JP5198740B2 - Color management system and color management method - Google Patents

Description

The present invention relates to a color management system and color management method, in particular, suitably to a technique for setting a color profile.

  In a color management system in which a computer and a display are connected by a cable or the like, it is necessary to select one suitable for drawing an image on the display from among a plurality of color profiles built in the computer. For example, Windows (registered trademark) -OS provides a means for a user to select a color profile corresponding to a display connected to a computer using a “screen property” function.

  In this case, if the actual color reproduction characteristics of the display and the information such as the white color temperature and the color reproduction range described in the color profile are significantly different, the color viewer software (Photoshop manufactured by Adobe in the United States) is compatible with the ICC profile. Etc.), when a color image taken with a digital camera or the like is opened, an error in color reproduction of the image becomes large, and an image having a color different from the original color is displayed.

  The color reproduction characteristics of the display depend on the setting of the white point mode (color preset mode) of the color display and the characteristics of the display device used. For example, in a general liquid crystal display, a color temperature setting from 5000K to 9300K is set. And it is possible to set a Gamma value from about 1.8 to about 2.6. Accordingly, if the display setting state and the combination of the display device and the color profile are wrong, a great trouble occurs in the color reproduction of the color image.

  In order to prevent such trouble, in Patent Document 1, the user visually compares the printed specimen and the corresponding specimen image data, and selects a color profile based on the input from the user based on the comparison result. A color management system is disclosed.

JP 2003-51957 A

  In the color management system disclosed in Patent Document 1, when the display device itself to be used or the color mode setting of the display is switched, it is necessary for the user to perform the selection of the color profile again. If forgotten, there is a problem that the above-mentioned color reproduction trouble occurs.

  In addition, since the user visually confirms the printed specimen, an unexpected color profile may be selected depending on conditions such as illuminance, color temperature, and color rendering properties of the illumination light at this time. There was a problem that such color reproduction troubles occurred.

  In other words, the conventional color management system has a problem that color reproduction troubles occur because an appropriate color profile cannot be set when used by a user with little computer knowledge.

The present invention has been made to solve the above problems, and an object thereof is to provide a proper color management system and color management method which can set the color profile.

Color management system according to the present invention has a multi several color profile, and a computer one select to generate image data based on this, its internal adjustment parameter changes of the plurality of color profiles And a display having communication means for bidirectionally communicating with the computer, and the computer detects whether the internal adjustment parameter has changed from the display using the communication means. When the internal adjustment parameter changes, the internal adjustment parameter is acquired from the display, and a color profile is selected or a new color profile is generated according to the change of the internal adjustment parameter.

According to the color management system of the present invention, the computer detects whether or not the internal adjustment parameter has changed from the display using communication means, and if the internal adjustment parameter has changed , obtains the internal adjustment parameter from the display. The color profile is selected or a new color profile is generated according to the change of the internal adjustment parameter. Therefore, a color profile can be set appropriately. Therefore, color reproduction troubles can be prevented even when used by a user with little computer knowledge.

  According to the present invention, a display monitor and a host computer connected to each other by a cable or the like are connected to a DDC / CI (Display Data Channel Command Interface) standard or a MCCS standard (Monitor Control Command Set) defined by VESA (Video Electronics Standards Association). Based on the above, bidirectional data communication is performed. As a result, the display monitor informs the host computer of an event generated by an operation such as OSD, and the host computer can read and acquire the internal adjustment parameter of the display monitor. Therefore, the host computer can automatically follow the change in the internal adjustment parameter of the display monitor and newly install or switch the color profile. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following, a case where the DDC / CI standard or the MCCS standard is used as a communication standard will be described. However, the present invention is not limited to this, and a USB (Universal Serial Bus) standard or the like may be used.

<Embodiment 1>
FIG. 1 is a configuration diagram illustrating a color management system 1 according to the first embodiment.

