US 12,333,683 B2
Image content extraction method and apparatus, terminal, and storage medium
Hao Li, Dongguan (CN)
Assigned to GUANGDONG GENIUS TECHNOLOGY CO., LTD., Dongguan (CN)
Filed by GUANGDONG GENIUS TECHNOLOGY CO., LTD., Dongguan (CN)
Filed on Dec. 27, 2023, as Appl. No. 18/397,979.
Application 18/397,979 is a continuation of application No. PCT/CN2021/119724, filed on Sep. 22, 2021.
Claims priority of application No. 202110938232.1 (CN), filed on Aug. 16, 2021.
Prior Publication US 2024/0127404 A1, Apr. 18, 2024
Int. Cl. G06T 5/50 (2006.01); G06T 5/20 (2006.01); G06T 5/70 (2024.01); G06T 5/73 (2024.01); G06T 5/90 (2024.01); G06V 10/60 (2022.01)
CPC G06T 5/50 (2013.01) [G06T 5/20 (2013.01); G06T 5/70 (2024.01); G06T 5/73 (2024.01); G06T 5/90 (2024.01); G06V 10/60 (2022.01); G06T 2207/20221 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An image content extraction method, comprising:
acquiring an image to be processed;
performing high-contrast retention on the image to be processed to obtain a high-contrast image of the image to be processed;
performing image fusion on the image to be processed and the high-contrast image to obtain a fused image;
performing linear light enhancement on the fused image to obtain a linear light-enhanced image; and
using first pixel points, having pixel values located within a preset pixel value range, in the linear light-enhanced image as an image content of the image to be processed;
wherein the performing linear light enhancement on the fused image to obtain a linear light-enhanced image comprises:
normalizing various third pixel points in the fused image to obtain first normalized pixel values corresponding to the various third pixel points;
determining linear light values of various fourth pixel points, wherein each of the various fourth pixel points is a third pixel point, having the first normalized pixel value located within a preset value range, among the various third pixel points; wherein the linear light value of each of the various fourth pixel points is a linear light value calculated on the basis of the first normalized pixel value of the fourth pixel point and a second normalized pixel value of a pixel point, which is located at a same position as the fourth pixel point, in the high-contrast image;
respectively adding the first normalized pixel values of the various fourth pixel points in the fused image with the linear light values corresponding to the various fourth pixel points to obtain third normalized pixel values respectively corresponding to the various fourth pixel points;
performing value verification on the third normalized pixel values respectively corresponding to the various fourth pixel points, and determining, according to a verification result of the value verification, fourth normalized pixel values respectively corresponding to the various fourth pixel points to obtain the linear light-enhanced image.