Affine Registration of 2D Point Pattern Image

This paper presents a novel algorithm for the problem of affine point pattern matching. After using a Whitening transformation, the two point patterns related through an affine transform are respectively mapped to the point patterns related through a rotation transformation. The novelty of the proposed algorithm is by introducing a new distance metric and a distortion degree of the affine transformation into the objective function to make it smooth and have relatively less local minimum. Combined with the newly proposed robust affine invariant, the objective function can be solved rapidly by random bisearching algorithm. The experimental results show that the proposed algorithm is capable of affine point matching with higher speed and precision.