  As shown in FIG. 1, the color management system 1 includes an input / output terminal 110 of a host computer 100 composed of a PC (personal computer) and an input / output terminal 210 of a display monitor 200 using liquid crystal as a display device. It is configured to be connected via a cable 300 made of a VGA cable or a DVI cable.

  The host computer 100 controls an input / output terminal 110, a graphic board 120, a Windows operating system (OS) 130, an image file 140, a plurality of color profiles 150, an image viewer 160, and a color profile 150. Color profile control software 170 for this purpose.

  The graphic board 120 is connected to the display monitor 200 via input / output terminals 110 and 210, and includes a frame buffer 121, a LUT (Look Up Table) 122, a DA converter 123, and an I2C bus 124. Yes.

  An embedded color profile 141 is embedded in the image file 140.

  The color profile 150 is a color profile based on the ICC (International Color Consortium) standard, and includes color management information (not shown) regarding each peripheral device including the display monitor 200 and a color space. As will be described later, the optimum color profile 150 is selected from a plurality of color profiles 150 and designated as a default one (hereinafter, the designated one color profile 150 is simply designated as a default). Also referred to as a color profile 150).

  The OS 130 includes a color management module 131, a GDI (Graphic Device Interface) 132, a display driver (graphic card driver) 133, and a monitor driver 134. The image viewer 160 calculates drawing image data from the image file 140 based on the embedded color profile 141 and the default color profile 150.

  The display monitor 200 includes an input / output terminal 210, a liquid crystal panel 220, a control scaler IC 230, a microcomputer 240, and a plug and play memory 250.

  The control scaler IC 230 is connected to the liquid crystal panel 220. The microcomputer 240 is connected to the control scaler IC 230 and includes an MPU for setting color control parameters and the like in the control scaler IC 230. The plug-and-play memory 250 is for storing data based on the EDID (Extended Display Identification Data) standard. The microcomputer 240 has communication means 241 based on the DDC / CI standard. Although FIG. 1 shows a case where the display monitor 200 is provided with the microcomputer 240 separately from the control scaler IC 230, the present invention is not limited to this, and the microcomputer 240 may be included in the control scaler IC 230.

  FIG. 2 is a diagram showing an icon 171 for starting the color profile control software 170 of FIG. This icon 171 is displayed on the task tray 180 on the screen of the display monitor 200 (task tray resident software).

  FIG. 3 is a flowchart showing the operation (color management method) of the color profile control software 170 of FIG. In FIG. 2, the host computer 100 detects whether or not the internal adjustment parameter has changed in the display monitor 200 using the change detection flag. This change detection flag is implemented by pre-assigning to a virtual control panel (VCP) based on the MCCS standard, and the display monitor 200 is transmitted by sending a Get-VCP-Feature command from the host computer 100 to the display monitor 200. Can be read from the host computer 100 to the display monitor 200 by sending a Set-VCP-Feature command from the host computer 100 to the display monitor 200. These Get-VCP-Feature command and Set-VCP-Feature command are specified as DDC / CI commands.

  First, in step ST1, the color profile control software 170 is activated on the host computer 100. At this time, the host computer 100 reads from the display monitor 200 data such as a list of items that can be communicated with the display monitor 200 (specifically, Capabilities-Strings data defined in the DDC / CI standard). Attempt to release (specifically, a Capabilities-Strings-Request command is transmitted to the display monitor 200).

  Next, the process proceeds to step ST2, and the host computer 100 determines whether or not the reading in step ST1 has succeeded (specifically, the reply in response to the Capabilities-Strings-Request command is normal from the display monitor 200). If it is received by a simple protocol, it is determined that the reading is successful). If the reading is successful, the process proceeds to step ST8. If the reading fails, the process proceeds to step ST3.

