Patent ID: 9413996
Filing Date: 2016-08-09
CPC Classification: H04N

Claim Text:
1. An image processing apparatus comprising: at least one processor and a memory cooperatively coupled to function as: an obtaining unit that obtains an image signal of an image pickup element having a pupil divider that restricts light of an optical image of an object arriving at each pixel of the image pickup element to light from a specific pupil area of a photographing lens that photographs the object; a memory unit that stores information of a pixel defect of the image pickup element; an image shift unit that determines a shift amount of the image signal of the photographed object corresponding to an image re-formation plane for every pupil area, to shift the image signal on the basis of the image re-formation plane; a defect correction unit that corrects an image signal of a defective pixel using the shifted image signal of a pixel other than the defective pixel obtained by the image shift unit, in accordance with the information of the pixel defect, wherein the defect correction unit calculates a correlation of a position and an angle using the image signal obtained from the image shift unit, and corrects the image signal of the pixel defect using the image signal obtained from the image shift unit on the basis of the calculated correlation; and an image re-formation unit that re-forms an image corresponding to the image re-formation plane from the image signal that is corrected by the defect correction unit.