Patent ID: 8531579

Claim:
An image processing apparatus that corrects for chromatic aberration of magnification for image data that is obtained through an image-forming optical system having an image pickup lens and has color signals of a plurality of colors, comprising: an edge extraction unit configured to extract edge portions in the image data, and to determine, based on an extraction result, whether each of a plurality of areas included in the image data is a first area or a second area matching conditions prescribed in advance; a first calculation unit configured to calculate, by using a data corresponding to an area which is the first area, an amount of chromatic aberration of magnification in the first area as an amount of area chromatic aberration of magnification; a second calculation unit configured to calculate, based on lens design values relating to lenses provided in the image-forming optical system, chromatic aberration of magnification in each of the first and the second areas as an amount of lens chromatic aberration of magnification; and a determination unit configured to determine, by using the amount of area chromatic aberration of magnification and the amount of lens chromatic aberration of magnification relating to the first area, and the amount of lens chromatic aberration of magnification relating to the-second area, the amount of area chromatic aberration of magnification relating to the second area.