CN110322857B - Color compensation method and display device - Google Patents
Color compensation method and display device Download PDFInfo
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- CN110322857B CN110322857B CN201910603182.4A CN201910603182A CN110322857B CN 110322857 B CN110322857 B CN 110322857B CN 201910603182 A CN201910603182 A CN 201910603182A CN 110322857 B CN110322857 B CN 110322857B
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
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Abstract
The invention provides a color compensation method and a display device, wherein the method comprises the following steps: determining the offset of the color coordinate according to the change of the color coordinate influence factors and a preset first corresponding relation; the color coordinate influencing factors include at least one of: temperature, backlight driving current, color temperature of the display device; the first corresponding relation comprises a corresponding relation between the change of the color coordinate influence factor and the offset of the color coordinate; determining a color compensation value according to the offset of the color coordinate, wherein the offset of the color coordinate comprises: an initial offset of the x coordinate and an initial offset of the y coordinate; and compensating the color of the display equipment according to the color compensation value. The method of the embodiment of the invention realizes the color compensation after the color coordinates of the display equipment generate the offset.
Description
Technical Field
The present invention relates to the field of display processing technologies, and in particular, to a color compensation method and a display device.
Background
Because the wavelength emitted by the quantum dots is only related to the energy level structure of the quantum dots (the size of the quantum dots), the half-wave width of the emitted wavelength is narrow, the luminous purity is high, and the display device adopting the quantum dot luminescent material has high color gamut, so that the quantum dot display device is widely applied.
In the related art, in the quantum dot display device, when there is a local backlight partition control function, for a local area, when a driving current of an LED backlight and a temperature of the local area are changed, an excitation current of a quantum dot light emitting material is changed, and a color coordinate of the display device is changed accordingly, thereby causing a large shift of the color coordinate of the display device.
Disclosure of Invention
The invention provides a color compensation method and a display device, which are used for realizing color compensation after the color coordinates of the display device are deviated.
In a first aspect, the present invention provides a color compensation method, including:
determining the offset of the color coordinate according to the change of the color coordinate influence factors and a preset first corresponding relation; the color coordinate influencing factors include at least one of: temperature, backlight driving current, color temperature of the display device; the first corresponding relation comprises a corresponding relation between the change of the color coordinate influence factor and the offset of the color coordinate;
determining a color compensation value according to the offset of the color coordinate, wherein the offset of the color coordinate comprises: an initial offset of an x coordinate and an initial offset of a y coordinate;
and compensating the color of the display equipment according to the color compensation value.
In a second aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the method of any one of the first aspect.
In a third aspect, an embodiment of the present invention provides a display device, including:
a processor; and
a memory for storing executable instructions of the processor;
wherein the processor is configured to perform the method of any of the first aspects via execution of the executable instructions.
According to the color compensation method and the display device provided by the embodiment of the invention, the offset of the color coordinate is determined according to the change of the color coordinate influence factor and the preset first corresponding relation; the color coordinate influencing factors include at least one of: temperature, backlight driving current, color temperature of the display device; the first corresponding relation comprises a corresponding relation between the change of the color coordinate influence factor and the offset of the color coordinate; determining a color compensation value according to the offset of the color coordinate, wherein the offset of the color coordinate comprises: an initial offset of the x coordinate and an initial offset of the y coordinate; according to the scheme, the color of the display equipment is compensated according to the color compensation value, the color compensation is carried out after the color coordinate of the display equipment is deviated, and the accuracy of color restoration is ensured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a flow chart illustrating a color compensation method according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a color compensation apparatus according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an embodiment of an electronic device provided in the present invention.
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terms "comprising" and "having," and any variations thereof, in the description and claims of this invention and the drawings described herein are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Firstly, the application scene related to the invention is introduced:
the method provided by the embodiment of the invention is applied to display equipment, such as televisions, computers and the like, and the color is compensated after the color coordinate of the display equipment is deviated, so that the deviation of the color coordinate is reduced, the color accuracy of the display equipment in different pictures is consistent, and the user experience is improved.
The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 1 is a schematic flow chart of a color compensation method according to an embodiment of the present invention. As shown in fig. 1, the method provided by this embodiment includes:
step 101, determining the offset of the color coordinate according to the change of the color coordinate influence factor and a preset first corresponding relation; the color coordinate influencing factors include at least one of: temperature, backlight driving current, color temperature of the display device; the first correspondence relationship includes a correspondence relationship between a change in the color coordinate affecting factor and the amount of shift in the color coordinate.
Specifically, the offset of the color coordinates is determined by researching the time-varying curves of the backlight driving current, the temperature and the ambient light (color temperature) of the color coordinates of the display equipment, and the color is compensated, so that the accuracy of color restoration is ensured.
Before step 101, the following operations may also be performed:
acquiring the change of the temperature of the display equipment according to a temperature sensor in the display equipment;
acquiring the change of the backlight driving current according to the detected duty ratio of the backlight driving current of the display equipment;
and acquiring the change of the color temperature of the display equipment according to an ambient light sensor in the display equipment.
