JP2010010838A - Image processing apparatus, image processing method, and image processing program - Google Patents

Abstract

An image processing apparatus capable of simulating the degree of fading of a printed matter on a monitor.
SOLUTION: Setting means for setting conditions for simulation; first conversion means for converting image data to be simulated into data indicating color material information; and data indicating converted color material information as target Second conversion means for converting into data indicating chromaticity information, third conversion means for converting the data indicating the converted color material information into data indicating the degree of color fading as chromaticity information, Using the data converted by the second conversion means and the data converted by the third conversion means, the simulation means for simulating the faded color according to the conditions set by the setting means, and the simulation Display means for displaying the faded color and the target color in parallel;
[Selection] Figure 2

Description

  The present invention relates to an image processing apparatus that performs print processing.

  Conventionally, there is a problem that the color of printed matter is faded by light or gas. In an inkjet printer, an attempt has been made to protect a printed surface from light by laminating the printed material in order to provide a printed material with excellent light resistance (Patent Document 1). According to the invention of Patent Document 1, a transfer layer containing an ultraviolet absorber, a light stabilizer, and a fluorescent brightening agent is laminated on the printing surface. As a result, in the light transmitted through the transfer layer, the light in the wavelength region of 300 to 380 nm, which causes the deterioration of the dye, is effectively absorbed and cut by the ultraviolet absorber and the fluorescent brightening agent. The light resistance of the printed image can be significantly improved.

  In addition, attempts have been made to improve the light resistance of the ink itself, rather than laminating it on the printed matter. For example, Patent Document 2 proposes an ink using an organic pigment modified with a metal compound. The proposal describes that the high saturation and high colorability, which are the advantages of organic pigments, can be maintained, and the light resistance, which is a drawback, can be improved without impairing the clogging properties and storage stability of the head nozzle. Yes.

In particular, large-format printers capable of A0 and B0 size printing are used as posters or the like to be displayed outdoors, and therefore there is a great demand for printed materials with excellent light resistance.
JP 2004-180278 A JP-A-11-172170

  Conventionally, various attempts have been made to improve the light resistance of the printed material itself. However, even if the light resistance of the printed matter itself is improved, the printed matter is not a little discolored.

  The degree of fading differs depending on how the printed material is stored, where it is posted, and the storage period and posting period. In particular, when a poster or the like is posted outdoors that are strongly affected by ultraviolet rays, the color fading progresses more than when posted indoors, and the degree of color fading increases as the posting period increases.

  Also, when creating a printed material, the user does not know how long the color of the printed material will fade, so it is not possible to know how long the posters posted outdoors should be replaced. There was no problem.

  In addition, with respect to printed matter exhibited at exhibitions and the like, there is a problem that colors fade in the latter half of the exhibition period when the exhibition period is long. Further, since the progress of fading is fast, there is a problem that updating the printed matter in a short period of time leads to an increase in printing cost.

  In view of the above-described points, the first object of the present invention is to provide an image processing apparatus that can simulate the degree of fading of a printed matter on a monitor.

  It is a second object of the present invention to provide an image processing apparatus that predicts a color change due to fading and performs color correction in a direction opposite to the fading direction to make the influence of fading inconspicuous.

  Furthermore, it is intended to provide an image processing apparatus that allows a user to set a time when a color can fade and reproduce a target color by predicting a color change due to fading and correcting the color in the direction opposite to the fading direction. Third purpose.

  An image processing apparatus according to the present invention is an image processing apparatus that simulates fading of a printed matter of image data, and includes setting means for setting conditions for simulation based on an input by a user, and image data to be simulated. First conversion means for converting into data indicating color material information, and second conversion means for converting data indicating color material information converted by the first conversion means into data indicating target chromaticity information And a third conversion means for converting the data indicating the color material information converted by the first conversion means into data indicating the degree of color fading as chromaticity information, and the data converted by the second conversion means, A simulation for simulating a faded color according to the conditions set by the setting means using the data converted by the third conversion means Comprising a Deployment means, and the color was faded, which is simulated by the simulation means, and display means for displaying the color which is a target in parallel.

