US 12,457,435 B2
Photoelectric conversion device, control method, and storage medium with image correction processing
Aihiko Numata, Tokyo (JP); and Kan Takaiwa, Tokyo (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Sep. 14, 2023, as Appl. No. 18/368,182.
Claims priority of application No. 2022-154574 (JP), filed on Sep. 28, 2022.
Prior Publication US 2024/0107199 A1, Mar. 28, 2024
Int. Cl. H04N 25/773 (2023.01); H04N 25/51 (2023.01)
CPC H04N 25/773 (2023.01) [H04N 25/51 (2023.01)] 17 Claims
OG exemplary drawing
 
1. A photoelectric conversion device comprising:
a photoelectric conversion element including an avalanche photodiode for photoelectrically converting an optical image; and
at least one processor or circuit configured to function as:
an image generation unit configured to generate a first image based on a signal acquired by the photoelectric conversion element;
an acquisition unit configured to acquire first characteristic information of the photoelectric conversion element; and
a correction processing unit configured to perform first correction processing on the first image by using the first characteristic information,
wherein, in the correction processing unit, a weighting coefficient of the first correction processing is made different according to a magnitude of a pixel signal in the first image, and
wherein the first correction processing includes processing of extracting a defective pixel in the first image, and the weighting coefficient of the first correction processing is changed between the defective pixel and other pixels.