KR20130033286A - Color calibration system and method including image processing apparatus and display apparatus - Google Patents

Abstract

PURPOSE: A color correction system and a color correcting method including an image processing device and a display device are provided implement accurate color correcting of the display device corresponding to intension of a user by including a color correction performing part. CONSTITUTION: A first interface part(310) and a second interface part(410) communicate with an external display device. A graphic card part(320) outputs a graphic image and first color patch information. A color correction performing part(330) receives the graphic image and the first color patch information. The color correction performing part produces second color patch information. The color correction performing part transmits the graphic image and the second color patch information to the display device through the interface part. Control parts(340, 440) control the color patch displayed on a display device(400) for controlling the color correction performing part to perform color correction. [Reference numerals] (310) First interface part; (320) Graphic card part; (330) Color correction performing part; (340) First control part; (410) Second interface part; (420) Display part; (430) Sensing part; (440) Second control part;

Description

Color correction system and image correction method including image processing device and display device {COLOR CALIBRATION SYSTEM AND METHOD INCLUDING IMAGE PROCESSING APPARATUS AND DISPLAY APPARATUS}

The present invention relates to a color correction system and a color correction method including an image processing device and a display device.

The display apparatus processes an image signal provided from an input source such as a PC in a displayable form, displays the image signal, and provides an image that can be viewed by a user.

In order to meet the needs of users who want to view more detailed and high quality images, the display apparatus needs to display the input image as an image of a desired color, and in particular, a professional display apparatus, a broadcast display apparatus, and an LFD ( Large Format Display), especially for medical display devices.

In response to the user's needs, the display apparatus may perform color calibration, which means a process of setting output characteristics of the display apparatus to a defined standard or user's setting.

In the color correction of the display device, the display device displays a color reference (hereinafter referred to as a color patch) for color correction, measures the displayed color patch, and measures the color coordinates, color temperature, brightness, Adjust to change by gamma. However, in the case of performing the color correction of the conventional display device, there are many cases in which the user performs color correction to a color that does not match the desired level.

It is an object of the present invention to perform color correction of an accurate display device suitable for a user's intention.

According to the present invention, there is provided an image processing apparatus, comprising: an interface unit communicating with an external display apparatus; A graphic card unit for outputting a graphic image to be displayed on the display device and first color patch information for performing color correction of the display device; Receiving the output graphic image and first color patch information, generating second color patch information based on the first color patch information and stored internal color patch information, and generating the graphic image and the second color patch information. A color correction performing unit transmitting to the display apparatus through the interface unit; And a control unit controlling the color correction performing unit to adjust color patches displayed on the display device to perform color correction.

Here, the first color patch information and the internal color patch information may include information about a color level of a specific color input from a user.

Here, when the first color patch information and the internal color patch information are different, the controller may generate a predetermined warning screen and transmit the generated warning screen to the display device.

Here, when the first color patch information and the internal color patch information are different, the controller may control the color correction performing unit to generate second color patch information having the same color level as the first color patch information. .

Here, the display device generates and displays the color patch in a layer separate from the graphic image, based on the second color patch information, and the color correction performing unit adjusts the color of the color patch to correct the color. Can be done.

The color patch may be displayed on a specific area of the screen of the display device.

And the controller is configured to generate the second color patch information based on a type of an interface between the interface unit and the display apparatus.

In addition, according to the present invention, in the color correction method, generating a graphic image to be displayed on the display device and the first color patch information for performing color correction of the display device; Generating second color patch information for displaying a color patch based on the first color patch information and the stored internal color patch information; And displaying a color patch on the display device based on the second color patch information, and adjusting the displayed color patch to perform color correction.

Here, the first color patch information and the internal color patch information may include information about a color level of a specific color input from a user.

The method may further include checking whether the first color patch information matches the internal color patch information.

Here, when the first color patch information and the internal color patch information is different, the method may further include generating a predetermined warning screen and displaying the same on the display device.

Here, when the first color patch information and the internal color patch information are different, second color patch information having the same color level as the first color patch information may be generated.

Here, the internal color patch information may have a maximum level or minimum level of the specific color.

The second color patch information may be generated based on a type of an interface between the image processing apparatus and the display apparatus.

