Patent Document ID: 20080310706
Application ID: 12056519
Patent Status: 0

Claim One:
1. A projective transformation convergence calculation method for performing a convergence calculation of updating values of given types of parameters of a projective transformation matrix between two cameras so as to converge a plane defined by the parameter values to a plane including a flat part of an object in images captured by the two cameras, while comparing a transformed image obtained by transforming an object image in the image captured by one of the two cameras by the projective transformation matrix with an object image in the image captured by the other camera in order to observe the flat part of the object in the images captured by the two cameras, wherein the initial values are set to values satisfying a limiting condition that should be satisfied by the initial values, where the limiting condition is that the plane defined by the initial values of the parameters in the convergence calculation is inclined with respect to an actual plane including the flat part of the object.