  Next, in step ST3, the host computer 100 tries to read the change detection flag as described above from the display monitor 200. That is, the host computer 100 determines that the display monitor 200 does not support the Capabilities-Strings-Request command, and the internal adjustment parameter has changed in the display monitor 200 using the change detection flag instead of the Capabilities-Strings. (Specifically, a Get-VCP-Feature command is transmitted to the display monitor 200). Then, the process proceeds to step ST4.

  Next, in step ST4, the host computer 100 determines whether or not the change detection flag has been successfully read in step ST3 (specifically, the reply in response to the Get-VCP-Feature command is displayed on the display monitor). 200, it is determined that the display monitor 200 is compatible with the change detection flag and reading is successful). If the reading is successful, the process proceeds to step ST9, the color profile synchronization control process is performed, and the operation is terminated. If the reading is unsuccessful, the process proceeds to step ST6 to display an error, and then proceeds to step ST7. The process waits for a predetermined period and proceeds to step ST1.

  Next, in step ST8, the host computer 100 determines whether or not the display monitor 200 is compatible with the change detection flag (specifically, it is described in the Capabilities-Strings data read in step ST1). By referring to the VCP code, it is determined whether or not the change detection flag is allocated, that is, the display monitor 200 corresponds to the change detection flag in steps ST4 and ST8 using different methods. Or not). If it is compatible, the process proceeds to step ST9, the color profile synchronization control process is performed, and the operation is terminated. If not, the process proceeds to step ST6, an error is displayed, and then the process proceeds to step ST7. . Thus, one cycle of operation in the color management method according to the present embodiment is completed.

  FIG. 4 is a flowchart showing a detailed operation of the color profile synchronization control process in step ST9 of FIG.

  First, in step ST11, the host computer 100 attempts to read the change detection flag from the display monitor 200 (transmits a Get-VCP-Feature command to the display monitor 200), as in step ST3. That is, in FIG. 3, when the process proceeds from step ST2 to step ST8, the change detection flag reading operation in step ST3 is not performed, and therefore the same operation as step ST3 is performed in step ST11.

  Next, the process proceeds to step ST12, and the host computer 100 determines whether or not the change detection flag has been successfully read in step ST11, as in step ST4. If reading is successful, the process proceeds to step ST13. If reading fails, the process proceeds to step ST6.

  Next, in step ST13, the host computer 100 detects whether or not the internal adjustment parameter has changed in the display monitor 200 by referring to the change detection flag read in step ST11. If it has changed, the process proceeds to step ST14. If not, the process proceeds to step ST26, waits for a predetermined period, and then proceeds to step ST11.

  Next, in step ST14, the host computer 100 sets the change detection flag to the “no change” state and writes it to the display monitor 200 (specifically, when the value is “2” in the change detection flag). Is defined as a “changed” state and a value of “1” is defined as a “no change” state, the value of the change detection flag is set to “1” and written to the display monitor 200).

  That is, in steps ST13 to ST14, when the internal adjustment parameter changes in the display monitor 200, the change detection flag is set to the “no change” state, and then the color profile synchronization control processing in step ST15 and subsequent steps is performed. If the internal adjustment parameter does not change at 200, the color profile synchronization control process after step ST15 is not performed.

  In step ST15, the host computer 100 determines whether to newly generate a color profile ("Generate") or select from an existing color profile 150 ("Select") in the color profile synchronization control process. Let the user specify. Specifically, an image as shown in FIG. 5 is displayed on the display monitor 200, and “Generate” or “Select” is designated. If “Generate” is designated, the process proceeds to step ST16, and if “Select” is designated, the process proceeds to step ST17 (note that “Generate” is designated as will be described later in steps ST22 to ST24). Even in the case where a suitable color profile exists in the existing color profile 150, this is used, so that a new color profile may not necessarily be generated).

