US 12,262,155 B2
Photoelectric conversion device, image processing method, imaging system, mobile body, and equipment
Jumpei Ashida, Kanagawa (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Nov. 22, 2022, as Appl. No. 18/057,870.
Claims priority of application No. 2021-198679 (JP), filed on Dec. 7, 2021.
Prior Publication US 2023/0179751 A1, Jun. 8, 2023
Int. Cl. H04N 23/60 (2023.01); H04N 9/64 (2023.01); H04N 23/67 (2023.01); H04N 25/42 (2023.01); H04N 25/75 (2023.01); H04N 25/77 (2023.01); H04N 23/84 (2023.01)
CPC H04N 9/646 (2013.01) [H04N 25/42 (2023.01); H04N 25/75 (2023.01); H04N 25/77 (2023.01); H04N 23/84 (2023.01)] 21 Claims
OG exemplary drawing
 
1. A photoelectric conversion device comprising:
a pixel unit including a plurality of pixels arranged in a matrix;
a driving unit that drives pixels in a first region by a first method and drives pixels in a second region by a second method;
a calculation unit that calculates a correction value based on pixel values read out from the first region and the second region; and
a correction unit that corrects an offset of a pixel value according to incident light based on the correction value,
wherein the calculation unit is configured to;
calculate an initial value of each of a plurality of first correction components based on a first pixel value read out from the first region,
update each of the plurality of the first correction components, based on a second pixel value read out from the second region and a second correction component, and
calculate the correction value using an updated first correction component of the plurality of updated first correction component and the second correction component.