Granted Patent B2

US 12,340,738 · App. 18/572,070 · Granted Jun 24, 2025

Inventors: Jian Bai (Shenzhen, CN); Jiehua Tang (Shenzhen, CN); Peng Wang (Shenzhen, CN)

Assignee: HONOR DEVICE CO., LTD.

G09G3/3208G09G2320/0233G09G2320/0271

Abstract

Claims (50)

1. A method, comprising:

obtaining a gray level value of each pixel of an input image;

performing gray level compensation on the input image based on the gray level value of each pixel and at least two compensation gray level relationships, wherein a first compensation gray level relationship matches a first gray level range, and a second compensation gray level relationship matches a second gray level range, wherein the first compensation gray level relationship is fitted and generated based on an N-nomial algorithm, N is an integer greater than 1, and the second compensation gray level relationship is obtained in a linear interpolation manner, and wherein a gray level value within the first gray level range is greater than a gray level value within the second gray level range; and

displaying a compensated image on a display panel of an electronic device, wherein the compensated image is based on the gray level compensation of the input image.

2. The method of claim 1 , further comprising:

obtaining at least three first gray level values of a sampled image displayed on the display panel, wherein the first gray level value is within the first gray level range;

obtaining first compensated gray level values for the at least three first gray level values; and

fitting and generating an N-nomial curve as the first compensation gray level relationship based on the at least three first gray level values, the first compensated gray level values that correspond to the first gray level values, and the N-nomial algorithm.

3. The method of claim 1 , further comprising:

acquiring at least two second gray level values of a sampled image displayed on the display panel, wherein the second gray level value is within the second gray level range; and

obtaining second compensated gray level values respectively corresponding to the at least two second gray level values,

wherein the second compensation gray level relationship is at least one linear straight line derived in the linear interpolation manner based on the at least two second gray level values and the second compensated gray level values respectively corresponding to the at least two second gray level values.

4. The method of claim 3 , wherein the second compensation gray level relationship is capable of comprising the at least one linear straight line.

5. The method of claim 1 , wherein a third compensation gray level relationship matches a third gray level range, the third compensation gray level relationship is fitted and generated based on a gray level value within the second gray level range and an M-nomial algorithm, M is an integer greater than 1, and each gray level value within the second gray level range is greater than a gray level value within the third gray level range.

6. The method of claim 5 , further comprising:

acquiring at least three second gray level values of a sampled image displayed on the display panel, wherein the second gray level value is within the second gray level range;

obtaining second compensated gray level values for the at least three second gray level values; and

fitting and generating an M-nomial curve as the third compensation gray level relationship based on the at least three second gray level values, the second compensated gray level values that correspond to the second gray level values, and the M-nomial algorithm.

7. The method of claim 5 , wherein a compensated gray level value of the gray level value of a pixel is based on the first compensation gray level relationship when the gray level value of the pixel is within the first gray level range, wherein the compensated gray level value of the gray level value of a pixel is based on the second compensation gray level relationship when the gray level value of the pixel is within the second gray level range, wherein the compensated gray level value of the gray level value of a pixel is based on the third compensation gray level relationship when the gray level value of the pixel is within the third gray level range, and wherein performing gray level compensation on the input image based on the gray level value of each pixel and the at least two compensation gray level relationships comprises performing compensation on the gray level value of the pixel based on the compensated gray level value for the pixel.

8. The method of claim 1 , wherein the first gray level range comprises: 32-255, and the second gray level range comprises: 0-31.

9. The method of claim 5 , wherein the first gray level range comprises: 32-255, the second gray level range comprises: 8-31, and the third gray level range comprises: 0-7.

10. The method of claim 3 , wherein obtaining second compensated gray level values respectively corresponding to the at least two second gray level values comprises querying the second compensated gray level values corresponding to the at least two second gray level values based on a preset lookup table (LUT).