  According to the present invention, the degree of fading of a printed material can be simulated on a monitor.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings. In addition, the same reference number is attached | subjected to the same component and description is abbreviate | omitted.

  FIG. 1 is a diagram showing a block configuration of an image processing system capable of fading simulation used in the embodiment according to the present invention. As shown in FIG. 1, a color-managed monitor 102 is connected to the host PC 101. The user can perform a color fading simulation of the image data in the present embodiment while looking at the monitor 102. Further, a printer 103 for printing image data is connected to the host PC 101. The fading simulation is performed based on the color reproduction and fading characteristics of the connected printer 103.

  FIG. 5 is a diagram showing a concept when an image is recorded in the ink jet printer used in the present embodiment. In the head 501 for recording an image, a plurality of nozzles for ejecting ink are arranged in one row or in a plurality of rows, and there are as many as the number of ink colors. For example, the nozzle arrays for discharging cyan ink and the nozzle arrays for discharging magenta ink are arranged. An image is recorded while the head 501 moves right and left on the paper 502 (that is, in the main scanning direction). Each time the head 501 scans in the main scanning direction, the paper 502 is fed in the sub-scanning direction. By repeating the above, an image can be formed on the sheet 502. The printer used in this embodiment is not limited to an ink jet printer, and is an electrophotographic printer, a silver salt photo printer, a sublimation printer, or a printing machine that records with toner. Also good.

  In this embodiment, the host PC 101 uses an information processing apparatus that is generally widely used. FIG. 6 is a diagram illustrating a configuration of an information processing apparatus applied to the host PC 101. The CPU 601 executes an OS or a general application stored in the ROM 603 or loaded from the hard disk (HD) 611 to the RAM 602 and the program according to the present invention. The RAM 602 functions as a main memory, work area, and the like for the CPU 601. A keyboard controller (KBC) 605 controls key input from a keyboard 610 or a pointing device (not shown). A CRT controller (CRTC) 606 controls display on the monitor 102. A disk controller (DKC) 607 controls access to a hard disk (HD) 611 or the like that stores a boot program, various applications, font data, user files, electronic document files, and the like. A printer controller (PRTC) 608 controls exchange of signals with the connected printer 103. A network controller (NC) 609 is connected to the network and executes communication control processing with other devices connected to the network. Further, the CPU 601 controls each of the above units via the system bus 604.

  FIG. 2 is a diagram showing a functional block configuration of the fading simulation in the first embodiment according to the present invention.

  First, the user sets necessary items for performing a fading simulation on the monitor 102 via the user interface 201. In the present embodiment, items that change the degree of fading described below are set as setting contents by the user.

  The user first selects image data to be simulated. Next, the user selects a medium. In selecting the media, for example, the user can select glossy paper, coated paper, or plain paper as the paper to be used. There are various types of paper, such as glossy paper, coated paper, and plain paper, but the color reproduction range differs depending on the paper, and the method of fading also differs. For example, in the case of glossy paper, yellow and cyan tend to fade and tend to change to a magenta color. On the other hand, in the case of coated paper, since cyan tends to fade, it tends to change to a reddish color. As described above, since the characteristics differ depending on the paper, it is necessary to select and specify the paper used for printing.

  Next, the user selects a posting method. In selecting the posting method, for example, the user can select whether indoor or outdoor, and whether the frame is framed or not. Since the method of fading is different between the case where it is posted indoors where the fluorescent light hits and the case where it is posted outdoors where the sunlight hits, the user selects the posting method. Moreover, the method of fading also changes with whether it is put in the forehead of the glass or not. Next, the user designates a posting period. This is because the degree of fading varies depending on the posting period.

  As described above, user setting items are set via the user interface 201 displayed on the monitor 102. Then, the host PC 101 appropriately extracts a necessary LUT from the database 204 in which a lookup table (hereinafter also referred to as LUT) is stored, and uses it for color conversion processing in a fading simulation.

  Next, the fading simulation process in the present embodiment will be described with reference to FIG. In the present embodiment, the image data 205 selected by the user is subjected to color processing as described below and displayed on the monitor 102 as a fading simulation result.