Specifically, the change of the temperature of the display device is acquired according to a temperature sensor in the display device, and the offset amount of the color coordinate is determined according to a preset first corresponding relationship, that is, a corresponding relationship between the change of the color coordinate influence factor and the offset amount of the color coordinate.
The method comprises the steps of obtaining the change of the color temperature of the display equipment according to an ambient light sensor in the display equipment, and determining the offset of the color coordinate according to a preset first corresponding relation, namely the corresponding relation between the change of the color coordinate influence factor and the offset of the color coordinate.
And detecting the change of the duty ratio of the backlight driving current so as to obtain the change of the backlight driving current, and determining the offset of the color coordinate according to the corresponding relation between the color coordinate offset and the change of the duty ratio of the backlight driving current.
Further, in the embodiment of the present invention, the offset of the color coordinate caused by the three factors may be processed in a unified manner, so as to obtain the final offset of the color coordinate.
The influence of the backlight driving current on the color coordinate can be considered in two aspects, namely the change of the LED backlight and the quantum dots along with the backlight driving current on one hand, and the change of the backlight driving current caused by the change of the image content on the other hand, and the LED backlight and the quantum dots are unified together and then compensated.
And 103, compensating the color of the display equipment according to the color compensation value.
Specifically, the gray scale values of different colors affect the shift of different color coordinates, for example, the red gray scale value affects the shift of the x coordinate, and the smaller the red gray scale value is, the smaller the coordinate value of the x coordinate is; the smaller the blue gray scale value is, the larger the coordinate value of the x coordinate is, and the larger the coordinate value of the y coordinate is; the smaller the green gray scale value, the smaller the coordinate value of the y coordinate.
According to the offset of the color coordinate, the color compensation values of different colors can be determined, and then different colors are compensated according to the color compensation values of different colors, namely, the compensated color compensation values of different colors are displayed.
The method of the embodiment determines the offset of the color coordinate according to the change of the color coordinate influence factor and a preset first corresponding relation; the color coordinate influencing factors include at least one of: temperature, backlight driving current, color temperature of the display device; the first corresponding relation comprises a corresponding relation between the change of the color coordinate influence factor and the offset of the color coordinate; determining a color compensation value according to the offset of the color coordinate, wherein the offset of the color coordinate comprises: an initial offset of the x coordinate and an initial offset of the y coordinate; according to the scheme, the color of the display equipment is compensated according to the color compensation value, the color compensation is carried out after the color coordinate of the display equipment is deviated, and the accuracy of color restoration is ensured.
On the basis of the above embodiments, further, the above scheme can be exemplified by the following scenarios:
in one scenario, step 102 may be implemented as follows:
if the initial offset of the x coordinate is greater than 0 and the initial offset of the y coordinate is less than 0, determining a color compensation value corresponding to blue according to the initial offset of the y coordinate and a preset second corresponding relation; the second corresponding relation comprises a corresponding relation between the offset of the y coordinate and a color compensation value corresponding to blue;
determining the final offset of the x coordinate according to the color compensation value corresponding to the blue and the initial offset of the x coordinate;
determining a color compensation value corresponding to red according to the final offset of the x coordinate and a preset third corresponding relation; the third correspondence includes a correspondence of an offset amount of the x coordinate and a color compensation value corresponding to red.
Specifically, if the initial offset of the x coordinate is greater than 0, and the initial offset of the y coordinate is less than 0, that is, the initial value of the x coordinate is less than the current value of the x coordinate, and the initial value of the y coordinate is greater than the current value of the y coordinate, the gray-scale value of blue is reduced to increase the coordinate value of the y coordinate to be equal to or close to the initial value, and it is assumed that the following relationship can be obtained according to the second corresponding relationship: if the gray level of blue is decreased by one step (gray level 1), and the shift amount of the y coordinate is Δ y1, the size of the gray level that blue should be decreased, that is, the color compensation value corresponding to blue, can be determined according to Δ y1 and the initial shift amount of the y coordinate.
Since the offset of the x coordinate is increased while adjusting the blue color, the final offset of the x coordinate can be further determined according to the color compensation value corresponding to the blue color and the initial offset of the x coordinate, and further according to the principle, the color compensation value corresponding to the red color is determined, and the adjustment of the gray scale value of the red color only affects the offset of the x coordinate. That is, it is assumed that the following relationship can be obtained from the third correspondence relationship: if the grayscale value of red is decreased by one step (grayscale value 1), and the offset of the x coordinate is Δ x1, the size of the grayscale value that the red should be decreased, i.e. the color compensation value corresponding to the red, can be determined according to Δ x1 and the final offset of the x coordinate.
In the embodiment of the invention, for green, adjusting the gray level of the green may cause the brightness to change, so that the adjustment of blue is prioritized.
and subtracting the color compensation value corresponding to the blue color from the current gray-scale value of the blue color of the display equipment to obtain the adjusted gray-scale value of the blue color.
Subtracting the color compensation value corresponding to the red color from the current gray-scale value of the red color of the display equipment to obtain an adjusted gray-scale value of the red color;
and displaying according to the adjusted blue gray-scale value and the adjusted red gray-scale value.
