PROJECTIVE TRANSFORMATION PARAMETER ESTIMATION DEVICE, PROJECTIVE TRANSFORMATION PARAMETER ESTIMATION METHOD, AND COMPUTER-READABLE MEDIUM STORING PROGRAM THEREFOR

摘要

The present invention makes it possible to calculate a projective transformation parameter for guaranteeing deformation to a convex quadrilateral even if corresponding points include a partial error. A projective transformation parameter estimation device as in an embodiment is provided with: a corresponding point detection unit (1) for detecting corresponding information between two sets of input data; a quadric surface calculation unit (2) for adapting a quadric surface to the corresponding information with regard to one or both of the two sets of input data; and a projective transformation matrix calculation unit (3) for using the corresponding information to calculate a projective transformation parameter between the two sets of input data, with a constraint condition that the property of the quadric surface is retained after projective transformation.