CN116801112A

CN116801112A - Color calibration method, device, storage medium and display equipment

Info

Publication number: CN116801112A
Application number: CN202210248039.XA
Authority: CN
Inventors: 周明尧
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2023-09-22

Abstract

The present disclosure relates to a color calibration method, apparatus, storage medium, and display device, the method being applied to the display device, including: acquiring a plurality of preset RGB data; for each preset RGB data, determining a display error when the display device displays the preset RGB data, determining calibration data corresponding to the preset RGB data according to the display error and the preset RGB data, and determining target calibration data of the calibration data in a target color gamut; generating a color calibration file corresponding to the display device according to a plurality of preset RGB data and a plurality of target calibration data; and calibrating the color displayed by the display device according to the color calibration file. That is, based on different target color gamuts, different target calibration data can be determined, so that the accuracy of a color calibration file generated according to the target calibration data is higher, and thus, after the color of the display device is calibrated according to the color calibration file, the accuracy of color display of the display device is improved.

Description

Color calibration method, device, storage medium and display equipment

Technical Field

The disclosure relates to the technical field of display, and in particular relates to a color calibration method, a device, a storage medium and display equipment.

Background

With the development of display technology, display devices are widely used in daily life, such as mobile phone screens, computer displays, smart watches, and the like, and different display devices are affected by panel designs, device structures, and the like and have different color gamut display ranges. In order to achieve the same display effect of different display devices, in addition to unifying the color gamuts of the display devices, color calibration of the display devices is required in consideration of the influence of the hardware conditions of the display devices themselves. Therefore, how to calibrate the color of the display device is a problem to be solved.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides a color calibration method, apparatus, storage medium, and display device.

According to a first aspect of embodiments of the present disclosure, there is provided a color calibration method applied to a display device, the method including:

acquiring a plurality of preset RGB data;

for each preset RGB data, determining a display error when the display device displays the preset RGB data, determining calibration data corresponding to the preset RGB data according to the display error and the preset RGB data, and determining target calibration data of the calibration data in a target color gamut;

generating a color calibration file corresponding to the display device according to the preset RGB data and the target calibration data;

and calibrating the color displayed by the display device according to the color calibration file.

Optionally, the determining a display error when the display device displays the preset RGB data includes:

collecting tristimulus values corresponding to the preset RGB data under the condition that the display equipment displays images according to the preset RGB data;

determining RGB tristimulus values of the tristimulus values in an RGB color space;

and determining a display error when the display device displays the preset RGB data according to the preset RGB data and the RGB tristimulus values.

Optionally, before determining a display error when the display device displays the preset RGB data according to the preset RGB data and the RGB tristimulus values, the method further includes:

nonlinear processing is carried out on the preset RGB data to obtain nonlinear RGB data corresponding to the preset RGB data;

the determining, according to the preset RGB data and the RGB tristimulus values, a display error when the display device displays the preset RGB data includes:

and taking the difference value between the RGB tristimulus values and the nonlinear RGB data as the display error.

Optionally, the determining, according to the display error and the preset RGB data, calibration data corresponding to the preset RGB data includes:

and taking the difference value of the nonlinear RGB data and the display error as calibration data corresponding to the preset RGB data.

Optionally, the determining the target calibration data of the calibration data in the target color gamut includes:

determining a conversion matrix for converting the target color gamut into a native color gamut corresponding to the display device;

and taking the product of the calibration data and the conversion matrix as the target calibration data.

Optionally, before the generating the color calibration file corresponding to the display device according to the plurality of preset RGB data and the plurality of target calibration data, the method further includes:

performing linear processing on the target calibration data aiming at each piece of target calibration data to obtain target linear calibration data corresponding to the target calibration data;

the generating the color calibration file corresponding to the display device according to the preset RGB data and the target calibration data includes:

and generating a color calibration file corresponding to the display equipment according to the preset RGB data and the target linear calibration data.

Optionally, the plurality of preset RGB data are initial RGB data in a preset color lookup table.

