To provide an apparatus and a method for image processing changing the direction and magnitude of edge enhancement according to the radial direction or the azimuth angle direction from the center of the screen, and correcting image deterioration produced in the meridional direction and the sagittal direction caused by the design and manufacturing reasons of an optical imaging system.

The image processing apparatus for processing signals from an imaging apparatus having an axisymmetric optical imaging system includes a means for obtaining a coordinate on an imaging plane having a cross point of the optical axis of the above optical imaging system and an imaging plane of the above imaging apparatus as an origin. Also, the image processing apparatus includes an edge enhancement means for performing edge enhancement of an edge perpendicular to the radius direction of the above coordinate, and an edge enhancement means for performing edge enhancement of an edge perpendicular to the azimuth angle direction of the above coordinate.