JP2008033114A - Image display device and image display program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display device and an image display program which can acquire a key to obtain an optimal color component group for color reproduction of each image. <P>SOLUTION: The image display device comprises: an image reproducing part 410 which reproduces colors of an original image with a color element group in only process colors to obtain an process reproduction image, and also reproduces the colors of the original image with a color element group where special features are added to the process colors; a gamut comparison part 420 which searches an image portion having reproduced colors other than the gamut of a color element group of only the process colors in the special characteristic reproduction image; an image comparison part 430 which searches an image portion different from the process reproduction image in the special characteristic reproduction image; a comparison result display part 440 which displays the process reproduction image and the special characteristic reproduction image side by side, and also displays the image portion searched by the gamut comparison part 420 and the image comparison part 430 separately from the other image portion, as regards the special characteristic reproduction image. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image display device that displays a reproduced image that reproduces an original image, and an image display program that causes a computer to operate as such an image display device.

  Conventionally, in a printing press, inks of four color elements (process colors) of cyan (C), magenta (M), yellow (Y), and black (K) are generally used. Color is output on paper. In addition, in order to appropriately output colors that cannot be output only with such process colors, for example, colors of other colors (special colors) such as red (R), green (G), and blue (B). Elemental inks may be used.

  In printing using such a printing machine or the like, whether or not to perform color reproduction using special colors, and what special color should be used when using special colors are determined by the image editor or the printing It is left to the judgment of the user, such as a vendor. Certainly, the more types of spot colors that are used, the more types of colors that can be properly reproduced by the printing press. On the other hand, however, the printing effort and cost are increased by the amount of the spot colors used. Therefore, it is required to appropriately reproduce the color of an image with a printing machine while suppressing the use of special colors as much as possible. However, the color reproducibility, labor, cost, etc. are comprehensively considered from various color element groups such as a color element group of only process colors or a color element group obtained by adding some special color to the process color. Thus, skill is required to select a color element group most suitable for an image to be printed.

Therefore, an expert obtains an optimal color element group for images of various contents in advance and registers the optimal color element group for the content in the database together with each content, and the user is registered in the database at the time of printing. A technique has been proposed in which an optimum color element group is obtained by selecting a content that appears to match an image to be printed from among existing content (see, for example, Patent Document 1). For example, in an image of a content such as an advertisement for fresh food such as meat and vegetables, an image portion of R color or G color occupies a large proportion. The color element group using the color or the special color of G color is automatically obtained regardless of the judgment of the user.
JP 2002-247403 A

  However, in the technique disclosed in Patent Document 1, the color element group is selected based on the content selected by the user from the content registered in advance in the database instead of the individual images. There is a problem that the color element group is not always optimal for color reproduction of individual images. After all, in order to surely find the optimal color element group for color reproduction of individual images, it is still necessary to have a skilled technique that comprehensively considers color reproducibility, labor, cost, etc. is there. Therefore, there is a demand for a technique capable of obtaining some clues in order to make the operation for reliably obtaining such an optimal color element group as easy as possible.

  In view of the above circumstances, the present invention provides an image display device capable of obtaining a clue for obtaining an optimum color element group for color reproduction of individual images, and an image display program for causing a computer to operate as such an image display device. The purpose is to provide.

The image display device of the present invention that achieves the above object reproduces the color of the original image with a color element group that includes a plurality of reference color elements and color elements different from the reference color elements, and obtains a reproduced image. And
A display unit configured to display a reproduction image obtained by the image reproduction unit in a form in which a difference between color reproducibility in the reproduction image and color reproducibility by only the plurality of reference color elements can be confirmed; It is characterized by that.

  Here, in the image display device of the present invention, the form “the plurality of reference color elements are color elements of CMYK four colors” is a typical form.

  Note that “display” in the present invention includes not only displaying on a monitor or the like, but also including printing on paper with a printer or the like.