Specifically, in the embodiment of the present invention, it is generally considered to reduce the gray scale values of different colors to achieve the purpose of color compensation, and if the gray scale values are increased, color saturation may be caused.
The final offset of the x coordinate may specifically be determined as follows:
determining a new offset of the x coordinate according to the color compensation value corresponding to the blue color and a preset fourth corresponding relation;
obtaining the final offset of the x coordinate according to the new offset of the x coordinate and the initial offset of the x coordinate; the fourth correspondence includes a correspondence of an offset amount of the x coordinate and a color compensation value corresponding to blue.
Specifically, it is assumed that the following relationship can be obtained from the fourth correspondence relationship: if the gray-scale value of blue is decreased by one step (gray-scale value 1), the offset of the x coordinate is Δ x2, and then a new offset of the x coordinate can be obtained according to Δ x2 and the color compensation value corresponding to blue, so as to determine the final offset of the x coordinate.
In another scenario, step 102 may be implemented in the following manner:
if the initial offset of the x coordinate is less than 0 and the initial offset of the y coordinate is greater than 0, determining a color compensation value corresponding to blue according to the initial offset of the x coordinate and a fourth corresponding relation;
determining the final offset of the y coordinate according to the color compensation value corresponding to the blue and the initial offset of the y coordinate;
determining a color compensation value corresponding to green according to the final offset of the y coordinate and a preset fifth corresponding relation; the fifth corresponding relationship includes a corresponding relationship between an offset of the y coordinate and a color compensation value corresponding to green.
Specifically, since the initial offset amount of the x coordinate is less than 0, that is, the initial value of the x coordinate is less than the current value of the x coordinate, the gray-scale value of blue is first reduced to increase the coordinate value of the x coordinate to be equal to or close to the initial value, and it is assumed that the following relationship can be obtained according to the fourth corresponding relationship: if the gray level of blue is decreased by one step (gray level 1), and the offset of the x coordinate is Δ x2, the size of the gray level that blue should be decreased, that is, the color compensation value corresponding to blue, can be determined according to Δ x2 and the initial offset of the x coordinate.
Since the offset of the y coordinate is increased while blue is adjusted, the final offset of the y coordinate can be further determined according to the color compensation value corresponding to blue and the initial offset of the y coordinate, and then according to the principle, the color compensation value corresponding to green is determined, and the gray-scale value of green is adjusted to only affect the offset of the y coordinate. That is, it is assumed that the following relationship can be obtained from the fifth correspondence relationship: if the gray level of green is decreased by one step (gray level 1), and the shift amount of the y coordinate is Δ y2, the size of the gray level that green should be decreased, that is, the color compensation value corresponding to green, can be determined according to Δ y2 and the final shift amount of the y coordinate.
Step 103 may be specifically implemented by the following steps:
and subtracting the color compensation value corresponding to the blue color from the current gray-scale value of the blue color of the display equipment to obtain the adjusted gray-scale value of the blue color.
Subtracting the color compensation value corresponding to the green color from the current gray scale value of the green color of the display equipment to obtain an adjusted gray scale value of the green color;
and displaying according to the adjusted blue gray scale value and the adjusted green gray scale value.
The final offset of the y coordinate is determined specifically by the following method:
determining a new offset of the y coordinate according to the color compensation value corresponding to the blue color and a second corresponding relation;
and obtaining the final offset of the y coordinate according to the new offset of the y coordinate and the initial offset of the y coordinate.
The principle of the determination method of the final offset of the y coordinate is the same as that of the final offset of the x coordinate, and is not described herein again.
In another scenario, step 102 may be implemented in the following manner:
if the initial offset of the x coordinate is greater than 0 and the initial offset of the y coordinate is greater than 0, determining a color compensation value corresponding to red according to the initial offset of the x coordinate and a third corresponding relation; and determining a color compensation value corresponding to green according to the initial offset of the y coordinate and the fifth corresponding relation.
Specifically, if the initial offset of the x coordinate is greater than 0 and the initial offset of the y coordinate is greater than 0, that is, the initial value of the x coordinate is smaller than the current value of the x coordinate and the initial value of the y coordinate is smaller than the current value of the y coordinate, the color compensation value corresponding to the red color is determined according to the above principle, and the adjustment of the gray scale value of the red color only affects the offset of the x coordinate. That is, it is assumed that the following relationship can be obtained from the third correspondence relationship: if the grayscale value of red is decreased by one step (grayscale value 1), and the offset of the x coordinate is Δ x1, the size of the grayscale value that the red should be decreased, i.e. the color compensation value corresponding to the red, can be determined according to Δ x1 and the final offset of the x coordinate. According to the principle, the color compensation value corresponding to the green color is determined, and the gray-scale value of the green color is adjusted to only influence the offset of the y coordinate. That is, it is assumed that the following relationship can be obtained from the fifth correspondence relationship: if the gray level of green is decreased by one step (gray level 1), and the shift amount of the y coordinate is Δ y2, the size of the gray level that green should be decreased, that is, the color compensation value corresponding to green, can be determined according to Δ y2 and the final shift amount of the y coordinate.
