Patent ID: 8953233
Filing Date: 2015-02-10
Classification: H04N

Abstract:
1. An image reading apparatus comprising: an image sensor including a light emitting portion, a photoelectric conversion portion in which a plurality of photoelectric transducers are arrayed in line, and a charge transfer portion which transfers charges stored in the photoelectric conversion portion, configured to output image data corresponding to a plurality of pixels; a first memory which stores, for a smear occurred at the charge transfer portion, reference smear amount data corresponding to each of color components of light from the light emitting portion and a correction target pixel; an image processing unit configured to, for image data outputted by the image sensor, obtain a correction amount for a brightness value based on a difference between brightness values of a first color component and a second color component and the reference smear amount data stored in the first memory, and correct a brightness value of the image data outputted by the image sensor based on the correction amount.