  First, the host PC 101 converts the image data 205 selected by the user into color material information such as YMCK. The image data 205 is, for example, rasterized bitmap data. Further, it may be sRGB data or AdobeRGB data. In this case, the host PC 101 converts the image data into color material information by taking out and referring to the conversion LUT 206 from the database 204 (an example of first conversion means)).

  Next, the host PC 101 converts the color material information into chromaticity information such as “L * a * b *” that fades under a predetermined condition, and also does not depend on the device such as “L * a * b *”. Convert to chromaticity information. In this case, the host PC 101 converts the color material information into chromaticity information that fades under a predetermined condition by taking out and referring to the conversion LUT 207 from the database 204 (an example of a third conversion unit). Also, the host PC 101 converts the color material information into chromaticity information independent of the device by taking out the conversion LUT 209 from the database 204 and referring to it (an example of second conversion means). The chromaticity information converted by the LUT 209 indicates the color before fading.

  Here, the chromaticity information that fades under a predetermined condition refers to what color will be reproduced after 10 years, for example, depending on whether it is posted indoors or outdoors, or placed in a glass frame. This means chromaticity information that has been subjected to an accelerated test. In the present embodiment, not only data after 10 years but data after 1 year or 100 years may be used. The chromaticity information converted by the LUT 207 indicates, for example, the chromaticity fading amount in one year.

  Next, the host PC 101 performs a fading prediction process 208 from the chromaticity information converted by the LUTs 207 and 209 and the posting period selected by the user.

  In the fading prediction processing 208, the color reproduction prediction at the end of the posting period designated by the user is performed from the fading information under a predetermined condition converted by the LUT 207 and the chromaticity information when not fading converted by the LUT 209. Do. Prediction of color reproduction is performed by predicting color reproduction (L * a) by linear interpolation according to the time ratio between a predetermined period (such as the above-mentioned one year) defined in the LUT 207 and the posting period specified by the user. * B *) is calculated. For example, when the posting period specified by the user is 6 months and the predetermined period set in the LUT 207 is one year, the color fading amount is one half of one year.

  Next, the host PC 101 converts the chromaticity information that has been predicted to fade by the fading prediction process 208 and the chromaticity information that has not been faded and that has been converted by the LUT 209 into RGB information that is data that can be displayed on the monitor. In this case, the host PC 101 converts the chromaticity information into RGB information by taking out and referring to the conversion LUT 210 from the database 204.

  The screen data of the monitor 102 displays the image data predicted to fade (the color at the end of posting is reproduced). That is, an output from the fading prediction process 208 via the LUT 210 is displayed on the screen 203. In addition, image data when the color does not fade is displayed on the screen 202 (the color at the start of posting is reproduced). That is, the output from the LUT 209 via the LUT 210 is displayed on the screen 202.

  As described above, the color fading simulation results are displayed on the screens 202 and 203 in accordance with the printing method, posting method, storage period, and posting period specified by the user. In this case, since the color reproduction at the start and end of the posting of the image to be printed is displayed in parallel, the user can check on the monitor how much the color of the printed material has faded.

  FIG. 3 is a diagram showing a functional block configuration of fading simulation in the second embodiment according to the present invention.

  First, the user sets necessary items for performing a fading simulation on the monitor 102 via the user interface 301. In the present embodiment, items for changing the degree of fading described below are set by the user.

  First, the user selects image data to be printed. Next, the user selects a medium. In selecting the media, for example, the user can select glossy paper, coated paper, or plain paper as the paper to be used. There are various types of paper, such as glossy paper, coated paper, and plain paper, but the color reproduction range differs depending on the paper, and the method of fading also differs. For example, in the case of glossy paper, yellow and cyan tend to fade and tend to change to a magenta color. On the other hand, in the case of coated paper, since cyan tends to fade, it tends to change to a reddish color. As described above, since the characteristics differ depending on the paper, it is necessary to select and specify the paper used for printing.