Step 103 may be specifically implemented by the following steps:
and subtracting the color compensation value corresponding to the red color from the current gray-scale value of the red color of the display equipment to obtain the adjusted gray-scale value of the red color.
Subtracting the color compensation value corresponding to the green color from the current gray scale value of the green color of the display equipment to obtain an adjusted gray scale value of the green color;
and displaying according to the adjusted red gray scale value and the adjusted green gray scale value.
In another scenario, step 102 may be implemented in the following manner:
if the initial offset of the x coordinate is less than 0, the initial offset of the y coordinate is less than 0, and the absolute value of the initial offset of the y coordinate is greater than the absolute value of the initial offset of the x coordinate, determining a color compensation value corresponding to blue according to the initial offset of the y coordinate and a second corresponding relation;
determining the final offset of the x coordinate according to the color compensation value corresponding to the blue and the initial offset of the x coordinate;
if the final offset of the x coordinate is greater than 0, determining a color compensation value degree corresponding to red according to the final offset of the x coordinate and a third corresponding relation;
if the final offset of the x coordinate is less than 0, determining a new color compensation value corresponding to blue according to the offset of the x coordinate and the second corresponding relation;
determining a new offset of the y coordinate according to the new color compensation value corresponding to the blue color;
and determining a color compensation value corresponding to green according to the new offset of the y coordinate and the fifth corresponding relation.
Specifically, if the initial offset of the x coordinate is less than 0, the initial offset of the y coordinate is less than 0, that is, the initial value of the x coordinate is greater than the current value of the x coordinate, and the initial value of the y coordinate is greater than the current value of the y coordinate, so that which of the initial offset of the x coordinate and the absolute value of the initial offset of the y coordinate is greater can be determined, and the coordinate with the greater absolute value of the initial offset is adjusted first.
Assuming that the absolute value of the initial shift amount of the y coordinate is large, by decreasing the gray-scale value of blue to increase the coordinate value of the y coordinate to be equal to or close to the initial value, it is assumed that the following relationship can be obtained according to the second correspondence relationship: if the gray level of blue is decreased by one step (gray level 1), and the shift amount of the y coordinate is Δ y1, the size of the gray level that blue should be decreased, that is, the color compensation value corresponding to blue, can be determined according to Δ y1 and the initial shift amount of the y coordinate.
Since the shift amount of the x coordinate is increased while adjusting the blue color, the final shift amount of the x coordinate can be further determined according to the color compensation value corresponding to the blue color and the initial shift amount of the x coordinate, and since the initial shift amount of the x coordinate is less than 0, whether the final shift amount of the x coordinate is still less than 0 is further determined.
And if the final offset of the x coordinate is larger than 0, directly adjusting the red color, determining a color compensation value corresponding to the red color according to the principle, and adjusting the gray scale value of the red color only to influence the offset of the x coordinate. That is, it is assumed that the following relationship can be obtained from the third correspondence relationship: if the grayscale value of red is decreased by one step (grayscale value 1), and the offset of the x coordinate is Δ x1, the size of the grayscale value that the red should be decreased, i.e. the color compensation value corresponding to the red, can be determined according to Δ x1 and the final offset of the x coordinate.
If the final offset of the x coordinate is still less than 0, blue needs to be adjusted, and adjusting blue will also increase the offset of the y coordinate, and green needs to be further adjusted.
In another scenario, step 102 may be implemented in the following manner:
if the initial offset of the x coordinate is less than 0, the initial offset of the y coordinate is less than 0, and the absolute value of the initial offset of the x coordinate is greater than the absolute value of the initial offset of the y coordinate, determining a color compensation value corresponding to blue according to the initial offset of the x coordinate and a fourth corresponding relation;
determining the final offset of the y coordinate according to the color compensation value corresponding to the blue and the initial offset of the y coordinate;
if the final offset of the y coordinate is greater than 0, determining a color compensation value degree corresponding to green according to the final offset of the y coordinate and a fifth corresponding relation;
if the final offset of the y coordinate is less than 0, determining a new color compensation value corresponding to blue according to the final offset of the y coordinate and the second corresponding relation;
determining a new offset of the x coordinate according to the new color compensation value corresponding to the blue color;
and determining a color compensation value corresponding to the red according to the new offset of the x coordinate and the third corresponding relation.
Assuming that the absolute value of the initial shift amount of the x coordinate is large, by decreasing the gray-scale value of blue to increase the coordinate value of the x coordinate to be equal to or close to the initial value, it is assumed that the following relationship can be obtained according to the fourth correspondence relationship: if the gray level of blue is decreased by one step (gray level 1), and the offset of the x coordinate is Δ x2, the size of the gray level that blue should be decreased, that is, the color compensation value corresponding to blue, can be determined according to Δ x2 and the initial offset of the x coordinate.
And determining the final offset of the y coordinate according to the color compensation value corresponding to the blue and the initial offset of the y coordinate, and further judging whether the final offset of the y coordinate is still less than 0 or not because the initial offset of the y coordinate is less than 0.
