US 12,452,554 B2
System, method, electronic device, and computer-readable storage medium for shading correction in image acquisition
Anzhou Hu, Wuhan (CN); Louise Law, San Jose, CA (US); Chao Wang, Shanghai (CN); and Donghui Wu, San Jose, CA (US)
Assigned to Black Sesame Technologies (Shenzhen) Co., Ltd., Shenzhen (CN)
Filed by Black Sesame Technologies (Shenzhen) Co., Ltd., Shenzhen (CN)
Filed on Aug. 24, 2023, as Appl. No. 18/237,821.
Claims priority of application No. 202211024160.0 (CN), filed on Aug. 24, 2022.
Prior Publication US 2024/0073554 A1, Feb. 29, 2024
Int. Cl. H04N 25/61 (2023.01); H04N 23/72 (2023.01); H04N 23/74 (2023.01); H04N 23/75 (2023.01); H04N 23/76 (2023.01)
CPC H04N 25/61 (2023.01) [H04N 23/72 (2023.01); H04N 23/74 (2023.01); H04N 23/75 (2023.01); H04N 23/76 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A system for acquiring an image, comprising a light source, a correction reference, an illumination measurement device, and an image acquisition device to be corrected,
wherein the illumination measurement device is configured to measure luminous intensity in different regions on the correction reference,
wherein the light source is configured to adjust a positional relationship thereof relative to the correction reference and a direction in which the light source illuminates the correction reference based on the measured luminous intensity, so that the measured luminous intensity in the different regions on the correction reference meets a predetermined uniformity condition; and
wherein the image acquisition device is configured to acquire at least one image of the correction reference responsive to the uniformity condition being met, and the at least one image is used to obtain a correction image which is used to perform lens shading correction on the image acquisition device.