  Next, the user selects a posting method. In selecting the posting method, for example, the user can select whether indoor or outdoor, and whether the frame is framed or not. Since the method of fading is different between the case where it is posted indoors where the fluorescent light hits and the case where it is posted outdoors where the sunlight hits, the user selects the posting method. Moreover, the method of fading also changes with whether it is put in the forehead of the glass or not. Next, the user designates a posting period. This is because the degree of fading varies depending on the posting period.

  In this embodiment, the fading correction intensity is further designated. Here, the fading correction strength refers to the degree to which color correction processing is applied to the chromaticity information converted by the LUT 209 in the case where no fading occurs so as to have a hue opposite to the fading direction. Accordingly, if the fading correction intensity is set to be weak, fading correction is performed weakly, so that the color is slightly corrected in the direction opposite to the fading direction and output from the target color reproduction. Here, the target color refers to chromaticity information when no fading is converted by the LUT 209. For this reason, the color becomes close to the target color reproduction in the initial period of the posting period, but the degree of fading increases in the second half of the posting period in which the fading has advanced. On the other hand, if the fading correction intensity is set to a strong value, fading correction is applied strongly, so in the initial stage of the posting period, the fading correction is applied to a color that is far from the target color reproduction, but fading has progressed. In the second half of the posting period, the color is close to the target color reproduction.

  As described above, user setting items are set via the user interface 301 displayed on the monitor 102. Then, the host PC 101 appropriately extracts a necessary LUT from the database 305 in which the LUT is stored, and uses it for color conversion processing in the fading simulation.

  Next, the fading simulation process in the present embodiment will be described with reference to FIG. In the present embodiment, the image data 205 selected by the user is subjected to color processing as described below and displayed on the monitor 102 as a fading simulation result.

  First, the host PC 101 converts the image data 205 selected by the user into color material information such as YMCK. In this case, the host PC 101 converts the image data into color material information by taking out the LUT 206 for conversion from the database 204 and referring to it.

  Next, the host PC 101 converts the color material information into chromaticity information such as “L * a * b *” that fades under a predetermined condition, and also does not depend on the device such as “L * a * b *”. Convert to chromaticity information. In this case, the host PC 101 converts the color material information into chromaticity information that fades under a predetermined condition by taking out and referring to the conversion LUT 207 from the database 204. In addition, the host PC 101 converts the color material information into chromaticity information that does not depend on a device by taking out and referring to the conversion LUT 209 from the database 204.

  Next, the host PC 101 performs a fading prediction process 208 from the chromaticity information converted by the LUTs 207 and 209 and the posting period selected by the user. The fading prediction process is the same as that described in the first embodiment.

  In the present embodiment, the host PC 101 performs a color correction process 306 from the chromaticity information obtained in the fading prediction process 208 and the chromaticity information that is converted by the LUT 209 and does not fade.

  The fading correction process refers to, for example, correcting “L * a * b *” in the direction opposite to the fading direction in the “L * a * b *” space. In this case, the degree of correction (correction amount) is determined according to the fading correction intensity specified by the user.

  When the correction intensity is set strongly by the user, color correction processing is performed on the target color (that is, chromaticity information when no color fading is converted by the LUT 209) so that the fading correction amount is increased. As described above, in that case, the target color reproduction is close at the end of the posting. On the other hand, when the correction strength is set weak by the user, the target color is subjected to color correction processing so that the fading correction amount becomes small. In that case, it will be close to the target color reproduction at the start of posting.

  Next, the host PC 101 displays, on the monitor, the chromaticity information that has been predicted to fade by the fading prediction process 208, the chromaticity information that has not been faded and that has been converted by the LUT 209, and the chromaticity information that has undergone the color correction process 306. Convert to RGB information, which is possible data. In this case, the host PC 101 converts the chromaticity information into RGB information by taking out and referring to the conversion LUT 210 from the database 305.