In addition, the above object is, according to the present invention, in the color correction system, comprising an image processing apparatus and a display apparatus, the image processing apparatus, a graphic image and the first color patch information for performing color correction of the display apparatus A graphics card unit for outputting; Receiving the output graphic image and the first color patch information, and based on the first color patch information and the stored internal color patch information, second color patch information for displaying a color patch in a layer separate from the graphic image. A color correction performing unit generating and transmitting the graphic image and the second color patch information to the display apparatus; And a first control unit controlling the color correction performing unit to perform color correction according to the color correction feedback signal transmitted from the display apparatus. The display device includes a display unit; A detector for detecting a color of the color patch displayed on the display unit; To display the color patch generated on the basis of the second color patch information and the received graphic image on the display unit, and transmit a feedback signal for color correction to the image processing apparatus according to a detection result of the detection unit. It may be achieved by a color correction system, characterized in that it comprises a second control unit for controlling.

Here, the first color patch information and the internal color patch information may include information about a color level of a specific color input from a user.

Here, the first controller checks whether the first color patch information and the internal color patch information match, and generates a predetermined warning screen when the first color patch information and the internal color patch information are different from each other. The display apparatus may be controlled to transmit to the display apparatus or to generate second color patch information having the same color level as the first color patch information.

The first controller may control to generate the second color patch information based on a type of an interface between the image processing apparatus and the display apparatus.

Accordingly, accurate color correction of the display device according to the user's intention can be performed.

1 is a control block diagram of a display apparatus according to a first embodiment of the present invention,
2 is a diagram illustrating an example in which a warning alarm is displayed as a result of comparing patch levels.
3 is a diagram of an example of changing the patch level of the inner patch according to the graphics card patch,
4 is a diagram illustrating a change of a patch level according to a method of connecting a display apparatus and an external input source.
5 is a control flowchart of a color correction method according to a first embodiment of the present invention,
6 is a control block diagram of a color correction system according to a second embodiment of the present invention;
7 and 8 illustrate screens performing color correction.
9 is a control flowchart of a color correction method according to a second embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

First, a first embodiment of the present invention will be described with reference to FIGS. 1 to 5.

1 is a control block diagram of a display apparatus 100 according to the present invention.

As shown, the display apparatus 100 according to the present invention includes an interface unit 110, a display unit 120, a patch storage unit 130, and a controller 140. The display apparatus 100 is a device capable of receiving an image signal from an external input source 200 and displaying the image signal. The display apparatus 100 may be implemented as a monitor, a TV, and the like.

The interface unit 110 transmits and receives data with an external input source 200. The external input source 200 may include a graphic card that converts the generated data into an image signal and transmits it to the display apparatus 100, and may store a predetermined graphic card patch 20 for color correction. . The external input source 200 is preferably implemented by a PC, but a specific implementation is not limited thereto. The interface unit 110 may transmit / receive data from an external input source 200 by a method such as a digital visual interface (DVI), a component, a high-definition multimedia interface (HDMI), a serial digital interface (SDI), or the like. have.

The display 120 displays an image and a color correction process. The display unit 120 may include a display panel for displaying an image and a panel driver for processing an input image signal to display an image on the display panel, but is not limited thereto. The image signal received from the external input source 200 through the interface unit 110 is displayed on the display unit 120 through image processing such as decoding, deinterlacing, scaling, and the like. In response to a user's command, when the controller 140 to be described later performs color correction, the display 120 displays a color correction process including a color patch and a color correction status window.

The patch storage unit 130 stores a predetermined internal patch 10. The display apparatus 100 according to the present invention provides a patch storage unit 130 in the display apparatus 100 to perform accurate color correction, and uses the internal patch 10 stored therein, thereby performing conventional color correction. Problems that occur can be solved. The inner patch 10 is displayed in a specific color, and the display apparatus 100 may perform color correction by sensing a change in the inner patch 10.

The controller 140 performs overall operation control of the display apparatus 100 of the present invention. Although not shown, the controller 140 may include a nonvolatile memory such as a ROM and a flash memory in which the control program and the control program are stored, a volatile memory such as a RAM into which at least a portion of the stored control program is loaded, and a loaded control program. It may include a microprocessor such as a central processing unit (CPU), a micro control unit (MCU), or the like.

