Patent ID: 8040385

Claim:
An image pickup apparatus which outputs an image of an object, comprising: an image sensing device which includes a photoelectric conversion element which photoelectrically converts an optical image to acquire image data, and a read control unit which thins out pixels, as needed, and reads the image data acquired by the photoelectric conversion element; a region setting unit which sets a region of an output image of the image sensing device; a read rule selection unit which selects a pixel thinning read rule of the read control unit in accordance with the region set by the region setting unit; and a distortion correction unit which corrects distortion of the image data read from the photoelectric conversion element by the read control unit, the distortion correction unit having a filter processing unit which executes filter processing for the image data read from the photoelectric conversion element on the basis of the pixel thinning read rule selected by the read rule selection unit.