  Next, in step ST16, the host computer 100 reads out and acquires color profile generation data including the internal adjustment parameters of the display monitor 200 from the display monitor 200, writes the data in the memory built therein, and then performs step ST18. Proceed to

  Specifically, as the internal adjustment parameters, the VCP data shown in FIG. 6 and the EDID data shown in FIG. 7 are read using the communication means 241 based on the DDC / CI standard. FIG. 6 is a part of a VCP definition (VCP name) described in MCCS-Standard, and is applied to control of color information. FIG. 7 shows color management information stored in the plug-and-play memory 250 based on the EDID standard, and the x, y color temperatures on the RGB three primary colors and the white CIE-xy color temperature diagram in the display monitor 200. Is shown. FIG. 8 is a diagram showing the correspondence between values and definitions in the case of VCP code = “0x14” (color preset mode) in FIG. 6. As will be described later, the white point (color temperature) is derived. Used.

  Next, in step ST <b> 17, the host computer 100 reads the value of VCP code = “0x14” (FIG. 8) from among the internal adjustment parameters of the display monitor 200, and uses this value to select one of the existing color profiles 150. Select. Specifically, if five existing color profiles 150 as shown in FIG. 9 are installed in the host computer in advance, one of these is selected according to the value of VCP code = “0x14”. Select and specify as default color profile. The host computer 100 holds in advance a table showing the correspondence relationship in FIG. 9 in the form of a text file or the like. Then, the process proceeds to step ST26.

  Next, in step ST18, the host computer 100 detects whether or not the color management information (internal adjustment parameter) as described above has changed by referring to the color profile generation data read in step ST16. Specifically, detection is performed by performing sequential comparison with previously read data, but the comparison target is determined according to the specifications of the color profile to be generated as follows.

  For example, currently widely used ICC color profiles for display monitors include information on the color temperature points of RGB three primary colors and white, and TRC (Tonal Reproduction Curve; corresponding to Gamma characteristics) of each of the RGB three primary colors. 7 includes EDID address = “0x17”, “0x19” to “0x22” as shown in FIG. 7, and VCP code = “0x0B”, “0x0C”, “0x14” as partly shown in FIG. "," 0x72 ". Therefore, the host computer 100 compares only the information corresponding to the EDID address and the VCP code.

  If the color management information has changed, the process proceeds to step ST19. If the color management information has not changed, the process proceeds to step ST26, waits for a predetermined time, and then proceeds to step ST11.

  Next, in step ST19, the host computer 100 generates a color profile by performing arithmetic processing on the color profile generation data read from the display monitor 200 in step ST16 according to the following procedure. First, the white point is obtained using the definition of VCP code = “0x14” shown in FIG. The white point is determined as 6500K when the definition is “sRGB”, and is determined based on the specifications of the display device used in the display monitor 200 when the definition is “Display Native”. For example, in the case of a general liquid crystal display panel, it is 6500K. Next, the color temperature of the primary color is obtained using the color management information of EDID shown in FIG. It should be noted that the color temperature of the primary color is based on the value when the value is supported by VCP code = “0x72” (TRC corresponding to the Gamma characteristic). Thereby, a new color profile is generated (hereinafter, this generated color profile is also referred to as a new color profile).

In step ST20, the host computer 100 stores the new color profile generated in step ST19 and the default color profile 150 (in the Windows 130 OS 130, Windows / System32 / Spool / Drivers / Color folder). Is compared). Then, a difference is calculated for each of the primary color chromaticity coordinate values (x, y), the white chromaticity coordinate values (x, y), and TRC (Gamma).

  Next, proceeding to step ST21, the host computer 100 determines whether or not the color profile has changed based on the magnitude of the difference calculated at step ST20.

That is, the difference in the chromaticity coordinate value (x, y) of the primary color is ± 0.010 or less (first condition), and the difference in the chromaticity coordinate value (x, y) of white. Is not more than ± 0.002 (second condition) and the difference in TRC (Gamma) is not more than ± 0.1 (third condition) (that is, first to third). If all of the above conditions are satisfied), it is determined that the color profile has not changed (substantially). If it has changed, the process proceeds to step ST22. If it has not changed, the process proceeds to step ST26.