  The cost and labor required for printing, for example, increase as color elements different from the reference color elements that are typically CMYK 4 colors of process colors are added to the color element group. According to the image display device of the present invention, the difference between the color reproducibility by the color element group in the reproduced image and the color reproducibility by only the plurality of reference color elements is confirmed through the display form by the display unit. By doing this, it is possible to grasp how much the color elements that lead to an increase in cost and labor as described above contribute to the color reproducibility. As a result, when a user obtains an optimal color element group by comprehensively considering the color reproducibility, labor, cost, etc. for the color reproduction of each original image, the cost of a certain color element group is determined. It is possible to obtain useful clues as to whether or not color reproduction can be performed in accordance with the time and effort.

  In the image display device of the present invention, “the display unit displays the reproduction image and the reference reproduction image obtained by reproducing the color of the original image only with the plurality of reference color elements side by side. The form “is” is a preferred form.

  According to this preferable image display device, by comparing the reproduced color in the reproduced image and the reproduced color in the reference reproduced image on the same screen, only the color reproducibility in the reproduced image and the plurality of reference color elements are compared. The difference from the color reproducibility due to can be easily confirmed.

Further, in the image display device of the present invention, “the display unit includes an image portion in which the reproduction color in the reproduction image is different from the reproduction color based only on the plurality of reference color elements, and another image in the reproduction image. The reproduction image is displayed in a form that distinguishes it from the image part. "
“The display unit displays either one of an image part in which the reproduced color in the reproduced image is different from the reproduced color based on only the plurality of reference color elements and another image part in the reproduced image. The form of “painting with the display color and displaying the reproduced image” is also a preferable form.

  According to the image display device of these preferred embodiments, an image in which the reproduction color is different from the reproduction color based only on the plurality of reference color elements because color elements different from the reference color elements are involved in color reproduction. Since the portion is explicitly displayed, it is possible to easily grasp a location where the color reproducibility in the reproduced image is different from the color reproducibility using only the plurality of reference color elements.

Further, in the image display device of the present invention, “the display unit includes an image portion having a reproduction color outside the color range that can be expressed only by the plurality of reference color elements, and an image portion having a reproduction color within the color range; The above-mentioned reproduced image is displayed in a form that distinguishes "
“The display unit displays either one of an image part having a reproduced color outside a color range that can be expressed only by the plurality of reference color elements and an image part having a reproduced color within the color range as a predetermined image part. A form in which the reproduced image is displayed in a form filled with a display color is also preferable.

  According to the image display devices of these preferred forms, since the image portion in which the color cannot be reproduced with only the plurality of reference color elements is explicitly displayed in the reproduced image, color reproduction in the reproduced image is performed. Therefore, it is possible to easily grasp the difference between the color reproducibility and the color reproducibility using only the plurality of reference color elements.

The image display program of the present invention that achieves the above object is incorporated in a computer, and on the computer,
An image reproduction unit that reproduces the color of the original image with a color element group including a plurality of reference color elements and color elements different from the reference color elements,
A display unit configured to display a reproduction image obtained by the image reproduction unit in a form in which a difference between the reproduction color in the reproduction image and the reproduction color based on only the plurality of reference color elements can be confirmed; To do.

  According to the image display program of the present invention, the components of the image display apparatus of the present invention described above are easily constructed by a computer.

  It should be noted that the image display program of the present invention is only shown here in its basic form, but this is merely to avoid duplication, and the image display program of the present invention is not limited to the above basic form. Various forms corresponding to each form of the image display device described above are included.

  In addition, an element such as an image reproduction unit constructed on the computer by the image display program of the present invention may be one element constructed by one program part, and one element may be constituted by a plurality of program parts. It may be constructed, or a plurality of elements may be constructed by one program part. In addition, these elements may be constructed so as to execute such an action by themselves, or constructed by giving instructions to other programs and program components incorporated in the computer. May be.

  As described above, according to the present invention, an image display device capable of obtaining a clue for obtaining an optimum color element group for color reproduction of each image, and a computer operating as such an image display device The image display program to be obtained can be obtained.