The controller 140 controls to perform color correction of the display apparatus 100 by using the internal patch 10 stored in the patch storage unit 130 according to a user's command. According to the internal patch 10, as a result of performing color correction, only the color of the area of the patch where color correction is performed among the screen displayed on the display 120 may change, and thus the color correction state window displayed together with the color patch. The color can be prevented from changing. In addition, even when the resolution of the display panel is different from that of the graphics card, color correction may be performed by accurately matching the size and position of the patch area displayed on the display unit 120.

When the color correction is performed, the controller 140 checks the patch level of the graphic card of the external input source 200 through the interface unit 110. The patch level is a digital level of tristimulus values of the patch. Hereinafter, the tristimulus values are represented by (R, G, B) luminance levels of R, G, and B. Color) as an example.

As an example of the controller 140 confirming the patch level of the graphics card of the external input source 200, the controller 140 is connected to the patch level of the internal patch 10 to the external input source 200 through the interface unit 110. By transmitting a control signal for outputting the patch levels of the graphics cards having the same patch level, the patch levels of the graphics cards can be confirmed.

For example, when the patch level of the inner patch 10 is (255,0,0), that is, the luminance level of R is 255, the control unit 140 transmits (255,0,0) to the external input source 200. A control command for outputting a graphic patch having a patch level of) may be transmitted, and the patch level of the graphic card transmitted from the external input source 200 may be checked correspondingly.

The controller 140 compares the patch level of the graphic patch 20 of the external input source 200 with the patch level of the internal patch 10 displayed on the display 120, and if not, the patch of the internal patch 10. Change the level to the patch level of the graphics card to perform color correction. As shown in FIG. 2, if the patch level of the graphics card is equal to the control command of the controller 140 (255,0,0), color correction may be performed without changing the internal patch 10. Since a range of patch levels that can be output is different, a value other than (255, 0, 0) may be output unlike a control command. If the patch level of the graphics card is different from the patch level of the inner patch 10 with (250,0,0), since the correct color correction is not performed, the patch level of the inner patch 10 is set to (250,0,0). Change to 0) to perform color correction.

The display apparatus 100 according to the present invention may further include a detector 150 that detects a patch level of the inner patch 10 displayed on the display 120. The detector 150 serves as a sensor capable of accurately detecting the displayed color, and transmits the detected patch level of the inner patch 10 to the controller 140.

In addition, as shown in FIG. 3, if the patch levels of the graphic card patch 20 and the inner patch 10 are not the same, the controller 140 sends a predetermined warning alarm 30 to the display unit 120. You can control the display. As mentioned above, if the patch levels of the graphics card patch 20 and the inner patch 10 are not the same, accurate color correction may not be made, so by displaying the warning alarm 30, the user sets the graphics card. Alternatively, the state of the connection cable between the external input source 200 and the interface unit 110 may be checked. The warning alarm 30 may be during the color correction process or after the type of color correction.

The interface unit 110 may be connected to the external input source 200 by various methods such as a digital visual interface (DVI), a component, a high-definition multimedia interface (HDMI), and a serial digital interface (SDI). Therefore, the range of the output level to be transmitted may vary depending on the connection method with the input source. As shown in FIG. 4, when the interface unit 110 and the external input source 200 are connected through the SDI 40, the range of the output level to be transmitted may be limited to 16 to 235. In this case, the internal patch Even if the patch level of (10) is (255, 0, 0), the patch level of the graphics card cannot be transmitted as (255, 0, 0), and is within (235, 16, 16) of the maximum output level of the SDI 40. ) May be sent. At this time, the controller 140 may change the patch level of the internal patch 10 to (235, 16, 16) in response to the information about the connection between the interface unit 110 and the external input source 200. .

The display apparatus 100 may further include a user setting unit 160 that allows a user to set information regarding the type of the external input source 200 and the connection with the external input source 200. Since the range of data that can be transmitted may be limited according to the type of the input source or the connection method between the input source and the interface unit 110, the user may store information on the user setting unit 160. The controller 140 may change the patch level of the internal patch 10 in consideration of the limited data range according to the user's setting through the user setting unit 160. As a result, even when a patch level such as the inner patch 10 cannot be input from the input source, color correction can be performed to a target value.

5 is a diagram illustrating a color correction flowchart of the display apparatus 100 according to the present invention.