According to a second aspect of embodiments of the present disclosure, there is provided a color calibration apparatus applied to a display device, the apparatus comprising:

a preset RGB data acquiring module configured to acquire a plurality of preset RGB data;

a target calibration data determining module configured to determine, for each of the preset RGB data, a display error when the display device displays the preset RGB data, determine calibration data corresponding to the preset RGB data according to the display error and the preset RGB data, and determine target calibration data of the calibration data in a target color gamut;

the color calibration file generation module is configured to generate a color calibration file corresponding to the display device according to a plurality of preset RGB data and a plurality of target calibration data;

and the color calibration module is configured to calibrate the color displayed by the display device according to the color calibration file.

Optionally, the target calibration data determination module is further configured to:

Optionally, the apparatus further comprises:

the nonlinear processing module is configured to perform nonlinear processing on the preset RGB data to obtain nonlinear RGB data corresponding to the preset RGB data;

the target calibration data determination module is further configured to:

Optionally, the apparatus further comprises:

the linear processing module is configured to perform linear processing on the target calibration data aiming at each piece of target calibration data to obtain target linear calibration data corresponding to the target calibration data;

the color calibration file generation module is further configured to:

According to a third aspect of embodiments of the present disclosure, there is provided a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the color calibration method provided by the first aspect of the present disclosure.

According to a fourth aspect of embodiments of the present disclosure, there is provided a display apparatus including:

a memory having a computer program stored thereon;

a processor for executing the computer program in the memory to implement the steps of the color calibration method provided in the first aspect of the present disclosure.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: acquiring a plurality of preset RGB data; for each preset RGB data, determining a display error when the display device displays the preset RGB data, determining calibration data corresponding to the preset RGB data according to the display error and the preset RGB data, and determining target calibration data of the calibration data in a target color gamut; generating a color calibration file corresponding to the display device according to the preset RGB data and the target calibration data; and calibrating the color displayed by the display device according to the color calibration file. That is, the present disclosure determines calibration data according to a display error of a display device, determines target calibration data of the calibration data in a target color gamut, and may determine different target calibration data based on different target color gamuts, so that an accuracy of a color calibration file generated according to the target calibration data is also higher, and thus, after calibrating a color of the display device according to the color calibration file, an accuracy of color display of the display device is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a flow chart illustrating a color calibration method according to an exemplary embodiment of the present disclosure;

FIG. 2 is a flow chart illustrating another color calibration method according to an exemplary embodiment of the present disclosure;

FIG. 3 is a block diagram of a color calibration device according to an exemplary embodiment of the present disclosure;

FIG. 4 is a block diagram of a second color calibration device according to an exemplary embodiment of the present disclosure;

FIG. 5 is a block diagram of a third color calibration device according to an exemplary embodiment of the present disclosure;

fig. 6 is a block diagram of a display device according to an exemplary embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

It should be noted that, all actions of acquiring signals, information or data in the present application are performed under the condition of conforming to the corresponding data protection rule policy of the country of the location and obtaining the authorization given by the owner of the corresponding device.

Before describing the specific embodiments of the present disclosure in detail, an application scenario of the present disclosure will be described first. Currently, color gamut standards for displays include a plurality of, for example: sRGB, adobe RGB, DCI-P3, NTSC, etc. sRGB is widely used in displays, printers and the internet, is currently the most commonly used color gamut standard, adobe RGB is a commonly used standard for professional color imaging and publishing, DCI-P3 is widely used in the fields of television systems and home theatres, and NTSC is a color gamut made by the national television standards committee. Although the color gamut standard can unify the color gamuts of the display devices, the display devices still have color display errors when the same image is displayed on different display devices due to hardware loss or hardware difference caused by hardware instability. In the related art, in order to improve the consistency of the display device, the color of the display device needs to be calibrated, and based on this, how to calibrate the color of the display device is a problem to be solved.