  Next, in step ST22, among the plurality of existing color profiles 150, the color profile 150 that is not designated as the default use satisfies the above first to third conditions (that is, new). It is searched whether or not (similar to a color profile) exists.

  Next, the process proceeds to step ST23, and it is determined whether to switch the color profile 150 or to perform a new installation based on the search result in step ST22. In other words, if there is one that satisfies all of the first to third conditions, the process proceeds to step ST24, and the color profile 150 is designated (switched) to be used as a default, and then the process proceeds to step ST26. If none of the above first to third conditions exists, the process proceeds to step ST25, where the new color profile generated in step ST19 is stored in the folder (new installation) and used by default. After designating as a thing, it progresses to step ST26. This completes the color profile synchronization control process.

  In the color profile synchronization control process described above, the designation of the default color profile 150 is changed only when all the first to third conditions are satisfied in step ST21. Accordingly, when a change within an allowable range in the display monitor 200 (that is, a relatively small change that does not satisfy any of the first to third conditions) occurs, the predetermined color profile 150 is unnecessarily large. It is possible to prevent the specification from being changed. Accordingly, it is possible to prevent the color reproduction characteristics in the color management system 1 from becoming unstable.

  In step ST23, the new color profile is stored in the folder and designated as the default color profile 150 only when all the first to third conditions are satisfied. Thereby, when a small change within the allowable range occurs in the display monitor 200, it is possible to prevent a user from being confused by generating a large number of color profiles 150 having slightly different specifications.

  FIG. 10 is a diagram showing an operation of switching the polling interval in the color profile control software 170. This polling cycle corresponds to the standby time in step ST26 in FIG. 4 (in other words, the interval for acquiring the color profile generation data in step S16). In FIG. 10, any one of 1s, 2s, or 3s is used. The case of selecting and setting is shown.

  FIG. 11 is a flowchart showing the operation of the display monitor 200 (microcomputer 240) in FIG. In FIG. 11, the display monitor 200 detects whether or not its own internal adjustment parameter has changed, and sets a change detection flag in accordance with the result. As described above, this change detection flag is implemented by pre-assigning to the VCP.

  First, in step ST31, the display monitor 200 is activated. At this time, the display monitor 200 always sets the change detection flag to the “changed” state. As a result, when the power of the color management system 1 is turned on or when the hardware connection of the display monitor 200 is changed, the change is detected and the color profile 150 setting in the host computer 100 and the internal adjustment parameters in the display monitor 200 are detected. It is possible to match the color reproduction information.

  Next, proceeding to step ST32, the display monitor 200 determines whether or not an input video signal or timing signal has changed. If not changed, the process proceeds to step ST33. If changed, the process proceeds to step ST35, and the change detection flag is set to the “changed” state, and then the process proceeds to step ST32. Thereby, when the internal adjustment parameter changes based on the change of the video signal or the timing signal, the change can be detected.

  Next, in step ST33, the display monitor 200 determines whether or not the internal adjustment parameter has been changed by an operation such as OSD, remote control, or external communication. If a change has been made, the process proceeds to step ST34, and if no change has been made, the process proceeds to step ST32. In the above determination, the change detection flag itself is excluded from the target. Thereby, the change itself of the change detection flag is regarded as a change, and the color management system 1 can be prevented from falling into a deadlock.

  Next, in step ST34, it is determined whether or not the changing operation in step ST33 is completed. If the change operation has not been completed, the process proceeds to step ST32. If the change operation has been completed, the process proceeds to step ST35. As a method for performing the above determination, for example, when the same internal adjustment parameter is repeatedly changed a predetermined number of times or more within a predetermined period, it is determined that the determination is not completed. Further, for example, in the case of an operation using the OSD, it is determined that the menu has been completed because the level of the menu has shifted to a level higher than the level where the operation is performed (for example, the level one level above which the adjustment item is selected). . As a result, even when the internal adjustment parameter is repeatedly changed by an operation using the OSD or the remote controller, it is possible to prevent the communication processing load from being increased more than necessary and the overall operation speed of the color management system 1 from being lowered. it can.