The display apparatus 100 according to the present invention displays the process of color correction (S110). During color correction, a color patch and a color correction status window may be displayed. A predetermined internal patch is stored in the display apparatus 100, and color correction is performed according to the stored internal patch (S120). The inner patch may be displayed in a specific color, and the display apparatus 100 may perform color correction by detecting a change in the inner patch. As a result of performing color correction according to the internal patch, only the color of the patch area where color correction is performed among the screens displayed in the color correction process can be changed, so that the color correction status window displayed with the color patch is prevented from changing. Can be. In addition, even when the resolution of the display panel is different from that of the graphics card, color correction may be performed by accurately matching the size and position of the displayed patch area.

The display apparatus 100 checks the patch level of the graphics card patch of the external input source 200 (S130). As an example of checking the patch level of the graphics card of the external input source 200, a control signal of a content for outputting the patch level of the graphics card having the same patch level as the patch level of the internal patch is output to the external input source 200. By sending, you can check the patch level of the graphics card.

The display apparatus 100 compares the patch level of the checked graphic card with the patch level of the displayed internal patch (S140). At this time, the display apparatus 100 may detect the patch level of the internal patch and compare it with the patch level of the graphics card.

If the display device 100 does not have the same patch level as the inner patch and the graphic card patch, the display apparatus 100 changes the patch level of the inner patch to the patch level of the graphic card patch (S150). Changing the patch level has been described above with reference to FIG. 2.

In this case, the display apparatus 100 may display a predetermined warning alarm when the patch level of the graphic card patch and the internal patch are not the same. If the patch level of the graphic card patch and the internal patch are not the same, accurate color correction may not be performed. Thus, by displaying a warning alarm, the user sets the graphic card or between the external input source 200 and the display device 100. You can check the status of the connecting cable. The warning alarm can be during the color calibration process or after the color calibration type.

The display apparatus 100 may be connected to an external input source 200 by various methods such as a digital visual interface (DVI), a component, a high-definition multimedia interface (HDMI), and a serial digital interface (SDI). Depending on the connection with the source, the range of the output level to be transmitted may vary. Therefore, the display apparatus 100 may change the patch level of the internal patch in response to the information about the connection with the external input source 200. This is the same as described with reference to FIG. 4.

The user may set information on the type of the external input source 200 and the connection with the external input source 200. Since the range of data that can be transmitted may be limited according to the type of the input source or the method of connecting the input source to the display device, the user may store information on the display device 100. The display apparatus 100 may change the patch level of the internal patch in consideration of the limited data range according to the user's setting. As a result, even when a patch level such as an internal patch cannot be input from the input source, color correction can be performed to a target value.

Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. 6 to 9.

6 is a control block diagram of a color correction system according to a second embodiment of the present invention.

As shown, the color correction system includes an image processing apparatus 300 for receiving or generating and transmitting an image signal from the outside, and a display apparatus 400 for displaying an image received from the image processing apparatus 300.

As illustrated, the image processing apparatus 300 includes a first interface unit 310, a graphics card unit 320, a color correction performing unit 330, and a first control unit 340. It can be implemented as a PC capable of running / W.

The first interface 310 exchanges data with the display apparatus 400 according to well-known interface standards such as DVI, Component, High-Definition Multimedia Interface (HDMI), and Serial Digital Interface (SDI). Send and receive Data transmitted and received may include an image signal and a color correction feedback signal according to the detection of the detection unit 430 which will be described later.

The graphics card unit 320 may be implemented as a known graphics card that serves to control the generation of graphics of the image processing apparatus 300. When the color correction function is executed, the graphic card unit 320 outputs the first color patch information for performing color correction of the display apparatus 400 together with the graphic image to the color correction performing unit 330 which will be described later. For color correction, a process of displaying a specific color patch on the screen of the target display apparatus 400 and correcting the displayed color patch to a desired color level is required. In this case, the color patch is displayed on a predetermined area of the screen at a specific color level, and may have a maximum level or a minimum level of a specific color. That is, color correction is generally performed through a color patch having a color having a level of 0 or 255 for each of R, G, and B based on 256 colors.

The first color patch information includes information on the color level of the color patch to be displayed on the screen, the user may input a specific level through the color correction S / W, color correction performing unit 330 when performing color correction The value may be preset to be output as.