In order to overcome the technical problems in the related art, the present disclosure provides a color calibration method, a device, a storage medium and a display device, which determine calibration data according to a display error of the display device, determine target calibration data of the calibration data in a target color gamut, and determine different target calibration data based on different target color gamuts, so that an accuracy of a color calibration file generated according to the target calibration data is higher, and thus, after calibrating a color of the display device according to the color calibration file, an accuracy of color display of the display device is improved.

The present disclosure is described below in connection with specific embodiments.

Fig. 1 is a flowchart illustrating a color calibration method according to an exemplary embodiment of the present disclosure, which is applied to a display device, which may include a mobile device, such as a smart phone, a smart wearable device, a smart tablet, a personal computer, etc., as illustrated in fig. 1, and which may include:

s101, acquiring a plurality of preset RGB data.

The plurality of preset RGB data may be initial RGB data in a preset color lookup Table, which may be input data of a 3D LUT (Look Up Table), for example.

Note that, the plurality of preset RGB data may be all input data of the 3D LUT, or may be some data to be calibrated in the input data of the 3D LUT, which is not limited in this disclosure.

S102, for each preset RGB data, determining a display error when the display device displays the preset RGB data, determining calibration data corresponding to the preset RGB data according to the display error and the preset RGB data, and determining target calibration data of the calibration data in a target color gamut.

In the step, after a plurality of preset RGB data are acquired, for each preset RGB data, an image corresponding to the preset RGB data can be displayed through the display device, and under the condition that the display device displays the image according to the preset RGB data, tristimulus values corresponding to the preset RGB data are acquired; determining RGB tristimulus values of the tristimulus values in an RGB color space; and determining a display error of the display device when the display device displays the preset RGB data according to the preset RGB data and the RGB tristimulus values. And finally, a conversion matrix for converting the target color gamut into the original color gamut corresponding to the display device can be obtained, and the target calibration data is determined according to the conversion matrix and the calibration data.

S103, generating a color calibration file corresponding to the display device according to a plurality of preset RGB data and a plurality of target calibration data.

In this step, after determining the target calibration data corresponding to each preset RGB data, an association relationship between a plurality of preset RGB data and a plurality of target calibration data may be established, so as to obtain a color calibration file corresponding to the display device. For example, if the color calibration file is a 3D LUT, a plurality of preset RGB data may be used as input data of the 3D LUT, and a plurality of target calibration data may be used as output data of the 3D LUT.

S104, calibrating the color displayed by the display device according to the color calibration file.

In this step, after the color calibration file corresponding to the display device is generated, the color of the display device may be calibrated according to the color calibration file. For example, if the color calibration file is a 3D LUT, after inputting the input data of the 3D LUT to the display device, the display device displays according to the output data corresponding to the input data in the 3D LUT.

By adopting the method, the calibration data is determined according to the display error of the display device, the target calibration data of the calibration data in the target color gamut is determined, and different target calibration data can be determined based on different target color gamuts, so that the accuracy of the color calibration file generated according to the target calibration data is higher, and the accuracy of the color display of the display device is improved after the color of the display device is calibrated according to the color calibration file.

FIG. 2 is a flow chart of another color calibration method, as shown in FIG. 2, according to an exemplary embodiment of the present disclosure, which may include:

s201, acquiring a plurality of preset RGB data.

The plurality of preset RGB data may be initial RGB data in a preset color lookup table, which may be a 3D LUT, for example, and the initial RGB data may be input data of the 3D LUT. If the 3D LUT includes 17 x 17 segments, each node corresponds to a predetermined RGB data, the number of preset RGB data is 17 x 17.

After a plurality of preset RGB data are acquired, steps S202 to S208 are performed for each preset RGB data.

S202, under the condition that the display equipment displays an image according to the preset RGB data, collecting tristimulus values corresponding to the preset RGB data.

In this step, the image corresponding to the preset RGB data may be displayed by the display device, the tristimulus values X, Y, Z of the center point of the display device are collected, taking the 3D LUT in step S201 as an example, for each 3D LUT node, tristimulus values of the display device when displaying preset RGB data corresponding to the 3D LUT node can be collected, finally, 17 x 17 tristimulus values are obtained.

S203, determining RGB tristimulus values of the tristimulus values in an RGB color space.