If the final offset of the y coordinate is larger than 0, the green color can be directly adjusted, according to the principle, the color compensation value corresponding to the green color is determined, and the adjustment of the gray scale value of the green color only affects the offset of the y coordinate.
If the final offset of the y coordinate is still less than 0, blue needs to be adjusted, and adjusting blue will also increase the offset of the c coordinate, and further red needs to be adjusted, which is the same as the foregoing scheme in a specific manner and is not described herein again.
Step 103 may be specifically implemented by the following steps:
and subtracting the color compensation value corresponding to the red color from the current gray-scale value of the red color of the display equipment to obtain the adjusted gray-scale value of the red color.
Subtracting the color compensation value corresponding to the green color from the current gray scale value of the green color of the display equipment to obtain an adjusted gray scale value of the green color;
subtracting the color compensation value corresponding to the blue color and the new color compensation value corresponding to the blue color from the current gray-scale value of the blue color of the display equipment to obtain an adjusted gray-scale value of the blue color;
and displaying according to the adjusted red gray scale value, the adjusted green gray scale value and the adjusted blue gray scale value.
In this embodiment, a color compensation value is determined according to different situations of the color coordinate offset, where the color coordinate offset includes: an initial offset of the x coordinate and an initial offset of the y coordinate; according to the scheme, the color of the display equipment is compensated according to the color compensation value, the color compensation is carried out after the color coordinate of the display equipment is deviated, and the accuracy of color restoration is ensured.
Fig. 2 is a structural diagram of an embodiment of a color compensation apparatus provided in the present invention, and as shown in fig. 2, the color compensation apparatus of the present embodiment includes:
a first determining module 201, configured to determine an offset of the color coordinate according to a change of the color coordinate influence factor and a preset first corresponding relationship; the color coordinate influencing factors include at least one of: temperature, backlight driving current, color temperature of the display device; the first corresponding relation comprises a corresponding relation between the change of the color coordinate influence factor and the offset of the color coordinate;
a second determining module 202, configured to determine a color compensation value according to the offset of the color coordinate, where the offset of the color coordinate includes: an initial offset of the x coordinate and an initial offset of the y coordinate;
and the processing module 203 is configured to compensate the color of the display device according to the color compensation value.
In a possible implementation manner, the second determining module 202 is specifically configured to:
if the initial offset of the x coordinate is greater than 0 and the initial offset of the y coordinate is less than 0, determining a color compensation value corresponding to blue according to the initial offset of the y coordinate and a preset second corresponding relation; the second corresponding relation comprises a corresponding relation between the offset of the y coordinate and a color compensation value corresponding to blue;
determining the final offset of the x coordinate according to the color compensation value corresponding to the blue and the initial offset of the x coordinate;
determining a color compensation value corresponding to red according to the final offset of the x coordinate and a preset third corresponding relation; the third corresponding relation comprises a corresponding relation between the offset of the x coordinate and the color compensation value corresponding to the red color;
correspondingly, the processing module 203 is specifically configured to:
subtracting the color compensation value corresponding to the blue color from the current gray-scale value of the blue color of the display equipment to obtain an adjusted gray-scale value of the blue color;
subtracting the color compensation value corresponding to the red color from the current gray-scale value of the red color of the display equipment to obtain an adjusted gray-scale value of the red color;
and displaying according to the adjusted blue gray-scale value and the adjusted red gray-scale value.
In a possible implementation manner, the second determining module 202 is specifically configured to:
determining a new offset of the x coordinate according to the color compensation value corresponding to the blue color and a preset fourth corresponding relation;
obtaining the final offset of the x coordinate according to the new offset of the x coordinate and the initial offset of the x coordinate; the fourth correspondence includes a correspondence of an offset amount of the x coordinate and a color compensation value corresponding to blue.
In a possible implementation manner, the second determining module 202 is specifically configured to:
if the initial offset of the x coordinate is less than 0 and the initial offset of the y coordinate is greater than 0, determining a color compensation value corresponding to blue according to the initial offset of the x coordinate and a fourth corresponding relation;
determining the final offset of the y coordinate according to the color compensation value corresponding to the blue and the initial offset of the y coordinate;
determining a color compensation value corresponding to green according to the final offset of the y coordinate and a preset fifth corresponding relation; the fifth corresponding relation comprises a corresponding relation between the offset of the y coordinate and a color compensation value corresponding to green;
correspondingly, the processing module 203 is specifically configured to:
subtracting the color compensation value corresponding to the blue color from the current gray-scale value of the blue color of the display equipment to obtain an adjusted gray-scale value of the blue color;
subtracting the color compensation value corresponding to the green color from the current gray scale value of the green color of the display equipment to obtain an adjusted gray scale value of the green color;
and displaying according to the adjusted blue gray scale value and the adjusted green gray scale value.
In a possible implementation manner, the second determining module 202 is specifically configured to:
determining a new offset of the y coordinate according to the color compensation value corresponding to the blue color and a second corresponding relation;
and obtaining the final offset of the y coordinate according to the new offset of the y coordinate and the initial offset of the y coordinate.