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

  FIG. 1 is an overall configuration diagram of a printing system to which an embodiment of the present invention is applied.

  The printing system 1 shown in FIG. 1 includes a printing machine 30 that can use three color inks of RGB in addition to CMYK four process color inks, and an image for printing edited based on the original image 11. Is printed on a sheet by a printing machine 30 to create a printed matter 31.

  The color scanner 10 reads the document image 11 and generates RGB three-color color separation image data representing the read document image 11. This color separation image data is input to the personal computer 100. In the personal computer 100, the user performs electronic plate collection based on the input color separation image data, and image data (hereinafter referred to as RGB image data) representing an image for printing in which colors are expressed in three RGB colors. ) Is generated.

  Here, the printing system 1 shown in FIG. 1 includes a color element group including only CMYK four process colors and seven color element groups obtained by adding seven special colors of RGB to the process colors as will be described later. The printed matter 31 can be created with a total of eight color element group inks.

  In the personal computer 100, when RGB image data is generated as described above, a reproduction image (process reproduction) obtained by reproducing the color of an image (original image) represented by the RGB image data with a group of color elements of only process colors. Image) and a reproduction image (special color reproduction image) obtained by reproducing a color with a group of color elements including a special color are displayed side by side. This display will be described later together with the color element group.

  Then, the user determines the color element group to be used for printing by looking at the display content.

  Then, RGB image data representing the original image is converted into image data that reproduces the original image by defining a color with the adopted color element group. Then, the converted image data is converted into halftone dot image data representing a halftone dot image formed by halftone dots by a so-called RIP (Raster Image Processor). The conversion into halftone dot image data is performed for each of a plurality of color elements constituting the color element group, and halftone dot image data corresponding to each color element is created.

  The halftone dot image data for printing is input to the film printer 20, and the film printer 20 creates a printing original plate for each plate corresponding to the input halftone dot image data. From this printing film original plate, printing plates of each plate are prepared, and these printing plates are mounted on the printing machine 30. Then, ink of a color corresponding to the plate is applied to the plate of each plate, and the applied ink is transferred onto a printing sheet. The transition is performed for each plate to form the printed matter 31.

  2 is an external perspective view of the personal computer 100 of FIG. 1, and FIG. 3 is a hardware configuration diagram thereof.

  The personal computer 100 has an appearance configuration, a main body device 110, an image display device 120 that displays an image on a monitor 120a according to an instruction from the main body device 110, and various information according to key operations on the main body device 110. And a mouse 140 for inputting an instruction corresponding to, for example, an icon or the like displayed at that position by designating an arbitrary position on the monitor 120a. The main unit 110 has an FD loading port 110a for loading a flexible disk (hereinafter abbreviated as FD) and a CD-ROM loading port 110b for loading a CD-ROM.

  As shown in FIG. 3, the main unit 110 includes a CPU 111 that executes various programs, a main memory 112 that reads programs stored in the hard disk device 113 and develops them for execution by the CPU 111, and various programs 1 and the hard disk device 113 in which data and the like are stored, the FD drive 114 for accessing the FD 200, the CD-ROM 210 are loaded, the CD-ROM drive 115 for accessing the loaded CD-ROM 210, the color scanner 10 and the film of FIG. An I / O interface 116 that is connected to the printer 20 and exchanges data with these devices is built-in. These various elements, and the image display device 120, keyboard 130, and mouse 140 shown in FIG. Connected to each other via 150 To have.

  As described above, the personal computer 100 described above generates RGB image data, displays a reproduced image, and creates halftone dot image data. Among these processes, the generation of RGB image data and the creation of halftone dot image data are not the subject of the present invention, so detailed description thereof will be omitted, and a reproduction executed by the personal computer 100 will be described below. The explanation will focus on image display.

