Patent ID: 11861810
Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 3:
4. The method according to claim 3, wherein the calculating the dark channel value of each pixel according to the first pixel value of each pixel of the first image comprises:
obtaining a blue-light brightness value, a red-light brightness value, and a green-light brightness value respectively from the first pixel value of each pixel of the first image;
selecting a minimum brightness value from the blue-light brightness value, the red-light brightness value, and the green-light brightness value as a candidate brightness value of each pixel;
determining all pixels located in a preset pixel range as neighborhood pixels for each pixel; and
selecting a minimum candidate brightness value from candidate brightness values of the neighborhood pixels as the dark channel value of each pixel.