In this step, after the tristimulus values corresponding to the preset RGB data are collected, a first solid-color tristimulus value when the display device displays a white image, a red image, a green image and a blue image respectively may be collected, a first conversion matrix from an XYZ color space to an RGB color space is determined according to the first solid-color tristimulus value by a related-art method, and then a product of the tristimulus value and the first conversion matrix may be calculated, and the product may be used as an RGB tristimulus value of the tristimulus value in the RGB color space.

It should be noted that, the present disclosure may also determine the first conversion matrix from the XYZ color space to the RGB color space in advance, and may directly obtain the first conversion matrix after collecting the tristimulus values corresponding to the preset RGB data, which is not limited in the present disclosure.

S204, performing nonlinear processing on the preset RGB data to obtain nonlinear RGB data corresponding to the preset RGB data.

In this step, considering that the tristimulus values collected from the display device are nonlinear data, that is, the relationship between the brightness and gray level of the tristimulus values is nonlinear, and the plurality of preset RGB data are linear, taking the input data of the preset RGB data as a 3D LUT as an example, since the nodes of the 3D LUT are uniformly distributed, the plurality of preset RGB data are also uniformly distributed.

In order to facilitate the processing of the preset RGB data and the tristimulus values in the same space, the preset RGB data may be subjected to nonlinear processing, for example, gamma conversion may be performed on the preset RGB data by a related art method, so as to obtain nonlinear RGB data corresponding to the preset RGB data.

S205, taking the difference between the RGB tristimulus values and the nonlinear RGB data as a display error.

In this step, the preset RGB data may be used as ideal RGB data, the RGB tristimulus values are RGB data actually displayed by the display device, and after the nonlinear RGB data corresponding to the preset RGB data is obtained, a difference between the nonlinear RGB data and the RGB tristimulus values may be calculated, where the difference is a display error when the display device displays the preset RGB data. Illustratively, the display error may be calculated by the following formula:

Δ＝RGB _{tristimulus value} -RGB _{Nonlinear characteristics} (1)

Wherein delta is the display error, RGB _{Nonlinear characteristics} For the nonlinear RGB data, RGB _{Tristimulus value} Is the RGB tristimulus value.

S206, taking the sum value of the nonlinear RGB data and the display error as calibration data corresponding to the preset RGB data.

In this step, after determining a display error when the display device displays the preset RGB data, a difference between the preset RGB data and the display error may be calculated, and the difference may be used as calibration data corresponding to the preset RGB data. Illustratively, this calibration data may be calculated by the following formula:

RGB _{calibration data} ＝RGB _{Nonlinear characteristics} -Δ (2)

Wherein RGB _{Calibration data} And the calibration data corresponding to the preset RGB data.

After combining the formula (2) with the formula (1), the formula (3) can be obtained:

RGB _{calibration data} ＝RGB _{Nonlinear characteristics} -(RGB _{Tristimulus value} -RGB _{Nonlinear characteristics} ) (3)

＝2RGB _{Nonlinear characteristics} -RGB _{Tristimulus value}

S207, determining a conversion matrix for converting the target color gamut into the original color gamut corresponding to the display device.

The target color gamut may be a preset color gamut that the display device is expected to be capable of displaying, which is not limited by the present disclosure.

In this step, a second solid-color tristimulus value corresponding to the white image, the red image, the green image and the blue image in the target color gamut may be obtained first, a second conversion matrix from the RGB color space to the XYZ color space under the target color gamut may be determined according to the second solid-color tristimulus value by a related-art method, then a third conversion matrix from the XYZ color space to the RGB color space under the native color gamut corresponding to the display device may be determined according to the first solid-color tristimulus value by a related-art method, and finally, a product of the second conversion matrix and the third conversion matrix may be used as a conversion matrix for converting the target color gamut to the native color gamut corresponding to the display device.

It should be noted that, a conversion matrix for converting the target color gamut into the native color gamut corresponding to the display device may also be predetermined, where the conversion matrix may be directly obtained.