  As shown in FIG. 11, the display monitor 200 itself (that is, the microcomputer 240) may set the change detection flag to the “changed” state but not set to the “no change” state. . That is, the setting of the change detection flag to the “no change” state is always performed from the host computer 100 via the communication unit 241 as shown in FIG.

  FIG. 12 is a flowchart showing the operation of the image viewer 160 of FIG.

  First, in step ST41, the program of the image viewer 160 is activated. At this time, the image viewer 160 reads a predetermined color profile 150 (that is, a color profile for display monitor).

  In step ST42, the image viewer 160 decodes the color profile 150 read in step ST41, thereby extracting color management information (that is, display monitor color management information).

  Next, proceeding to step ST43, the image viewer 160 reads out and decodes the embedded color profile 141 (that is, the color profile for the image file) from the image file 140 to be displayed (for example, JPEG format, TIFF format, etc.). Thus, the color management information (that is, the color management information for the image file) such as the white point when the image file 140 is captured, sRGB, AdobeRGB, etc. is extracted.

  In step ST44, the image viewer 160 calculates drawing image data using the display monitor color management information extracted in step ST42 and the image file color management information extracted in step ST43. This is used to draw an image. As a result, it is possible to perform color management and color correction using the color profile 150 corresponding to the display 200 connected to the host computer 100 and draw an image.

  Next, proceeding to step ST45, the image viewer 160 determines whether or not the default color profile 150 has changed. If it has changed, the process proceeds to step ST41. If it has not changed, the process proceeds to step ST46.

  Next, in step ST46, the image viewer 160 determines whether or not to newly display an image file (referred to as an image file 140 ') different from the image file 140 (by user input or the like). If the image file 140 'is newly displayed, the process proceeds to step ST43. If the image file 140' is not newly displayed, the process proceeds to step ST47.

  Next, in step ST47, the image viewer 160 determines whether or not to print the image file 140 (by user input or the like). If printing is to be performed, the process proceeds to step ST48. If printing is not to be performed, the process proceeds to step ST49.

  Next, in step ST48, the image viewer 160 reads a printer color profile from a printer (not shown in FIG. 1) connected to the host computer 100, and decodes it to decode the printer color. Retrieve management information. Then, the image viewer 160 calculates printing image data using the printer color management information and the image file color management information extracted in step ST43, and prints an image using the data. Accordingly, it is possible to perform color management and color correction using a color profile corresponding to a printer connected to the host computer 100 and print an image. Then, the process proceeds to step ST49.

  Next, in step ST49, the image viewer 160 determines whether or not to end the program (by user input or the like). Then, if not finished, the process proceeds to step ST45, and if finished, the process is finished as it is. Accordingly, the default color profile 150 is periodically checked and re-recognized, and when the default color profile 150 changes, an image can be redrawn.

  When the image viewer 160 is operated as shown in FIG. 12 and the display monitor 200 is operated as shown in FIG. 11 and the internal adjustment parameter is changed by OSD operation or the like, the color is changed according to this change. The profile 150 can be changed to redraw the image. Therefore, the image can be changed according to the OSD operation or the like.

  In the above description, the case where the image viewer 160 periodically confirms the default color profile 150 has been described with reference to FIG. 12. However, the present invention is not limited to this and includes Windows when the color profile 150 is updated. By using event notification information generated by the OS 130, the default color profile 150 may be confirmed.

  As described above, according to the color management system and the color management method according to the present embodiment, the host computer 100 automatically follows the change in the internal adjustment parameter of the display monitor 200 and newly installs the color profile 150. And can be switched. Therefore, a color profile can be set appropriately. Therefore, color reproduction troubles can be prevented even when used by a user with little computer knowledge.