  The screen data of the monitor 102 displays the image data predicted to fade (the color at the end of posting is reproduced). That is, the output from the fading prediction process 208 via the LUT 210 is displayed on the screen 304. In addition, image data when the color does not fade is displayed on the screen 303 (the color at the start of posting is reproduced). That is, the output from the LUT 209 through the LUT 210 is displayed on the screen 303. Further, image data that has been subjected to color fading correction (the color at the start of posting is reproduced) is displayed on the screen 302 of the monitor 102. In other words, the output from the color correction process 306 via the LUT 210 is displayed on the screen 302.

  In the present embodiment, the user can confirm color reproduction at the start and end of posting for target color reproduction on the monitor 102. In this case, if the degree of fading is large, check the color reproduction at the start and end of posting on the monitor 102 by checking the result of shortening the posting period or changing the fading correction intensity. Can do.

  When printing is performed based on the simulation result, chromaticity information based on the set color fading correction intensity is converted into color material information of the printer. In this case, the host PC 101 converts the chromaticity information into color material information by taking out and referring to the conversion LUT 307 from the database 305. Here, the image displayed on the screen 302 is printed.

  As described above, the color fading simulation results are displayed on the screens 302, 303, and 304 in accordance with the storage and posting method, the storage and posting period, and the fading correction intensity specified by the user. In this case, since the color reproduction at the start and end of the posting of the image to be printed is displayed in parallel with the target color reproduction, the user should confirm on the monitor how much the color of the printed material is faded. Can do. In addition, the user can determine how long the printed material can be posted.

  Further, by performing color correction in the direction opposite to the direction of fading in accordance with the fading correction intensity specified by the user, the influence of fading can be made inconspicuous. As a result, the posting period of the printed material can be set long, and the cost can be reduced compared to the case where the printed material is printed in a short period.

  FIG. 4 is a diagram showing a functional block configuration of the fading simulation in the third embodiment according to the present invention.

  First, the user sets necessary items for performing a fading simulation on the monitor 102 via the user interface 401. In the present embodiment, items for changing the degree of fading described below are set by the user.

  First, the user selects image data to be printed. Next, the user selects a medium. In selecting the media, for example, the user can select glossy paper, coated paper, or plain paper as the paper to be used. There are various types of paper, such as glossy paper, coated paper, and plain paper, but the color reproduction range differs depending on the paper, and the method of fading also differs. For example, in the case of glossy paper, yellow and cyan tend to fade and tend to change to a magenta color. On the other hand, in the case of coated paper, since cyan tends to fade, it tends to change to a reddish color. As described above, since the characteristics differ depending on the paper, it is necessary to select and specify the paper used for printing.

  Next, the user selects a posting method. In selecting the posting method, for example, the user can select whether indoor or outdoor, and whether the frame is framed or not. Since the method of fading is different between the case where it is posted indoors where the fluorescent light hits and the case where it is posted outdoors where the sunlight hits, the user selects the posting method. Moreover, the method of fading also changes with whether it is put in the forehead of the glass or not. Next, the user designates a posting period. This is because the degree of fading varies depending on the posting period.

  In the present embodiment, it is further designated at which time in the posting period the target color is to be reproduced. Color correction processing is performed in consideration of fading so that the target color is reproduced at the time designated by the user, and the result is printed on the printer 103.

  For example, in the case of a poster or the like for advertisement, when a large number of people (customers or the like) who see the poster are expected in the initial stage of the posting period, the target color is set to be reproduced in the initial stage of the posting. As a result, color correction processing is performed so as to achieve target color reproduction at the initial stage of posting.

  If a large number of people are expected to view the poster in the second half of the posting period, the target color is set to be reproduced in the second half of the posting period. As a result, color correction processing is performed so as to reproduce the target color in the latter half of the posting period.

  As described above, user setting items are set via the user interface 401 displayed on the monitor 102. Then, the host PC 101 appropriately extracts a necessary LUT from the database 405 in which the LUT is stored, and uses it for color conversion processing in the fading simulation.

  Next, the fading simulation process in the present embodiment will be described with reference to FIG. In the present embodiment, the image data 205 selected by the user is subjected to color processing as described below and displayed on the monitor 102 as a fading simulation result.

