Optical compensation method for display screen, storage medium, and electronic device

Patent metadata

Field	Value
Publication number	US-11668995-B2
Application number	US-202117532527-A
Country	US
Kind code	B2
Filing date	Nov 22, 2021
Priority date	Nov 26, 2020
Publication date	Jun 6, 2023
Grant date	Jun 6, 2023

Abstract

The present disclosure provides an optical compensation method for a display screen, a storage medium and an electronic device, and the method includes: determining a refresh time of a to-be-compensated screen; determining an exposure time as N times the refresh time, wherein N is a positive integer; controlling a camera to shoot the to-be-compensated screen based on the exposure time; acquiring an original image of the to-be-compensated screen captured by the camera; and performing optical compensation on the display effect of the to-be-compensated screen based on the original image. The present disclosure can avoid a split-screen phenomenon of the display effect of the screen after performing optical compensation on the display screen based on the original image.

First claim

What is claimed is:

1. An optical compensation method for a display screen, comprising:
determining a refresh time of a to-be-compensated screen;
determining an exposure time as N times the refresh time, wherein N is a positive integer;
controlling a camera to shoot the to-be-compensated screen based on the exposure time;
acquiring an original image of the to-be-compensated screen captured by the camera;
identifying and analyzing luminance of pixels at each position in the original image based on a compensation algorithm to determine luminance information of each pixel in the original image;
determining a compensation parameter based on the luminance information; and
adjusting display parameters based on the compensation parameter to equalize the luminance of the pixels at each position in the original image; or adjusting input grayscale values corresponding to pixels with lower luminance based on the compensation parameter to increase the luminance of the pixels with lower luminance, so as to equalize the luminance of the pixels at each position in the original image.

2. The method according to claim 1 , wherein determining the refresh time of the to-be-compensated screen comprises:
determining the refresh time based on a nominal refresh rate of the to-be-compensated screen.

3. The method according to claim 1 , wherein determining the refresh time of the to-be-compensated screen comprises:
acquiring a real-time refresh rate of the to-be-compensated screen in the case that the to-be-compensated screen is in a lit state; and
determining the refresh time based on the real-time refresh rate of the to-be-compensated screen.

4. The method according to claim 3 , wherein acquiring the real-time refresh rate of the to-be-compensated screen comprises:
determining the real-time refresh rate of the to-be-compensated screen based on a tearing effect (TE) signal output by a lighting jig.

5. The method according to claim 1 , wherein controlling the camera to shoot the to-be-compensated screen based on the exposure time comprises:
sending the exposure time to the camera such that the camera shoots the to-be-compensated screen based on the exposure time.

6. The method according to claim 1 , wherein controlling the camera to shoot the to-be-compensated screen based on the exposure time comprises:
sending a start instruction to the camera, wherein the start instruction is configured to instruct the camera to start shooting the to-be-compensated screen; and
sending a stop instruction to the camera, wherein the stop instruction is configured to instruct the camera to stop shooting the to-be-compensated screen;
wherein a time interval between the stop instruction and the start instruction is the exposure time.

7. An electronic device, comprising at least a processor and a memory storing a computer program, wherein the processor, when loading and running the computer program, is caused to execute instructions for:
determining a refresh time of a to-be-compensated screen;
determining an exposure time as N times the refresh time, wherein N is a positive integer;
controlling a camera to shoot the to-be-compensated screen based on the exposure time;
acquiring an original image of the to-be-compensated screen captured by the camera;
identifying and analyzing luminance of pixels at each position in the original image based on a compensation algorithm to determine luminance information of each pixel in the original image;
determining a compensation parameter based on the luminance information; and
adjusting display parameters based on the compensation parameter to equalize the luminance of the pixels at each position in the original image; or adjusting input grayscale values corresponding to pixels with lower luminance based on the compensation parameter to increase the luminance of the pixels with lower luminance, so as to equalize the luminance of the pixels at each position in the original image.

8. The electronic device according to claim 7 , wherein the processor, when loading and running the computer program, is further caused to execute an instruction for:
determining the refresh time based on a nominal refresh rate of the to-be-compensated screen.

9. The electronic device according to claim 7 , wherein the processor, when loading and running the computer program, is further caused to execute instructions for:
acquiring a real-time refresh rate of the to-be-compensated screen in the case that the to-be-compensated screen is in a lit state; and
determining the refresh time based on the real-time refresh rate of the to-be-compensated screen.

10. The electronic device according to claim 9 , wherein the processor, when loading and running the computer program, is further caused to execute an instruction for:
determining the real-time refresh rate of the to-be-compensated screen based on a tearing effect (TE) signal output by a lighting jig.

11. The electronic device according to claim 9 , wherein the processor, when loading and running the computer program, is further caused to execute an instruction for:
sending the exposure time to the camera such that the camera shoots the to-be-compensated screen based on the exposure time.

12. The electronic device according to claim 9 , wherein the processor, when loading and running the computer program, is further caused to execute instructions for:
sending a start instruction to the camera, wherein the start instruction is configured to instruct the camera to start shooting the to-be-compensated screen; and
sending a stop instruction to the camera, wherein the stop instruction is configured to instruct the camera to stop shooting the to-be-compensated screen;
wherein a time interval between the stop instruction and the start instruction is the exposure time.

13. The electronic device according to claim 9 , further comprising the camera; wherein
the camera is configured to acquire the original image by shooting the to-be-compensated screen under control of the processor.

14. A non-transitory computer-readable storage medium, storing a computer program, wherein the computer program, when loaded and run by a processor of an electronic device, causes the electronic device to execute instructions for:
determining a refresh time of a to-be-compensated screen;
determining an exposure time as N times the refresh time, wherein N is a positive integer;
controlling a camera to shoot the to-be-compensated screen based on the exposure time;
acquiring an original image of the to-be-compensated screen captured by the camera;
identifying and analyzing luminance of pixels at each position in the original image based on a compensation algorithm to determine luminance information of each pixel in the original image;
determining a compensation parameter based on the luminance information; and
adjusting display parameters based on the compensation parameter to equalize the luminance of the pixels at each position in the original image; or adjusting input grayscale values corresponding to pixels with lower luminance based on the compensation parameter to increase the luminance of the pixels with lower luminance, so as to equalize the luminance of the pixels at each position in the original image.

15. The non-transitory computer-readable storage medium according to claim 14 , wherein the computer program, when loaded and run by the processor of the electronic device, further causes the electronic device to execute an instruction for:
determining the refresh time based on a rated refresh rate of the to-be-compensated screen.

16. The non-transit

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Wang Yifei
• Jing Tan
• Liu Tianliang

Classifications

• H04N25/53

  Control of the integration time · CPC title

• H04N23/73 Primary

  by influencing the exposure time · CPC title

• G03B7/083 Primary

  for control of exposure time · CPC title

• G09G3/3208

  organic, e.g. using organic light-emitting diodes [OLED] · CPC title