The color correction performing unit 330 may be implemented as a separate H / W, that is, a CM IC (Color Management Integrated Circuit) that is responsible for the overall color correction. The color correction unit 330 receives the graphic image and the first color patch information output from the graphic card unit 320 and generates the second color patch information based on the first color patch information and the stored internal color patch information. do. The second color patch information, like the first color patch information, includes information about the color level of the color patch to be displayed on the screen of the display apparatus 400. The color correction performing unit 330 generates the second color patch information as a separate layer from the graphic image and transmits the second color patch information to the display apparatus 400 through the first interface 310.

The display apparatus 400 displays a color patch based on the received second color patch information, transmits a color correction control signal to the color correction performing unit 330 to change the color patch to a target value, and performs color correction. The unit 330 repeatedly transmits the RGB gain value changed for the same color level to the display apparatus 400 until the color patch reaches the target value.

When the color correction is performed, a process of color correction is shown on the display unit 420 of the display apparatus 400, and since the time for performing color correction is not shorter, at least 30 seconds or more, as shown in FIG. 7. It is common to display a progress window 520 to show the progress of. In the conventional display apparatus, the color patch is displayed by the color patch information generated by the graphic card (510), and the color patch is adjusted by transmitting the color correction control signal according to the detected value of the color patch. In addition to the area where the color patch was displayed, there was a problem that the color of the remaining part including the progress window 520 was also changed. In the present invention, as a result of generating a graphic image including the color patch and the progress window as a separate layer, and adjusting only the region 510 of the color patch of the displayed image by the color correction performing unit 330, the progress window ( Color correction may be performed while maintaining the color of the graphic image, including 520.

In addition, the sensing unit 430 of the display apparatus 400 to be described later detects only a change in the color patch area displayed on the display unit 420. In the case of the conventional display apparatus 400, an image on which color correction is performed may be displayed. As a result of scaling, a case where the area 610 detected by the detection unit 430 and the area 620 in which the actual color patch is displayed may not exactly match. For example, if the resolution of the image generated by the graphics card is 1024 * 768 and the resolution of the display panel is 1920 * 1200, the scaler of the display apparatus 400 may adjust the image of 1024 * 768 to match the resolution of the display panel. In this case, the area 610 detected by the detection unit 430 and the area 620 where the color patch is displayed may not match, depending on the difference in resolution. Accurate color correction may not be performed. Since the color correction system according to the present invention generates the color patch as a separate layer and transmits the color patch to be displayed on a specific area of the display panel, the color patch displays the color patch on the target specific area within the screen of the display device 420. Color correction can be performed.

The first control unit 340 controls the overall configuration of the image processing apparatus 300 by executing color correction S / W when performing color correction. The first controller 340 may be implemented as a microprocessor such as a central processing unit (CPU).

In the present invention, the first color patch information and the internal color patch information include information about a color level of a specific color, which may be a value input by a user through executed color correction S / W, and indicates a maximum level of a specific color. Typing to display is common. For example, if a user inputs color correction through full red, i.e., 256 color patches with R, G, B levels of (255, 0, 0), the control unit may The value is transmitted to the graphic card unit 320 and the color correction unit 330 to control to generate the first color patch information and the internal color patch information, respectively. When the first color patch information is transmitted from the graphic card unit 320, the color correction unit 330 checks whether the first color patch information matches the stored internal color patch information. Since the first color patch information and the internal color patch information are generated based on a value input by the user, the first color patch information and the internal color patch information are normal. However, the first color patch information and the internal color patch information are identical. This may result in the inability to perform accurate color correction.

In order to prevent such a problem, if the first color patch information and the internal color patch information are different from each other as a result of the comparison, the controller generates a predetermined warning screen and transmits the predetermined warning screen to the display apparatus 400, and the display apparatus 400 displays the warning screen. The indication can inform the user whether there is an error. Alternatively, the controller may control the color correction performing unit 330 to generate second color patch information having the same color level by matching the first color patch information when generating the second color patch information.

