
According to the above-described embodiment, the color conversion definition used for the color conversion process is stored, and when the color conversion process based on the color conversion definition equivalent to the stored color conversion definition is executed, a new one is newly added. A number of objects are created because the equivalent color conversion definition is searched from the saved color conversion definitions without recreating the color conversion definition, and the found equivalent color conversion definition is applied again to the color conversion process. The color conversion process can be performed in a short time on the page data in which is arranged.
[0060]
In the description of the present embodiment, an example is shown in which coordinates representing the color of each object on a print page are coordinate-converted. However, for example, one or more web pages such as HTML pages described in HTML or the like are used. The coordinates representing the color of each object on the page where the object is arranged may be subjected to coordinate conversion.
[0061]
【The invention's effect】
As described above, according to the present invention, a color conversion device and a computer capable of performing color conversion processing in a short time even when color conversion processing is performed on page data on which a large number of objects are arranged. A color conversion program that operates as such a color conversion apparatus is provided.
[Brief description of the drawings]
FIG. 1 is a diagram showing a part of hardware of a computer system including an embodiment of a color conversion apparatus of the present invention.
FIG. 2 is a hardware configuration diagram of a DTP server having the appearance shown in FIG.
FIG. 3 is a diagram showing an embodiment of a color conversion program of the present invention.
FIG. 4 is a functional block diagram showing an embodiment of a color conversion apparatus of the present invention.
FIG. 5 is a schematic diagram showing a color conversion procedure in an embodiment of the color conversion apparatus of the present invention.
[Explanation of symbols]
10 color converter
11,811 Data acquisition unit
12,812 Color conversion parameter setting section
13,813 Color conversion definition creation part
14,814 color conversion processing unit
15,815 Color conversion definition storage
16,816 Color conversion definition search section
100 DTP server
101, 201, 211, 221, 301, 311, 401
101a, 201a, 211a, 221a, 301a, 311a, 401a FD loading port
101b, 201b, 211b, 221b, 301b, 311b, 401b CD-ROM loading slot
102, 202, 212, 222, 302, 312, 402 Image display device
102a, 202a, 212a, 222a, 302a, 312a, 402a Display screen
103, 203, 213, 223, 303, 313, 403 Keyboard 104, 204, 214, 224, 304, 314, 404 Mouse
110 bus
111 CPU
112 Main memory
113 Hard disk device
114 FD drive
115 CD-ROM drive
116 I / O interface
117 Communication interface
200, 210, 220 Client machine
300,310 RIP
400 scanner
405 Scanner main unit
500 communication line
600, 610, 620 Printer
700 FD
800 CD-ROM
810 color conversion program
91 color conversion processor
92 Device Link Profile Cache Processing Unit
910 First page data
911 Input color space
912 Color conversion parameters
913 Output color space
920,921 Device link profile
930 Second page data

Claims (4)

A data acquisition unit that acquires first page data in which one or more objects are arranged in which the color of each object is expressed by coordinates in a color space corresponding to the object;
Knowing the first profile representing the correspondence between the coordinates of the color space of the object and the color of the object, and the second profile representing the correspondence between the coordinates of the predetermined color space and the coordinates of the color, consisting coupling with the second profile, the color conversion definition creating unit that creates a color conversion definition representing the correspondence between the coordinates of color space coordinates and said predetermined color space of the object,
A color coordinate conversion of the color of the object in the first page data is performed on the basis of the color conversion definition for each object, whereby a second color in which the color of each object is expressed by the coordinates of the predetermined color space. A color conversion processor that creates page data,
A color conversion definition storage unit that stores the color conversion definition used in the color conversion processing unit in association with a search key that represents the content of the color coordinate conversion and has an information amount smaller than the information amount of the color conversion definition The color conversion definition used for the color coordinate conversion equivalent to the color coordinate conversion when the color conversion processing is executed in the color conversion processing unit, the color conversion definition stored by the color conversion definition storage unit A color conversion apparatus comprising: a color conversion definition search unit that performs a search using the search key and applies the found color conversion definition to the color coordinate conversion in the color conversion processing unit. A color conversion parameter setting unit for setting a color conversion parameter for adjusting the color coordinate conversion according to an operation;
The color conversion definition creating unit creates the color conversion definition in consideration of the color conversion parameters set by the color conversion parameter setting unit;
When the color conversion definition storage unit stores the color conversion definition, characteristic data representing a color space of an object corresponding to the color conversion definition and a color conversion parameter taken into account when the color conversion definition is created Is stored in association with the color conversion definition,
Characteristic data stored by the color conversion definition storage unit when the color conversion definition search unit searches for a color conversion definition used for color coordinate conversion equivalent to the color coordinate conversion executed by the color conversion processing unit. the color conversion apparatus of claim 1, wherein the a is to search by using as the search key. The color conversion definition creating unit creates the color conversion definition in an ICC profile format;
The color conversion definition retrieval section, when searches for color conversion definitions used for equivalent color coordinate conversion and the color coordinate conversion performed by the color conversion processing unit, with the header portion of the ICC profile as the retrieval key The color conversion apparatus according to claim 1, wherein the color conversion apparatus searches. A color conversion program that is incorporated in a computer and causes the computer to operate as a color conversion device that performs coordinate conversion of coordinates representing the color of each object on a page on which one or more objects are arranged,
A data acquisition unit that acquires first page data in which one or more objects are arranged in which the color of each object is expressed by coordinates in a color space corresponding to the object;
Knowing the first profile representing the correspondence between the coordinates of the color space of the object and the color of the object, and the second profile representing the correspondence between the coordinates of the predetermined color space and the coordinates of the color, consisting coupling with the second profile, the color conversion definition creating unit that creates a color conversion definition representing the correspondence between the coordinates of color space coordinates and said predetermined color space of the object,
A color coordinate conversion of the color of the object in the first page data is performed on the basis of the color conversion definition for each object, whereby a second color in which the color of each object is expressed by the coordinates of the predetermined color space. A color conversion processor that creates page data,
A color conversion definition storage unit that stores the color conversion definition used in the color conversion processing unit in association with a search key that represents the content of the color coordinate conversion and has an information amount smaller than the information amount of the color conversion definition The color conversion definition used for the color coordinate conversion equivalent to the color coordinate conversion when the color conversion processing is executed in the color conversion processing unit, the color conversion definition stored by the color conversion definition storage unit A color conversion program, comprising: a color conversion definition search unit that searches for a color conversion definition using the search key and applies the found color conversion definition to the color coordinate conversion in the color conversion processing unit.

Images