  In the present embodiment, an embodiment of the image display program of the present invention that causes the CD-ROM 210 shown in FIG. 2 to operate the personal computer 100 as an embodiment of the image display apparatus of the present invention for displaying a reproduced image. Is memorized. When the CD-ROM 210 is loaded into the CD-ROM drive 115, the program stored in the CD-ROM 210 is uploaded to the personal computer 100 and written to the hard disk device 113. Thereby, the personal computer 100 operates as an image display device.

  Hereinafter, an embodiment of the image display program of the present invention will be described.

  FIG. 4 is a schematic diagram showing an embodiment of the image display program of the present invention.

  FIG. 4 schematically shows a CD-ROM 210 in which an image display program 300 that is an embodiment of the image display program of the present invention is stored.

  The image display program 300 causes the computer 100 to operate as an embodiment of the image display device of the present invention, and includes an image reproduction unit 310, a gamut comparison unit 320, an image comparison unit 330, and a comparison result display unit 340. And have. Details of each element of the image display program 300 will be described later.

  FIG. 5 is a block diagram showing an embodiment of the image display device of the present invention.

  An image display device 400 that is an embodiment of the image display device of the present invention shown in FIG. 5 is configured by installing and executing the image display program 300 of FIG. 4 on the computer 100 of FIG. An image reproduction unit 410, a gamut comparison unit 420, an image comparison unit 430, and a comparison result display unit 440.

  When the image display program 300 of FIG. 4 is installed in the computer 100 of FIG. 1, the image reproduction unit 310, the gamut comparison unit 320, the image comparison unit 330, and the comparison result display unit 340 of the image display program 300 are respectively The image reproduction unit 410, the gamut comparison unit 420, the image comparison unit 430, and the comparison result display unit 440 of the image display device 400 shown in FIG. Here, each element of the image display apparatus 400 is configured by a combination of computer hardware and an OS or application program executed on the computer, whereas each element of the image display program 300 of FIG. Is composed only of application programs.

  The image reproduction unit 410 in the image display device 400 corresponds to an example of the image reproduction unit in the image display device of the present invention. A combination of the gamut comparison unit 420, the image comparison unit 430, and the comparison result display unit 440 in the image display device 400 corresponds to an example of the display unit in the image display device of the present invention.

  Hereinafter, by describing each element of the image display device 400 shown in FIG. 5, each element of the image display program 300 shown in FIG. 4 will also be described.

  The image display apparatus 400 is a color element group of only CMYK four process colors as the color of an image for printing (original image) represented by RGB image data D1 created based on the original image 11 in the printing system 1 of FIG. The process reproduction image obtained by reproducing the image and the special color reproduction image obtained by reproducing the color with the color element group obtained by adding the special color to the process color are displayed side by side. Then, the image display device 400 performs such display on seven types of special color reproduction images corresponding to the seven types of color element groups described below, so that the user can obtain the color elements optimum for color reproduction of the original image. It is possible to obtain clues to be described later for selecting a group from these seven types of color element groups in consideration of color reproducibility, labor, cost, and the like.

  The seven types of color element groups, which are a population for the user to select the color element group optimal for color reproduction of the original image, are composed of color element groups composed of CMYK 4 colors and R colors, and CMYK 4 colors and G colors. Color element group, color element group consisting of CMYK4 color and B color, color element group consisting of CMYK4 color and RG2 color, color element group consisting of CMYK4 color and GB2 color, color element consisting of CMYK4 color and BR2 color There are seven types of color element groups, that is, a group of color elements composed of four colors of CMYK and three colors of RGB.

  In the image reproduction unit 430 in FIG. 5, a process reproduction image and a spot color reproduction image are obtained. As for the spot color reproduction image, seven types of spot color reproduction images corresponding to these seven kinds of color element groups are obtained.