The first controller 340 generates the second color patch information based on the type of interface between the first interface 310 of the image processing apparatus 300 and the second interface 410 of the display apparatus 400. Can be controlled. As described above, various interfaces such as DVI, Component, High-Definition Multimedia Interface (SDI), and Serial Digital Interface (SDI) can be used, and outputs can be transmitted depending on the type of interface used. The range of levels may vary. For example, when the interface unit and an external input source are connected through SDI, the range of the output level to be transmitted may be limited to 16 to 235, and the color correction unit 330 may be formed of (255, 0, 0). Even if the two-color patch information is output, it can only be transmitted to (235, 16, 16) within the maximum output level of the SDI. In this case, since accurate color correction may not be performed, the controller may generate second color patch information of (235, 16, 16) based on the type of interface and transmit the generated second color patch information to the display apparatus 400. At this time, the information about the type of the interface to be connected can be recognized according to the user's input through the color correction S / W.

As shown in FIG. 6, the display apparatus 400 includes a second interface unit 410, a display unit 420, a detector 430, and a second controller 440.

The second interface unit 410 transmits and receives data to and from the first interface unit 310 of the image processing apparatus 300 according to a predetermined interface standard.

The display unit 420 displays various images, and displays color patches generated based on graphic images and color patch information transmitted from the image processing apparatus 300 when performing color correction.

The detector 430 detects the color of the color patch displayed on the display 420. The purpose of color correction is to make a color displayed through the actual display unit 420 equal to a target value for a specific color level inputted by the user. As described above, the color of the color patch displayed through the detection unit 430 which is separate hardware may be detected.

The second controller 440 may be implemented as a CPU that is in charge of overall control of each component of the display apparatus 400. The second controller 440 generates a color patch based on the second color patch information received when performing color correction, and controls the display unit to display the received color image on the display unit 420. When the color patch is displayed on the display unit 420, the detector 430 detects the displayed color patch, and the second controller 440 checks whether the target color matches the color of the actually displayed color patch and compensates for the difference. In order to control the color correction control signal to the image processing apparatus 300. As described above, the image processing apparatus 300 transmits the changed RGB gain value to the display apparatus 400 based on the received color correction control signal, and the displayed color patch is changed, and the color patch is applied to the target color. This process is repeated repeatedly until it is reached.

9 is a control flowchart of a color correction method according to a second embodiment of the present invention.

The color correction method is performed through the image processing apparatus 300 and the display apparatus 400, and the image processing apparatus 300 may be implemented as a PC and the display apparatus 400 as a TV or a monitor.

When color correction is performed, the image processing apparatus 300 generates a graphic image and first color patch information (S210). The graphic image and the first color patch information are generated by the graphic card of the image processing apparatus 300 and transmitted to the color correction performing unit implemented by a CM IC (Color Management Integrated Circuit). For color correction, a process of displaying a color patch having a specific color on the screen of the display apparatus 400 and correcting the displayed color patch to a desired color level is required. The color patch information includes information about a color level of a specific color, and may be a value input by a user through color correction S / W.

The color correction unit generates second color patch information for displaying color patches on the display apparatus 400 in a layer separate from the received graphic image based on the received first color patch information and the stored internal color patch information. This is transmitted to the display device 400 (S230).

The display apparatus 400 displays a color patch based on the received second color patch information, and performs color correction by adjusting the displayed color patch (S240). When the color patch is displayed on the display apparatus 400, the color of the displayed color patch is detected, and the color correction control signal is transmitted to the image processing apparatus 300 to compensate for the difference by comparing with the target value. The image processing apparatus 300 transmits the changed RGB gain value to the display apparatus 400 based on the received color correction signal, and the displayed color patch is changed accordingly, until the color patch reaches the target color. As a result of repeatedly performing color correction.

According to this embodiment described above, as a result of using a separate color correction unit in addition to the graphics card and generating a color patch image in a layer separate from the graphic image, the color of the graphic image including the progress window is maintained as it is. Color correction may be performed by changing only the color of the color patch, and as a result of the scaling, the area detected by the sensing unit of the display device and the area where the actual color patch is displayed do not exactly match.

The color correction method according to the present embodiment may further include checking whether the first color patch information and the internal color patch information match (S220). Since the first color patch information and the internal color patch information are generated based on a value input by the user, the first color patch information and the internal color patch information are matched normally. This may result in the inability to perform accurate color correction. Accordingly, when the first color patch information and the internal color patch information are different, a predetermined warning screen may be generated and displayed on the display apparatus 400 (S240). In addition, color correction may be performed by generating second color patch information having the same color level as the first color patch information and displaying the color patch according to the color patch (S250).