In a possible implementation manner, the second determining module 202 is specifically configured to:
if the initial offset of the x coordinate is greater than 0 and the initial offset of the y coordinate is greater than 0, determining a color compensation value corresponding to red according to the initial offset of the x coordinate and a third corresponding relation; determining a color compensation value corresponding to green according to the initial offset of the y coordinate and the fifth corresponding relation;
correspondingly, the processing module 203 is specifically configured to:
subtracting the color compensation value corresponding to the red color from the current gray-scale value of the red color of the display equipment to obtain an adjusted gray-scale value of the red color;
subtracting the color compensation value corresponding to the green color from the current gray scale value of the green color of the display equipment to obtain an adjusted gray scale value of the green color;
and displaying according to the adjusted red gray scale value and the adjusted green gray scale value.
In a possible implementation manner, the second determining module 202 is specifically configured to:
if the initial offset of the x coordinate is less than 0, the initial offset of the y coordinate is less than 0, and the absolute value of the initial offset of the y coordinate is greater than the absolute value of the initial offset of the x coordinate, determining a color compensation value corresponding to blue according to the initial offset of the y coordinate and a second corresponding relation;
determining the final offset of the x coordinate according to the color compensation value corresponding to the blue and the initial offset of the x coordinate;
if the final offset of the x coordinate is greater than 0, determining a color compensation value degree corresponding to red according to the final offset of the x coordinate and a third corresponding relation;
if the final offset of the x coordinate is less than 0, determining a new color compensation value corresponding to blue according to the offset of the x coordinate and the second corresponding relation;
determining a new offset of the y coordinate according to the new color compensation value corresponding to the blue color;
and determining a color compensation value corresponding to green according to the new offset of the y coordinate and the fifth corresponding relation.
In a possible implementation manner, the second determining module 202 is specifically configured to:
if the initial offset of the x coordinate is less than 0, the initial offset of the y coordinate is less than 0, and the absolute value of the initial offset of the x coordinate is greater than the absolute value of the initial offset of the y coordinate, determining a color compensation value corresponding to blue according to the initial offset of the x coordinate and a fourth corresponding relation;
determining the final offset of the y coordinate according to the color compensation value corresponding to the blue and the initial offset of the y coordinate;
if the final offset of the y coordinate is greater than 0, determining a color compensation value degree corresponding to green according to the final offset of the y coordinate and a fifth corresponding relation;
if the final offset of the y coordinate is less than 0, determining a new color compensation value corresponding to blue according to the final offset of the y coordinate and the second corresponding relation;
determining a new offset of the x coordinate according to the new color compensation value corresponding to the blue color;
and determining a color compensation value corresponding to the red according to the new offset of the x coordinate and the third corresponding relation.
In a possible implementation manner, the processing module 203 is specifically configured to:
subtracting the color compensation value corresponding to the red color from the current gray-scale value of the red color of the display equipment to obtain an adjusted gray-scale value of the red color;
subtracting the color compensation value corresponding to the green color from the current gray scale value of the green color of the display equipment to obtain an adjusted gray scale value of the green color;
subtracting the color compensation value corresponding to the blue color and the new color compensation value corresponding to the blue color from the current gray-scale value of the blue color of the display equipment to obtain an adjusted gray-scale value of the blue color;
and displaying according to the adjusted red gray scale value, the adjusted green gray scale value and the adjusted blue gray scale value.
In a possible implementation manner, the processing module 203 is further configured to:
acquiring the change of the temperature of the display equipment according to a temperature sensor in the display equipment;
acquiring the change of the backlight driving current according to the detected duty ratio of the backlight driving current of the display equipment;
and acquiring the change of the color temperature of the display equipment according to an ambient light sensor in the display equipment.
The apparatus of this embodiment may be configured to implement the technical solutions of the above method embodiments, and the implementation principles and technical effects are similar, which are not described herein again.
Fig. 3 is a structural diagram of an embodiment of a display device provided in the present invention, and as shown in fig. 3, the display device includes:
a processor 301, and a memory 302 for storing executable instructions of the processor 301.
Optionally, the method may further include: and a display screen 303 for displaying the image data.
The above components may communicate over one or more buses.
The display screen may include a backlight module and a display panel, wherein the luminescent material in the backlight module may include a quantum dot luminescent material, and the backlight source may be an LED backlight source.