  Here, the color range (gamut) that can be reproduced by each color element group is determined for each of the eight color element groups, that is, only the process color color element group and the seven color element groups including the special color. On the other hand, the gamut that can be handled by the color scanner 10 of FIG. 1 is also determined. Furthermore, the gamut corresponding to the color scanner 10 is wider than the gamut corresponding to each color element group. Therefore, in the image reproduction unit 410, the color of the original image is reproduced with colors in the gamut corresponding to each color element group, and a process reproduction image and seven types of special color reproduction images are obtained.

  The image reproduction unit 410 has a scanner profile 411 that defines the correspondence between the RGB color space depending on the color scanner 10 and the Lab color space independent of the device for the color scanner 10 in FIG. The RGB image data D1 representing the original image is first converted into Lab image data D2 representing the original image by the scanner profile 411.

  Further, the image reproduction unit 410 defines eight types of color conversions for each of the eight types of color element groups described above, in which the color of the original image represented by the Lab image data D2 is converted into colors in the gamut corresponding to the color element groups. Color conversion definition 412. Then, the image reproduction unit 410 converts Lab image data D2 representing the original image into eight types of L′ a′b ′ image data D3 representing reproduced images of the respective color element groups by color conversion using the color conversion definitions 412. Convert to Of these eight types of L'a'b 'image data D3, seven types of L'a'b' image data D3 representing seven types of special color reproduction images corresponding to the color element group including the special color are gamut comparison unit 420. Passed to. The seven types of L′ a′b ′ image data D3 and L′ a′b ′ image data D3 representing a process reproduction image corresponding to the color element group of only process colors are passed to the image comparison unit 430. .

  Furthermore, the image reproduction unit 410 has a monitor profile 413 that defines the correspondence between the RGB color space and the Lab color space depending on the image display device 120 (see FIG. 2), and has eight types of L′ a. Each of the 'b' image data D3 is converted into R'G'B 'data D4 for image display using the monitor profile 413. These eight types of R′G′B ′ data D4 are passed to the comparison result display unit 440.

  The gamut comparison unit 420 is given a gamut (process gamut) for a color element group of only process colors. The gamut comparison unit 420 searches for an image portion having a reproduction color outside the process gamut in the spot color reproduction image represented by each of the seven types of L'a'b 'image data D3 passed from the image reproduction unit 410.

  The image comparison unit 430 displays, in the spot color reproduction image, an image portion having a reproduction color different from that of the process reproduction image, L′ a′b ′ image data D3 representing the spot color reproduction image, and L′ a representing the process reproduction image. Search is performed by comparing the 'b' image data D3 with each other.

  The comparison result display unit 440 uses the eight types of R′G′B ′ data D4 passed from the image reproduction unit 410 and the search results of the gamut comparison unit 420 and the image comparison unit 430, respectively, The process reproduction images are displayed side by side on the monitor 120a as described below.

  FIG. 6 is a diagram illustrating an example of display contents by the comparison result display unit 440.

  As shown in FIG. 6, the comparison result display unit 440 displays a display screen having a spot color reproduction image display part 441 and a process reproduction image display part 442.

  Further, the display screen includes a color element group specifying unit 443 for specifying a color element group for reproducing the special color reproduction image displayed on the special color reproduction image display portion 441 through an operation of a pull-down menu 443a by the user. ing. The designated color element group is displayed on the display portion 443b of the color element group designation unit 443, and the special color reproduction image corresponding to the designated color element group is displayed on the special color reproduction image display portion 441.

  Further, the comparison result display unit 440 shown in FIG. 5 displays the spot color reproduction image in a form in which the image portion searched by the gamut comparison unit 420 or the image comparison unit 430 in the spot color reproduction image is explicitly shown. It has a function to do. In the display screen shown in FIG. 6, a gamut comparison display instruction unit 444 in which an explicit display of the image portion searched by the gamut comparison unit 420 is instructed through an operation of the radio button 444 a by the user, and an image comparison unit 430. And an image comparison display instruction unit 445 for instructing the explicit display of the image part searched for in the above-described manner through the operation of the radio button 445a by the user.

