Image processing method and electronic device

Patent metadata

Field	Value
Publication number	US-12423885-B2
Application number	US-202217924305-A
Country	US
Kind code	B2
Filing date	May 7, 2022
Priority date	Aug 10, 2021
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

The image processing method includes: displaying a first screen, where the first screen includes a first control; detecting a first operation on the first control; determining a first mapping in a three-dimensional lookup table in response to the first operation, where the first mapping is corresponding to the first control; converting a to-be-processed image in a first color space into a first image in a second color space, where the to-be-processed image is an image obtained in the first color space; processing the first image according to the first mapping to obtain a second image; and converting the second image in the second color space into a third image in the first color space.

First claim

What is claimed is:

1. An image processing method, applied to an electronic device, wherein the image processing method comprises:
displaying a first screen, wherein the first screen comprises a first control; when the first screen is a shooting screen, and a preview box including different image patterns displayed on the shooting screen, the first control is a control for indicating an image pattern in the preview box, wherein when the first screen is a setting screen, the first control is an AI movie color grading control;
detecting a first operation on the first control;
determining a first mapping in a three-dimensional lookup table in response to the first operation, wherein the first mapping is corresponding to the first control;
converting a to-be-processed image in a first color space into a first image in a second color space, wherein the to-be-processed image is an image obtained in the first color space, the first color space is a YUV color space, and a second color space is an RGB color space;
processing the first image in aspect of hue, saturation, and brightness according to the first mapping to obtain a second image; and
converting the second image in the second color space into a third image in the first color space.

2. The image processing method according to claim 1 , wherein the electronic device comprises a pre-stored three-dimensional lookup table, and the determining a first mapping in a three-dimensional lookup table comprises:
determining, according to an identifier of the first mapping, the first mapping from the pre-stored three-dimensional lookup table.

3. The image processing method according to claim 1 , wherein the converting a to-be-processed image in a first color space into a first image in a second color space comprises:
performing first processing on the to-be-processed image to obtain a first-processed image, wherein the first processing is adjusting an image width of the to-be-processed image; and
converting the first-processed image into the first image in the second color space.

4. The image processing method according to claim 1 , wherein the processing the first image according to the first mapping to obtain a second image comprises:
processing the first image according to the first mapping and a tetrahedron interpolation algorithm to obtain the second image.

5. The image processing method according to claim 4 , wherein the processing the first image according to the first mapping and a tetrahedron interpolation algorithm to obtain the second image comprises:
mapping each pixel in the first image according to the first mapping and the tetrahedron interpolation algorithm to obtain a target pixel; and
obtaining the second image based on the target pixels.

6. The image processing method according to claim 1 , further comprising:
performing second processing on the third image, wherein the second processing is adjusting an image width of the third image to be the same as the image width of the to-be-processed image.

7. The image processing method according to claim 1 , wherein the first control is a control that is used to indicate the first mapping in the three-dimensional lookup table.

8. The image processing method according to claim 1 , wherein the first control is a control that is used to indicate automatic identification of the first mapping in the three-dimensional lookup table.

9. The image processing method according to claim 1 , wherein the electronic device comprises a first processor and a second processor; wherein
the first processor is configured to obtain the to-be-processed image, and the second processor is configured to: convert the to-be-processed image in the first color space into the first image in the second color space, process the first image according to the first mapping to obtain the second image, and convert the second image in the second color space into the third image in the first color space.

10. The image processing method according to claim 9 , wherein the first processor is an image signal processor, and the second processor is a digital signal processor or a graphics processing unit.

11. An electronic device, for image processing, comprising:
at least one processor; and
one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to cause the electronic device to:
display a first screen, wherein the first screen comprises a first control; when the first screen is a shooting screen, a preview box including different image patterns displayed on the shooting screen, the first control is a control for indicating an image pattern in the preview box, wherein when the first screen is a setting screen, the first control is an AI movie color grading control;
detect a first operation on the first control;
determine a first mapping in a three-dimensional lookup table in response to the first operation, wherein the first mapping is corresponding to the first control;
convert a to-be-processed image in a first color space into a first image in a second color space, wherein the to-be-processed image is an image obtained in the first color space, the first color space is a YUV color space and a second color space is an RGB color space;
process the first image in aspect of hue, saturation, and brightness according to the first mapping to obtain a second image; and
convert the second image in the second color space into a third image in the first color space.

12. The electronic device according to claim 11 , wherein the electronic device comprises a pre-stored three-dimensional lookup table, and the determine a first mapping in a three-dimensional lookup table comprises:
determine, according to an identifier of the first mapping, the first mapping from the pre-stored three-dimensional lookup table.

13. The electronic device according to claim 11 , wherein the convert a to-be-processed image in a first color space into a first image in a second color space comprises:
perform first processing on the to-be-processed image to obtain a first-processed image, wherein the first processing is adjusting an image width of the to-be-processed image; and
convert the first-processed image into the first image in the second color space.

14. The electronic device according to claim 11 , wherein the process the first image according to the first mapping to obtain a second image comprises:
process the first image according to the first mapping and a tetrahedron interpolation algorithm to obtain the second image.

15. The electronic device according to claim 14 , wherein the process the first image according to the first mapping and a tetrahedron interpolation algorithm to obtain the second image comprises:
map each pixel in the first image according to the first mapping and the tetrahedron interpolation algorithm to obtain a target pixel; and
obtain the second image based on the target pixels.

16. The electronic device according to claim 11 , wherein the programming instructions, when executed by the at least one processor, cause the electronic device to:
perform second processing on the third image, wherein the second processing is adjusting an image width of the third image to be the same as the image width of the to-be-processed image.

17. The electronic device according to claim 11 , wherein the first control is a control that is used to indicate the first mapping in the three-dimensional lookup table.

18. The electronic device according to claim 11 , wherein the first control is a control that

Assignees

• Honor Device Co Ltd

Inventors

• Jin Meng
• Shao Tao
• Xi Dongmiao
• Su Junqin
• Qian Yanlin

Classifications

• G06T11/10 Primary

  Texturing; Colouring; Generation of textures or colours (retouching, inpainting or scratch removal G06T5/77) · CPC title

• G06F3/0481

  based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance · CPC title

• H04N9/68

  for controlling the amplitude of colour signals, e.g. automatic chroma control circuits (H04N9/71, H04N9/73 take precedence; camera processing pipelines for controlling the colour saturation of colour signals H04N23/86) · CPC title

• H04N9/67

  for matrixing (camera processing pipelines for matrixing of colour signals H04N23/85) · CPC title

• G06F3/04845

  for image manipulation, e.g. dragging, rotation, expansion or change of colour · CPC title