The processor 301 is configured to execute the corresponding method in the foregoing method embodiment by executing the executable instruction, and the specific implementation process thereof may refer to the foregoing method embodiment, which is not described herein again.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the method in the foregoing method embodiment is implemented.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, 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 will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (9)
1. A color compensation method is applied to a display device, wherein the display device is a quantum dot display device, and the method comprises the following steps:
determining the offset of the color coordinate according to the change of the color coordinate influence factors and a preset first corresponding relation; the color coordinate influencing factors include at least one of: temperature, backlight driving current, color temperature of the display device; the first corresponding relation comprises a corresponding relation between the change of the color coordinate influence factor and the offset of the color coordinate;
determining a color compensation value according to the offset of the color coordinate, wherein the offset of the color coordinate comprises: an initial offset of an x coordinate and an initial offset of a y coordinate;
compensating the color of the display equipment according to the color compensation value;
determining a color compensation value according to the offset of the color coordinate comprises:
if the initial offset of the x coordinate is greater than 0 and the initial offset of the y coordinate is greater than 0, determining a color compensation value corresponding to red according to the initial offset of the x coordinate and a third corresponding relation; determining a color compensation value corresponding to green according to the initial offset of the y coordinate and the fifth corresponding relation;
if the initial offset of the x coordinate is greater than 0 and the initial offset of the y coordinate is less than 0, determining a color compensation value corresponding to blue according to the initial offset of the y coordinate and a preset second corresponding relation; determining the final offset of the x coordinate according to the color compensation value corresponding to the blue and the initial offset of the x coordinate; determining a color compensation value corresponding to red according to the final offset of the x coordinate and a preset third corresponding relation;
if the initial offset of the x coordinate is less than 0 and the initial offset of the y coordinate is greater than 0, determining a color compensation value corresponding to blue according to the initial offset of the x coordinate and a fourth corresponding relation; determining the final offset of the y coordinate according to the color compensation value corresponding to the blue and the initial offset of the y coordinate; determining a color compensation value corresponding to green according to the final offset of the y coordinate and a preset fifth corresponding relation;
the second corresponding relation comprises a corresponding relation between the offset of the y coordinate and a color compensation value corresponding to blue; the third corresponding relation comprises a corresponding relation between the offset of the x coordinate and the color compensation value corresponding to the red color; the fourth corresponding relation comprises a corresponding relation between the offset of the x coordinate and the color compensation value corresponding to the blue color; the fifth corresponding relationship includes a corresponding relationship between an offset of the y coordinate and a color compensation value corresponding to green.
2. The method of claim 1, wherein compensating the color of the display device according to the color compensation value comprises:
subtracting the color compensation value corresponding to the green color from the current gray scale value of the green color of the display equipment to obtain an adjusted gray scale value of the green color;
subtracting the color compensation value corresponding to the blue color from the current gray-scale value of the blue color of the display equipment to obtain an adjusted gray-scale value of the blue color;
subtracting the color compensation value corresponding to the red color from the current gray-scale value of the red color of the display equipment to obtain an adjusted gray-scale value of the red color;
and displaying according to the adjusted blue gray-scale value and the adjusted red gray-scale value.
3. The method of claim 1, wherein determining the final offset of the x-coordinate according to the color compensation value corresponding to the blue color and the initial offset of the x-coordinate comprises:
determining a new offset of the x coordinate according to the color compensation value corresponding to the blue color and a preset fourth corresponding relation;
and obtaining the final offset of the x coordinate according to the new offset of the x coordinate and the initial offset of the x coordinate.
4. The method of claim 1, wherein determining the final shift amount of the y coordinate according to the color compensation value corresponding to the blue color and the initial shift amount of the y coordinate comprises:
determining a new offset of the y coordinate according to the color compensation value corresponding to the blue color and a second corresponding relation;
and obtaining the final offset of the y coordinate according to the new offset of the y coordinate and the initial offset of the y coordinate.
5. The method of claim 1, wherein determining a color compensation value according to the shift amount of the color coordinate comprises:
if the initial offset of the x coordinate is less than 0, the initial offset of the y coordinate is less than 0, and the absolute value of the initial offset of the y coordinate is greater than the absolute value of the initial offset of the x coordinate, determining a color compensation value corresponding to blue according to the initial offset of the y coordinate and a second corresponding relation;
determining the final offset of the x coordinate according to the color compensation value corresponding to the blue and the initial offset of the x coordinate;
if the final offset of the x coordinate is greater than 0, determining a color compensation value degree corresponding to red according to the final offset of the x coordinate and a third corresponding relation;
if the final offset of the x coordinate is less than 0, determining a new color compensation value corresponding to blue according to the offset of the x coordinate and the second corresponding relation;
determining a new offset of the y coordinate according to the new color compensation value corresponding to the blue color;
and determining a color compensation value corresponding to green according to the new offset of the y coordinate and the fifth corresponding relation.
6. The method of claim 1, wherein determining a color compensation value according to the shift amount of the color coordinate comprises:
if the initial offset of the x coordinate is less than 0, the initial offset of the y coordinate is less than 0, and the absolute value of the initial offset of the x coordinate is greater than the absolute value of the initial offset of the y coordinate, determining a color compensation value corresponding to blue according to the initial offset of the x coordinate and a fourth corresponding relation;
determining the final offset of the y coordinate according to the color compensation value corresponding to the blue and the initial offset of the y coordinate;
if the final offset of the y coordinate is greater than 0, determining a color compensation value degree corresponding to green according to the final offset of the y coordinate and a fifth corresponding relation;
if the final offset of the y coordinate is less than 0, determining a new color compensation value corresponding to blue according to the final offset of the y coordinate and the second corresponding relation;
determining a new offset of the x coordinate according to the new color compensation value corresponding to the blue color;
and determining a color compensation value corresponding to the red according to the new offset of the x coordinate and the third corresponding relation.