S208, taking the product of the calibration data and the conversion matrix as the target calibration data.

Through the above steps S202 to S208, target calibration data corresponding to each preset RGB data can be obtained.

S209, performing linear processing on the target calibration data aiming at each target calibration data to obtain target linear calibration data corresponding to the target calibration data.

In this step, the target calibration data obtained by performing the nonlinear processing on the preset RGB data in step S204 is also nonlinear, and based on this, linear processing may be performed on each target calibration data to obtain target linear calibration data corresponding to the target calibration data. For example, in the case of performing gamma transformation on the preset RGB data in step S204, inverse gamma transformation may be performed on the target calibration data to obtain target linear calibration data corresponding to the target calibration data.

S210, generating a color calibration file corresponding to the display device according to a plurality of preset RGB data and a plurality of target linear calibration data.

In this step, an association relationship between a plurality of preset RGB data and a plurality of target calibration data may be established, so as to obtain a color calibration file corresponding to the display device. For example, if the color calibration file is a 3D LUT, a plurality of preset RGB data may be used as input data of the 3D LUT, and a plurality of target calibration data may be used as output data of the 3D LUT.

S211, calibrating the color displayed by the display device according to the color calibration file.

By adopting the method, the calibration data is determined according to the display error of the display device, the target calibration data of the calibration data in the target color gamut is determined, and different target calibration data can be determined based on different target color gamuts, so that the accuracy of the color calibration file generated according to the target calibration data is higher, and the accuracy of the color display of the display device is improved after the color of the display device is calibrated according to the color calibration file. In addition, since the obtained tristimulus values of the display device are nonlinear data, the calibration data determined based on the tristimulus values can further improve the accuracy of the color calibration of the low gray scale region, and the target color gamut can be any color gamut set by a user, thereby improving the portability of the method.

Fig. 3 is a block diagram of a color calibration apparatus according to an exemplary embodiment of the present disclosure, which is applied to a display device, as shown in fig. 3, and may include:

a preset RGB data acquiring module 301 configured to acquire a plurality of preset RGB data;

a target calibration data determining module 302 configured to determine, for each of the preset RGB data, a display error when the display device displays the preset RGB data, determine calibration data corresponding to the preset RGB data according to the display error and the preset RGB data, and determine target calibration data of the calibration data in a target color gamut;

a color calibration file generating module 303 configured to generate a color calibration file corresponding to the display device according to a plurality of the preset RGB data and a plurality of the target calibration data;

a color calibration module 304 is configured to calibrate the color displayed by the display device according to the color calibration file.

Optionally, the target calibration data determination module 302 is further configured to:

under the condition that the display equipment displays an image according to the preset RGB data, collecting tristimulus values corresponding to the preset RGB data;

and determining a display error of the display device when the display device displays the preset RGB data according to the preset RGB data and the RGB tristimulus values.

Optionally, fig. 4 is a block diagram of a second color calibration device according to an exemplary embodiment of the present disclosure, as shown in fig. 4, the device further comprising:

a nonlinear processing module 305 configured to perform nonlinear processing on the preset RGB data to obtain nonlinear RGB data corresponding to the preset RGB data;

the target calibration data determination module 302 is further configured to:

and taking the difference between the RGB tristimulus values and the nonlinear RGB data as the display error.

the product of the calibration data and the conversion matrix is used as the target calibration data.

Optionally, fig. 5 is a block diagram of a third color calibration device according to an exemplary embodiment of the present disclosure, as shown in fig. 5, the device further comprising:

the linear processing module 306 is configured to perform linear processing on the target calibration data for each target calibration data, so as to obtain target linear calibration data corresponding to the target calibration data;

the color calibration file generation module 303 is further configured to:

and generating a color calibration file corresponding to the display device according to the plurality of preset RGB data and the plurality of target linear calibration data.

Optionally, the plurality of the preset RGB data are initial RGB data in a preset color lookup table.

