Patent ID: 7538798

Claim:
An image transforming system for transforming an image input from an imaging unit, which picks up a real image, into a virtual image viewed from a predetermined virtual viewpoint to output, comprising: a first storing unit which stores in a data table correspondences between pixels on the virtual image and points on a projection model, and a second storing unit which stores in another data table correspondences between the pixels on the virtual image and pixels on the real image, wherein the pixels on the real image and the pixels on the virtual image are mutually correlated via a point on the projection model; and a computing unit which calculates a pixel position of the real image corresponding to a three dimensional position on the projection model stored in the first storing unit, by using an input camera parameter, to obtain different correspondences between the pixels on the virtual image and the pixels on the real image, and rewrites contents recorded in the second storing unit based on the obtained different correspondences.