7. The method according to claim 5 or 6, wherein the compensating the color of the display device according to the color compensation value comprises:
subtracting the color compensation value corresponding to the red color from the current gray-scale value of the red color of the display equipment to obtain an adjusted gray-scale value of the red color;
subtracting the color compensation value corresponding to the green color from the current gray scale value of the green color of the display equipment to obtain an adjusted gray scale value of the green color;
subtracting the color compensation value corresponding to the blue color and the new color compensation value corresponding to the blue color from the current gray-scale value of the blue color of the display equipment to obtain an adjusted gray-scale value of the blue color;
and displaying according to the adjusted red gray scale value, the adjusted green gray scale value and the adjusted blue gray scale value.
8. The method of any of claims 1-6, wherein prior to determining the offset of the color coordinates, further comprising:
acquiring the change of the temperature of the display equipment according to a temperature sensor in the display equipment;
acquiring the change of the backlight driving current according to the detected duty ratio of the backlight driving current of the display equipment;
and acquiring the change of the color temperature of the display equipment according to an ambient light sensor in the display equipment.
9. A display device, comprising:
a processor; and
a memory for storing executable instructions of the processor;
wherein the processor is configured to perform the method of any of claims 1-8 via execution of the executable instructions.
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| CN111679483A (en) * | 2020-06-02 | 2020-09-18 | Tcl华星光电技术有限公司 | Method for adjusting color gamut of liquid crystal display panel |
| CN112233605B (en) * | 2020-10-28 | 2022-08-09 | 合肥京东方光电科技有限公司 | Color gamut adjusting method and device, electronic equipment and storage medium |
| CN113038110B (en) * | 2021-03-11 | 2022-12-20 | 深圳康佳电子科技有限公司 | White balance calibration method, device, terminal equipment and storage medium |
| CN113506537A (en) * | 2021-06-29 | 2021-10-15 | 上海闻泰信息技术有限公司 | Color cast correction method, color cast correction device and system of OLED display |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1917035A (en) * | 2005-08-17 | 2007-02-21 | Lg电子株式会社 | Method and apparatus of correcting color coordinate and display device including apparatus of correcting color coordinate |
| CN101349856A (en) * | 2007-07-20 | 2009-01-21 | 鸿富锦精密工业（深圳）有限公司 | Projecting system and color temperature regulation method thereof |
| CN101447161A (en) * | 2008-12-02 | 2009-06-03 | 四川长虹电器股份有限公司 | Method for regulating flat panel display screen |
| KR20110071938A (en) * | 2009-12-22 | 2011-06-29 | 엘지전자 주식회사 | Method for improving image quality of liquid crystal display device and liquid crystal display device thereof |
| CN103354076A (en) * | 2012-10-30 | 2013-10-16 | 巨尔(上海)光电照明有限公司 | Management system and method for unifying LED light colors |
| CN105632398A (en) * | 2015-12-29 | 2016-06-01 | 深圳市奥拓电子股份有限公司 | Adaptive color adjusting method and system of LED display device |
| CN106684226A (en) * | 2016-12-09 | 2017-05-17 | 青岛海信电器股份有限公司 | Bi-color chip LED system and bi-color chip LED |
| CN106710537A (en) * | 2017-03-17 | 2017-05-24 | 北京小米移动软件有限公司 | Method, device and equipment for color compensation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101998712B1 (en) * | 2013-03-25 | 2019-10-02 | 삼성디스플레이 주식회사 | Display device, data processing device for the same and method thereof |
-
2019
- 2019-07-05 CN CN201910603182.4A patent/CN110322857B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1917035A (en) * | 2005-08-17 | 2007-02-21 | Lg电子株式会社 | Method and apparatus of correcting color coordinate and display device including apparatus of correcting color coordinate |
| CN101349856A (en) * | 2007-07-20 | 2009-01-21 | 鸿富锦精密工业（深圳）有限公司 | Projecting system and color temperature regulation method thereof |
| CN101447161A (en) * | 2008-12-02 | 2009-06-03 | 四川长虹电器股份有限公司 | Method for regulating flat panel display screen |
| KR20110071938A (en) * | 2009-12-22 | 2011-06-29 | 엘지전자 주식회사 | Method for improving image quality of liquid crystal display device and liquid crystal display device thereof |
| CN103354076A (en) * | 2012-10-30 | 2013-10-16 | 巨尔(上海)光电照明有限公司 | Management system and method for unifying LED light colors |
| CN105632398A (en) * | 2015-12-29 | 2016-06-01 | 深圳市奥拓电子股份有限公司 | Adaptive color adjusting method and system of LED display device |
| CN106684226A (en) * | 2016-12-09 | 2017-05-17 | 青岛海信电器股份有限公司 | Bi-color chip LED system and bi-color chip LED |
| CN106710537A (en) * | 2017-03-17 | 2017-05-24 | 北京小米移动软件有限公司 | Method, device and equipment for color compensation |
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