  First, the host PC 101 converts the image data 205 selected by the user into color material information such as YMCK. In this case, the host PC 101 converts the image data into color material information by taking out the LUT 206 for conversion from the database 405 and referring to it.

  Next, the host PC 101 converts the color material information into chromaticity information such as “L * a * b *” that fades under a predetermined condition, and also does not depend on the device such as “L * a * b *”. Convert to chromaticity information. In this case, the host PC 101 converts the color material information into chromaticity information that fades under a predetermined condition by taking out the LUT 207 for conversion from the database 405 and referring to it. Further, the host PC 101 converts the color material information into chromaticity information that does not depend on a device by taking out the LUT 209 for conversion from the database 405 and referring to it.

  Next, the host PC 101 performs a fading prediction process 208 from the chromaticity information converted by the LUTs 207 and 209 and the posting period selected by the user. The fading prediction process is the same as that described in the first embodiment.

  Further, the host PC 101 performs color correction processing 306 from the chromaticity information obtained in the fading prediction processing 208 and chromaticity information that does not fade. Next, a color correction process 306 is performed from the chromaticity information obtained in the fading prediction process 208 and the chromaticity information that is converted by the LUT 209 and does not fade. The fading correction process is the same as that described in the first embodiment. However, in this embodiment, for example, the degree of correction (correction amount) is determined according to the time when the printed material designated by the user becomes the target color. Is done.

  If the target color time is set at the start of posting, processing is performed so that fading correction is not applied. On the other hand, when the target color reproduction is set at the end of the posting, the fading correction process is performed by adjusting the fading correction amount so that the target color reproduction is achieved at the end of the posting.

  Next, the host PC 101 displays, on the monitor, the chromaticity information that has been predicted to fade by the fading prediction process 208, the chromaticity information that has not been faded and that has been converted by the LUT 209, and the chromaticity information that has undergone the color correction process 306. Convert to RGB information, which is possible data. In this case, the host PC 101 converts the chromaticity information into RGB information by taking out the LUT 210 for conversion from the database 405 and referring to it.

  Image data predicted to be faded (the color at the end of posting is reproduced) is displayed on the screen 404 of the monitor 102. That is, the output from the fading prediction process 208 via the LUT 210 is displayed on the screen 304. Further, the image data when the color is not faded is displayed on the screen 403 (the color at the start of posting is reproduced). That is, the output from the LUT 209 through the LUT 210 is displayed on the screen 303. Further, image data that has been subjected to fading correction (the color at the start of posting is reproduced) is displayed on the screen 402. In other words, the output from the color correction process 306 via the LUT 210 is displayed on the screen 302.

  In the present embodiment, the user can confirm color reproduction at the start and end of posting for target color reproduction on the monitor 102. In this case, if the degree of color fading is large, the color reproduction at the start and end of the posting can be confirmed on the monitor 102 by checking the result of shortening the posting period or changing the timing for the target color reproduction. Can be confirmed.

  When printing is performed based on the simulation result, chromaticity information based on the time when the target color is to be reproduced is converted into color material information of the printer. In this case, the host PC 101 converts the chromaticity information into color material information by taking out and referring to the conversion LUT 307 from the database 405. Here, the image displayed on the screen 402 is printed.

  As described above, it is possible to specify the time when the target color is reproduced as a result of the color fading by the user, and perform color correction so that the color is in the direction opposite to the color fading direction. As a result, it is possible to create a printed material at a time when the target color reproduction is desired. Further, the user can specify the color at the start and end of posting of the image to be printed for the target color reproduction by specifying the storage and posting method of the printed matter, or the storage and posting period, and the time when the target color is to be obtained. Reproduction can be confirmed in parallel and displayed simultaneously.