11. An electronic device, comprising:

one or more processors;

a display panel coupled to the one or more processors; and

a memory coupled to the one or more processors, wherein the memory is configured to store instructions that, when executed by the one or more processors, cause the electronic device to be configured to:

obtain a gray level value of each pixel of an input image;

perform gray level compensation on the input image based on the gray level value of each pixel and at least two compensation gray level relationships, wherein a first compensation gray level relationship matches a first gray level range, and a second compensation gray level relationship matches a second gray level range, wherein the first compensation gray level relationship is fitted and generated based on an N-nomial algorithm, N is an integer greater than 1, and the second compensation gray level relationship is obtained in a linear interpolation manner, and wherein a gray level value within the first gray level range is greater than a gray level value within the second gray level range; and

display a compensated image on the display panel, wherein the compensated image is based on the gray level compensation of the input image.

12. A non-transitory computer-readable storage medium, comprising instructions that, when executed by one or more processors of an electronic device, cause the electronic device to be configured to:

obtain a gray level value of each pixel of an input image;

perform gray level compensation on the input image based on the gray level value of each pixel and at least two compensation gray level relationships, wherein a first compensation gray level relationship matches a first gray level range, and a second compensation gray level relationship matches a second gray level range, wherein the first compensation gray level relationship is fitted and generated based on an N-nomial algorithm, N is an integer greater than 1, and the second compensation gray level relationship is obtained in a linear interpolation manner, and wherein a gray level value within the first gray level range is greater than a gray level value within the second gray level range; and

display a compensated image on a display panel of the electronic device, wherein the compensated image is based on the gray level compensation of the input image.

13. The electronic device of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the electronic device to be configured to:

obtain at least three first gray level values of a sampled image displayed on the display panel, wherein the first gray level value is within the first gray level range;

obtain first compensated gray level values for the at least three first gray level values; and

fit and generate an N-nomial curve as the first compensation gray level relationship based on the at least three first gray level values, the first compensated gray level values that correspond to the first gray level values, and the N-nomial algorithm.

14. The electronic device of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the electronic device to be configured to:

acquire at least two second gray level values of a sampled image displayed on the display panel, wherein the second gray level value is within the second gray level range; and

obtain second compensated gray level values respectively corresponding to the at least two second gray level values,

wherein the second compensation gray level relationship is at least one linear straight line derived in the linear interpolation manner based on the at least two second gray level values and the second compensated gray level values respectively corresponding to the at least two second gray level values.

15. The electronic device of claim 14 , wherein obtaining second compensated gray level values respectively corresponding to the at least two second gray level values comprises querying the second compensated gray level values corresponding to the at least two second gray level values based on a preset lookup table (LUT).

16. The electronic device of claim 11 , wherein a third compensation gray level relationship matches a third gray level range, the third compensation gray level relationship is fitted and generated based on a gray level value within the second gray level range and an M-nomial algorithm, M is an integer greater than 1, and each gray level value within the second gray level range is greater than a gray level value within the third gray level range.

17. The electronic device of claim 16 , wherein the instructions, when executed by the one or more processors, further cause the electronic device to be configured to:

acquire at least three second gray level values of a sampled image displayed on the display panel, wherein the second gray level value is within the second gray level range;

obtain second compensated gray level values for the at least three second gray level values; and

fit and generate an M-nomial curve as the third compensation gray level relationship based on the at least three second gray level values, the second compensated gray level values that correspond to the second gray level values, and the M-nomial algorithm.

18. The electronic device of claim 16 , wherein a compensated gray level value of the gray level value of a pixel is based on the first compensation gray level relationship when the gray level value of the pixel is within the first gray level range, wherein the compensated gray level value of the gray level value of a pixel is based on the second compensation gray level relationship when the gray level value of the pixel is within the second gray level range, wherein the compensated gray level value of the gray level value of a pixel is based on the third compensation gray level relationship when the gray level value of the pixel is within the third gray level range, and wherein performing gray level compensation on the input image based on the gray level value of each pixel and the at least two compensation gray level relationships comprises performing compensation on the gray level value of the pixel based on the compensated gray level value for the pixel.

19. The electronic device of claim 16 , wherein the first gray level range comprises: 32-255, the second gray level range comprises: 8-31, and the third gray level range comprises: 0-7.

20. The electronic device of claim 11 , wherein the first gray level range comprises: 32-255, and the second gray level range comprises: 0-31.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (18)