  In the above description, the case where the user selects the interval for acquiring the color profile generation data from a plurality of preset values has been described with reference to FIG. May input an arbitrary value. Alternatively, the color profile synchronization control process of FIG. 4 may be skipped by an input from the user.

1 is a configuration diagram illustrating a color management system according to Embodiment 1. FIG. FIG. 5 is a diagram showing an icon 171 for starting color profile control software according to the first embodiment. 4 is a flowchart showing the operation of the color profile control software according to the first embodiment. 5 is a flowchart showing a detailed operation of color profile synchronization control processing according to the first embodiment; FIG. 6 is a diagram illustrating an operation for allowing a user to specify whether to newly generate a color profile or select an existing color profile in the color profile control software according to the first embodiment. It is a figure which shows a part of definition of VCP. It is a figure which shows the color management information memorize | stored based on EDID specification in the memory for plug and play concerning Embodiment 1. FIG. It is a figure which shows a response | compatibility with a value and definition in VCP code = "0x14". It is a figure which shows a response | compatibility with a value and a color profile name in VCP code = "0x14". FIG. 5 is a diagram illustrating an operation for switching a polling cycle in the color profile control software according to the first embodiment. 3 is a flowchart showing an operation of the display monitor according to the first embodiment. 6 is a flowchart showing an operation of the image viewer according to the first embodiment.

Explanation of symbols

1 color management system, 100 host computer, 110, 210 input / output terminal, 120 graphic board, 121 frame buffer, 122 LUT, 123 DA converter, 124 I2C bus, 130 OS, 131 color management module, 132 GDI, 133 display driver, 134 Monitor Driver, 140 Image File, 141 Embedded Color Profile, 150 Color Profile, 160 Image Viewer, 170 Color Profile Control Software, 171 Icon, 180 Task Tray, 200 Display Monitor, 220 LCD Panel, 230 Control Scaler IC, 240 Microcomputer 241 communication means, 250 plug and play memory, 300 cables.

Claims (6)

A computer having a plurality of color profiles, selecting one of the plurality of color profiles and generating image data based thereon;
Means for detecting whether or not its own internal adjustment parameters have changed, and a display having communication means for bidirectionally communicating with the computer,
The computer detects whether the internal adjustment parameter has changed from the display using the communication means, and when the internal adjustment parameter has changed, obtains the internal adjustment parameter from the display, A color management system that selects the color profile or newly generates a color profile in accordance with a change in an adjustment parameter. The color management system according to claim 1,
The color management system, wherein the communication unit is a communication unit based on a DDC / CI standard defined by VESA. The color management system according to claim 1 or 2,
Means for causing the user to specify whether to perform the selection or the new generation in the process of selecting the color profile or generating a new color profile;
Means for determining whether or not a difference between a newly generated color profile and an existing color profile satisfies a certain condition when the new creation is specified;
When the determination unit determines that the certain condition is satisfied, the computer uses the existing color profile without using the newly generated color profile. The color management system according to claim 3,
The color management system, wherein the predetermined condition is a difference condition calculated for a primary color chromaticity coordinate value, a white chromaticity coordinate value, and a TRC. The color management system according to any one of claims 1 to 4,
Means for setting a period of the acquisition operation;
The color management system in which the acquisition is performed for each period set by the setting unit. Detecting whether its own internal adjustment parameter has changed on the display; and
In the computer, detecting whether or not the internal adjustment parameter has changed using a communication means for bidirectionally communicating with the computer from the display;
If the internal adjustment parameter has changed, obtaining the internal adjustment parameter from the display to the computer;
In the computer, in response to a change in the internal adjustment parameter, selecting the color profile or generating a new color profile;
Generating image data based on the selected or newly generated one color profile in the computer;
A color management method comprising:

Images