By the device, the calibration data is determined according to the display error of the display equipment, the target calibration data of the calibration data in the target color gamut is determined, and different target calibration data can be determined based on different target color gamuts, so that the accuracy of the color calibration file generated according to the target calibration data is higher, and the accuracy of the color display of the display equipment is improved after the color of the display equipment is calibrated according to the color calibration file.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

The present disclosure also provides a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the color calibration method provided by the present disclosure.

Fig. 6 is a block diagram of a display device 600, according to an exemplary embodiment of the present disclosure. For example, the display device 600 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 6, a display device 600 may include one or more of the following components: a processing component 602, a memory 604, a power component 606, a multimedia component 608, an audio component 610, an input/output (I/O) interface 612, a sensor component 614, and a communication component 616.

The processing component 602 generally controls overall operation of the display device 600, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 602 may include one or more processors 620 to execute instructions to perform all or part of the steps of the color calibration method described above. Further, the processing component 602 can include one or more modules that facilitate interaction between the processing component 602 and other components. For example, the processing component 602 may include a multimedia module to facilitate interaction between the multimedia component 608 and the processing component 602.

The memory 604 is configured to store various types of data to support operations at the display device 600. Examples of such data include instructions for any application or method operating on the display device 600, contact data, phonebook data, messages, pictures, video, and the like. The memory 604 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The power component 606 provides power to the various components of the display device 600. The power components 606 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the display device 600.

The multimedia component 608 includes a screen between the display device 600 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 608 includes a front camera and/or a rear camera. The front camera and/or the rear camera may receive external multimedia data when the display device 600 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 610 is configured to output and/or input audio signals. For example, the audio component 610 includes a Microphone (MIC) configured to receive external audio signals when the display device 600 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 604 or transmitted via the communication component 616. In some embodiments, audio component 610 further includes a speaker for outputting audio signals.

The I/O interface 612 provides an interface between the processing component 602 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 614 includes one or more sensors for providing status assessment of various aspects of the display device 600. For example, the sensor assembly 614 may detect an on/off state of the display device 600, a relative positioning of the components, such as a display and keypad of the display device 600, the sensor assembly 614 may also detect a change in position of the display device 600 or a component of the display device 600, the presence or absence of a user's contact with the display device 600, an orientation or acceleration/deceleration of the display device 600, and a change in temperature of the display device 600. The sensor assembly 614 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. The sensor assembly 614 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 614 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 616 is configured to facilitate communication between the display device 600 and other devices, either wired or wireless. The display device 600 may access a wireless network based on a communication standard, such as WiFi,2G, or 3G, or a combination thereof. In one exemplary embodiment, the communication component 616 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 616 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the display device 600 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for performing the color calibration methods described above.

In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 604, including instructions executable by processor 620 of display device 600 to perform the color calibration method described above. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

In another exemplary embodiment, a computer program product is also provided, comprising a computer program executable by a programmable apparatus, the computer program having code portions for performing the above-described color calibration method when executed by the programmable apparatus.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A color calibration method for use with a display device, the method comprising:

acquiring a plurality of preset RGB data;

2. The method of claim 1, wherein the determining a display error when the display device displays the preset RGB data comprises:

3. The method of claim 2, wherein prior to said determining a display error in the display of the preset RGB data by the display device based on the preset RGB data and the RGB tristimulus values, the method further comprises:

4. A method according to claim 3, wherein said determining calibration data corresponding to said preset RGB data based on said display error and said preset RGB data comprises:

5. A method according to claim 3, wherein said determining target calibration data for which said calibration data is in a target color gamut comprises:

6. A method according to claim 3, wherein before said generating a color calibration file corresponding to said display device from a plurality of said preset RGB data and a plurality of said target calibration data, said method further comprises:

7. The method of any one of claims 1-6, wherein the plurality of pre-set RGB data are initial RGB data in a pre-set color look-up table.

8. A color calibration apparatus for use with a display device, the apparatus comprising:

9. A computer readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the steps of the method of any of claims 1-7.

10. A display device, characterized by comprising:

a memory having a computer program stored thereon;

a processor for executing the computer program in the memory to implement the steps of the method of any one of claims 1-7.