Patent ID: 6516099
Filing Date: 2003-02-04
Classification: G06T,H04N

Abstract:
A method of producing signals defining a transformation between three images of an object by processing first input signals defining an affine transformation between a first pair of the images, second input signals defining a perspective transformation between the first pair of the images, third input signals defining an affine transformation between a second pair of the images, one of the three images being common to the first pair and the second pair, fourth input signals defining a perspective transformation between the second pair of the images, and fifth input signals defining features matched in all three images, the method comprising:(a) calculating a transformation between all three images using the first, third and fifth input signals; (b) calculating a transformation between all three images using the first, fourth and fifth input signals; (c) calculating a transformation between all three images using the second, third and fifth input signals; (d) calculating a transformation between all three images using the second, fourth and fifth input signals; and (e) testing the calculated transformations to determine an accuracy of each calculated transformation, and selecting one of the calculated transformations in dependence upon the accuracy thereof.