  The gamut comparison display instruction unit 444 is a radio button for instructing to display an image portion having a reproduction color outside the gamut of the color element group of only the process color searched by the gamut comparison unit 420 with a predetermined display color. 444b and, conversely, a radio button 444c for instructing to display the image portion having the reproduction color in the gamut by painting it. In the gamut comparison display instruction unit 444, when the radio button 444a for instructing the display of the image portion searched for by the gamut comparison unit 420 is clicked, an operation can be performed on the radio buttons 444b and 444c related to filling. Then, the spot color reproduction image is displayed in a form in which the image portion corresponding to the radio button clicked by the user among the two radio buttons 444b and 444c is filled.

  In addition, the image comparison display instruction unit 445 is a radio button 445b for instructing to display an image portion searched for by the image comparison unit 430 and having a reproduction color different from the process reproduction image with a predetermined display color. On the contrary, a radio button 445c for instructing to paint and display an image portion having the same reproduction color as the process reproduction image. In the image comparison display instructing unit 445, when the radio button 445a for instructing the display of the image portion searched for by the image comparing unit 430 is clicked, an operation can be performed on the radio buttons 445b and 445c regarding the filling. Then, the spot color reproduction image is displayed in a form in which the image portion corresponding to the radio button clicked by the user among the two radio buttons 445b and 445c is filled.

  Further, on the display screen shown in FIG. 6, the non-filling display instructing unit instructed to display the spot color reproduction image as it is without performing the painting of the image portion as described above through the operation of the radio button 446 a by the user. 446 is also provided.

  FIG. 6 shows an example in which the gamut comparison display instruction unit 444 has instructed to paint an image portion having a reproduction color outside the gamut. In response to such an instruction, the special color reproduction image display portion 441 displays the special color reproduction image in a form in which an image portion having a reproduction color outside the gamut is filled, as indicated by hatching in the drawing. Is done.

  The user can grasp how much the spot color contributes to the color reproducibility from the size of the filled image portion in the spot color reproduction image displayed in this way. In addition, when there is a color to be reproduced with high accuracy in the original image (for example, the color of a product in a product catalog), the spot color is determined from the position of the filled image portion in the spot color reproduction image. It is possible to grasp how much it contributes to color reproducibility. Further, by displaying the spot color reproduction image along with the process reproduction image as it is, it is possible to grasp how much the color reproducibility is improved by using the spot color.

  When the user selects a color element group optimal for color reproduction of each original image from the above seven types of color element groups, the user can select each color element by displaying the above-described special color reproduction image for each color element group. It is possible to obtain useful clues as to how much a group can perform color reproduction commensurate with cost and labor. Then, by comparing these cues obtained for each color element group with each other, it is possible to select the optimum color element group for printing from the above seven types of color element groups.

  In the above, as an example of the display unit according to the present invention, the special color reproduction image and the process reproduction image are displayed side by side, and for the special color reproduction image, the color element group of only the process color in the special color reproduction image is displayed. A gamut comparison unit 420, an image comparison unit 430, and a comparison result display unit 440 that display an image portion having a reproduction color outside the gamut or an image portion having a reproduction color different from that of the process reproduction image, distinguished from other image portions. However, the present invention is not limited to this. The display unit of the present invention displays, for example, only a special color reproduction image by distinguishing an image part having a reproduction color outside the gamut of the color element group of only the process color in the special color reproduction image from other image parts. In addition, for example, only a spot color reproduction image may be displayed by distinguishing an image part in the spot color reproduction image that is different from the process reproduction image from the other image parts. May be.

  Further, in the above, as an example of the display unit according to the present invention, the reproduction color is different from the image portion having the reproduction color outside the gamut of the color element group of only the process color in the special color reproduction image or the process reproduction image. Although the example having the comparison result display unit 440 that fills and displays other image portions other than those image portions is shown, the present invention is not limited to this. The display unit of the present invention may display, for example, the outline of the image part as described above in the spot color reproduction image, or may display the image part with hatching as described above. There may be.

