US 12,260,519 B2
Saturation enhancement method and device, and computer readable storage medium
Xiaodong Zhang, Guangdong (CN)
Assigned to SHENZHEN TCL NEW TECHNOLOGY CO., LTD., Guangdong (CN)
Appl. No. 17/754,256
Filed by SHENZHEN TCL NEW TECHNOLOGY CO., LTD., Guangdong (CN)
PCT Filed Aug. 27, 2020, PCT No. PCT/CN2020/111630
§ 371(c)(1), (2) Date Mar. 29, 2022,
PCT Pub. No. WO2021/063135, PCT Pub. Date Apr. 8, 2021.
Claims priority of application No. 201910948636.1 (CN), filed on Sep. 30, 2019.
Prior Publication US 2022/0358623 A1, Nov. 10, 2022
Int. Cl. G06T 5/00 (2024.01)
CPC G06T 5/00 (2013.01) [G06T 2207/10024 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A saturation enhancement method performed by a display device comprising a processor, wherein the saturation enhancement method comprises:
converting, by the processor of the display device, a color space of an input image to obtain color data of color conversion;
expanding, by the processor of the display device, color saturation on the color data of the color conversion to obtain an expanded color data;
performing, by the processor of the display device, a gamma-based preprocess on the expanded color data to obtain a processed color data;
wherein the step of converting the color space of the input image to obtain the color data of the color conversion comprises:
acquiring, by the processor of the display device, RGB data of each pixel in an RGB space of the input image;
normalizing, by the processor of the display device, the RGB data and performing, by the processor of the display device, gamma correction on a normalized RGB data to obtain linear RGB data of the input image; and
converting, by the processor of the display device, the linear RGB data of the input image into LCH data in an LCH space;
wherein the step of converting the linear RGB data of the input image into the LCH data in the LCH space comprises:
converting, by the processor of the display device, the linear RGB data of the input image into XYZ data in an XYZ space;
converting, by the processor of the display device, the XYZ data into Luv data in a Luv space;
converting, by the processor of the display device, the Luv data into the LCH data in the LCH space.