US 12,273,637 B2
Information processing apparatus, information processing method, image sensor, and storage medium
Yasuo Fukuda, Tokyo (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jun. 9, 2022, as Appl. No. 17/836,003.
Claims priority of application No. 2021-099683 (JP), filed on Jun. 15, 2021.
Prior Publication US 2022/0400223 A1, Dec. 15, 2022
Int. Cl. H04N 25/633 (2023.01); H04N 25/50 (2023.01)
CPC H04N 25/633 (2023.01) [H04N 25/50 (2023.01)] 10 Claims
OG exemplary drawing
 
1. An information processing apparatus for estimating dark current component values contained in pixel values to be output from an image sensor, wherein
an image capturing surface of the image sensor including a plurality of effective pixel regions and a light-shielded region for which exposure conditions are individually settable, and
the information processing apparatus comprises:
at least one circuit configured to function as:
a restriction unit configured to restrict setting of a second exposure condition which is used for capturing of one of the plurality of effective pixel regions and a third exposure condition which is used for capturing of an other of the plurality of effective pixel regions so that the second exposure condition and the third exposure condition become close to a first exposure condition which is used for obtaining a dark current component from the light-shielded region in a case that a temperature of the image sensor is higher than a predetermined temperature; and
an estimation unit configured to estimate one of the dark current component values contained in the pixel value which is output from one of the plurality of effective pixel regions by capturing with the second exposure condition, based on a conversion ratio of the first exposure condition to the second exposure condition, and
to estimate an other of the dark current component values contained in the pixel value which is output from the other of the plurality of effective pixel regions by capturing with the third exposure condition which is different from the first exposure condition, based on a conversion ratio of the first exposure condition to the third exposure condition.