  In the present invention, an operating system (OS) or the like running on a computer performs part or all of actual processing based on an instruction of a program (image processing program) code, and the processing of the above-described embodiment is performed by the processing. This includes cases where functions are realized. Furthermore, the present invention is also applied to the case where the program code read from the storage medium is written in a memory provided in a function expansion card inserted into the computer or a function expansion unit connected to the computer. In that case, based on the instruction of the written program code, the CPU or the like provided in the function expansion card or function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing. The

1 is a block diagram of a print system capable of fading simulation used in an embodiment according to the present invention. It is a figure which shows the functional block structure of the fading simulation in 1st Embodiment which concerns on this invention. It is a figure which shows the functional block structure of the fading simulation in 2nd Embodiment which concerns on this invention. It is a figure which shows the functional block structure of the fading simulation in 3rd Embodiment which concerns on this invention. It is a figure which shows the concept at the time of recording an image in the inkjet printer used in this embodiment. 2 is a diagram illustrating a configuration of an information processing apparatus applied to a host PC 101. FIG.

Explanation of symbols

201 User interface 202, 203, 302, 303, 304, 402, 403, 404 Screen 501 Head 502 Paper

Claims (11)

An image processing apparatus that simulates fading of a printed matter of image data,
Setting means for setting conditions for simulation based on input by the user;
First conversion means for converting image data to be simulated into data indicating color material information;
Second conversion means for converting data indicating color material information converted by the first conversion means into data indicating target chromaticity information;
Third conversion means for converting the data indicating the color material information converted by the first conversion means into data indicating the degree of color fading as chromaticity information;
Simulation means for simulating a faded color in accordance with conditions set by the setting means using the data converted by the second conversion means and the data converted by the third conversion means; ,
An image processing apparatus comprising: display means for displaying in parallel the faded color simulated by the simulation means and the target color.   The setting content by the setting means is at least one of image data to be printed, paper type to be printed, method for posting printed matter, and period for posting printed matter. Image processing apparatus.   Using a result simulated by the simulation means, further comprising a correction means for correcting the color in a direction opposite to the fading for the target color indicated by the data converted by the second conversion means. The image processing apparatus according to claim 2.   The image processing apparatus according to claim 3, wherein the setting unit further sets a correction intensity indicating a degree of color correction in a direction opposite to the color fading. The correction unit corrects the color in the opposite direction to the fading using the correction intensity set by the setting unit,
The image processing apparatus according to claim 4, wherein the display unit further displays the color corrected by the correction unit.   The image processing apparatus according to claim 3, wherein the setting unit further sets a time when the printed material becomes a target color indicated by the data converted by the second conversion unit. The correction unit corrects the color in the opposite direction to the fading using the time set by the setting unit,
The image processing apparatus according to claim 6, wherein the display unit further displays the color corrected by the correction unit.   An image processing system comprising: the image processing apparatus according to claim 1; and a printer that prints the image data.   The image processing system according to claim 8, wherein the printer is an inkjet printer. An image processing method executed in an image processing apparatus that simulates fading of a printed matter of image data,
A setting step in which the setting means of the image processing apparatus sets a simulation condition based on an input by a user;
A first conversion step in which the first conversion means of the image processing apparatus converts image data to be simulated into data indicating color material information;
A second conversion step in which the second conversion means of the image processing apparatus converts the data indicating the color material information converted in the first conversion step into data indicating the target chromaticity information;
A third conversion step in which the third conversion means of the image processing apparatus converts the data indicating the color material information converted in the first conversion step into data indicating the degree of color fading as chromaticity information;
The simulation means of the image processing apparatus uses the data converted in the second conversion step and the data converted in the third conversion step, according to the conditions set in the setting step, A simulation process for simulating faded colors;
An image processing method, wherein the display means of the image processing apparatus includes a display step of displaying the faded color simulated in the simulation step and the target color in parallel. An image processing program for simulating the fading of printed matter of image data,
Setting means for setting conditions for simulation based on input by the user;
First conversion means for converting image data to be simulated into data indicating color material information;
Second conversion means for converting data indicating color material information converted by the first conversion means into data indicating target chromaticity information;
Third conversion means for converting the data indicating the color material information converted by the first conversion means into data indicating the degree of color fading as chromaticity information;
Simulation means for simulating a faded color in accordance with conditions set by the setting means using the data converted by the second conversion means and the data converted by the third conversion means; ,
An image processing program for causing a computer to function as display means for displaying in parallel a faded color simulated by the simulation means and a target color.

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