Patent ID: 11900571
Assignee: CANON KABUSHIKI KAISHA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 18:
19. An imaging device comprising:
an imaging element;
an optical system configured to form an image on an imaging surface of the imaging element and has a characteristic in which an image formation magnification differs depending on a position in the imaging surface; and
at least one processor or circuit configured to function as
a demosaic unit configured to generate color image data of at least two colors from the data output from the imaging element, and
a distortion correction unit configured to correct distortion of the color image data of at least two colors generated by the demosaic unit,

wherein the distortion correction unit includes:
an image data accumulation unit configured to accumulate the color image data of at least two colors generated by the demosaic unit,
an output region selection unit configured to select a region of image data to be output at a predetermined resolution,
an optical characteristic information storage unit configured to store optical characteristics of the optical system,
a read region calculation unit configured to acquire optical characteristic information from the optical characteristic information storage unit based on the information input from the output region selection unit and to calculate a region to be read from the image data accumulation portion,
an image data reading unit configured to read image data from the image data accumulation unit based on the information input from the read region calculation unit, and
an interpolation processing unit configured to perform an interpolation process by using image data output from the image data reading unit.