The image processing apparatus 300 and the display apparatus 400 may be connected through various interfaces, and based on the type of the interface between the image processing apparatus 300 and the display apparatus 400 when generating the second color patch information. Color patch information may be generated. At this time, the information about the type of the interface to be connected can be recognized according to the user's input through the color correction S / W.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, . Therefore, it should be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: display device
110:
120:
130: patch storage unit
140:
150: detector
160: user setting unit
200: external input source

Claims (18)

An image processing apparatus comprising:
An interface unit communicating with an external display device;
A graphic card unit for outputting a graphic image to be displayed on the display device and first color patch information for performing color correction of the display device;
Receiving the output graphic image and first color patch information, generating second color patch information based on the first color patch information and stored internal color patch information, and generating the graphic image and the second color patch information. A color correction performing unit transmitting to the display apparatus through the interface unit; And
And a controller for controlling the color correction performing unit to adjust color patches displayed on the display device to perform color correction. The method of claim 1,
And the first color patch information and the internal color patch information include information about a color level of a specific color input from a user. The method of claim 1,
And if the first color patch information and the internal color patch information are different, the controller generates a predetermined warning screen and transmits the predetermined warning screen to the display apparatus. The method of claim 1,
The control unit controls the color correction performing unit to generate second color patch information having the same color level as the first color patch information when the first color patch information and the internal color patch information are different from each other. Image processing device. The method of claim 1,
The display apparatus generates and displays the color patch in a layer separate from the graphic image, based on the second color patch information.
The color correction performing unit performs color correction by adjusting only the color of the color patch. 6. The method of claim 5,
And the color patch is displayed on a specific area of a screen of the display device. The method of claim 1,
And the controller is configured to generate the second color patch information based on a type of an interface between the interface unit and the display apparatus. In the color correction method,
Generating a graphic image to be displayed on a display device and first color patch information for performing color correction of the display device;
Generating second color patch information for displaying a color patch based on the first color patch information and the stored internal color patch information;
Displaying a color patch on the display device based on the second color patch information, and adjusting the displayed color patch to perform color correction. The method of claim 8,
And the first color patch information and the internal color patch information include information about a color level of a specific color input from a user. The method of claim 9,
And confirming whether or not the first color patch information and the internal color patch information match each other. The method of claim 10,
And generating a predetermined warning screen on the display device when the first color patch information and the internal color patch information are different from each other. The method of claim 10,
And when the first color patch information and the internal color patch information are different, generating second color patch information having the same color level as the first color patch information. The method of claim 9,
And the internal color patch information has a maximum level or a minimum level of the specific color. The method of claim 8,
And generating the second color patch information based on a type of an interface between the image processing apparatus and the display apparatus. In the color correction system,
Including an image processing apparatus and a display apparatus,
The image processing apparatus comprising:
A graphic card unit configured to output a graphic image and first color patch information for performing color correction of the display apparatus;
Receiving the output graphic image and the first color patch information, and based on the first color patch information and the stored internal color patch information, second color patch information for displaying a color patch in a layer separate from the graphic image. A color correction performing unit generating and transmitting the graphic image and the second color patch information to the display apparatus; And
A first control unit which controls the color correction performing unit to perform color correction according to the color correction feedback signal transmitted from the display apparatus;
The display device,
A display unit;
A detector for detecting a color of the color patch displayed on the display unit;
To display the color patch generated on the basis of the second color patch information and the received graphic image on the display unit, and transmit a feedback signal for color correction to the image processing apparatus according to a detection result of the detection unit. And a second control unit for controlling the color correction system. 16. The method of claim 15,
And the first color patch information and the internal color patch information include information about a color level of a specific color input from a user. 17. The method of claim 16,
The first controller determines whether the first color patch information and the internal color patch information match, and generates a predetermined warning screen when the first color patch information and the internal color patch information are different from each other. Or to generate second color patch information having the same color level as the first color patch information. 16. The method of claim 15,
And the first controller controls to generate the second color patch information based on a type of an interface between the image processing apparatus and the display apparatus.

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