  Further, in the above, as an example of the display unit according to the present invention, an example in which the comparison result display unit 440 that displays the spot color reproduction image and the process reproduction image is displayed on the monitor 120a has been described. However, the present invention is not limited thereto. It is not a thing. The display unit of the present invention may print these reproduced images on paper with a printer or the like, for example.

1 is an overall configuration diagram of a printing system to which an embodiment of the present invention is applied. FIG. 2 is an external perspective view of the personal computer 100 in FIG. 1. It is a hardware block diagram of the personal computer 100 of FIG. It is a schematic diagram which shows one Embodiment of the image display program of this invention. It is a block diagram which shows one Embodiment of the image display apparatus of this invention. It is a figure which shows an example of the display content by the comparison result display part 440. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Printing system 10 Color scanner 11 Original image 20 Film printer 30 Printing machine 31 Printed material 100 Personal computer 110 Main body apparatus 110a FD loading port 110b CD-ROM loading port 111 CPU
112 Main Memory 113 Hard Disk Device 114 FD Drive 115 CD-ROM Drive 116 I / O Interface 120 Image Display Device 120a Monitor 130 Keyboard 140 Mouse 150 Bus 200 FD
210 CD-ROM
DESCRIPTION OF SYMBOLS 300 Image display program 310 Image reproduction part 320 Gamut comparison part 330 Image comparison part 340 Comparison result display part 400 Image display apparatus 410 Image reproduction part 411 Scanner profile 412 Color conversion definition 413 Monitor profile 420 Gamut comparison part 430 Image comparison part 440 Comparison result Display unit 441 Special color reproduction image display part 442 Process reproduction image display part 443 Color element group designation part 443a Pull-down menu 443b Display part 444 Gamut comparison display instruction part 444a, 444b, 444c, 445a, 445b, 445c, 446a Radio button 445 Image comparison Display instruction section 446 Non-filled display instruction section

Claims (8)

An image reproduction unit that reproduces the color of the original image with a color element group including a plurality of reference color elements and color elements different from the reference color elements,
A display unit configured to display a reproduction image obtained by the image reproduction unit in a form in which a difference between color reproducibility in the reproduction image and color reproducibility by only the plurality of reference color elements can be confirmed; An image display device characterized by that.   2. The image display device according to claim 1, wherein the plurality of reference color elements are CMYK four color elements.   2. The display unit according to claim 1, wherein the display unit displays the reproduced image side by side with a reference reproduction image obtained by reproducing the color of the original image using only the plurality of reference color elements. Image display device.   The display unit is configured to distinguish the reproduced image in a form in which a reproduced color in the reproduced image is different from a reproduced color based on only the plurality of reference color elements, and another image portion in the reproduced image. The image display apparatus according to claim 1, wherein:   The display unit is configured to display a predetermined one of an image part in which a reproduced color in the reproduced image is different from a reproduced color based on only the plurality of reference color elements and another image part in the reproduced image. The image display apparatus according to claim 1, wherein the reproduced image is displayed by painting with a color.   The display unit displays the reproduced image in a form in which an image portion having a reproduced color outside a color range that can be expressed only by the plurality of reference color elements is distinguished from an image portion having a reproduced color within the color range. The image display device according to claim 1, wherein the image display device is a device.   The display unit displays a predetermined image portion of either an image portion having a reproduced color outside a color range that can be expressed only by the plurality of reference color elements or an image portion having a reproduced color within the color range. The image display apparatus according to claim 1, wherein the reproduced image is displayed in a color-filled form. Embedded in a computer, on the computer,
An image reproduction unit that reproduces the color of the original image with a color element group including a plurality of reference color elements and color elements different from the reference color elements,
A display unit configured to display a reproduction image obtained by the image reproduction unit in a form in which a difference between a reproduction color in the reproduction image and a reproduction color based only on the plurality of reference color elements can be confirmed; Image display program.

Images