Image Registration using Multiresolution Frequency Domain Correlation
Sven Krüger, Andrew D. Calway · 1998
This paper describes a correlation based image registration method which is able to register images related by a single global affine transformation or by a transformation field which is approximately piecewise affine. The method has two key elements: an affine estimator, which derives estimates of the six affine parameters relating two image regions by aligning their Fourier spectra prior to correlating; and a multiresolution search process, which determines the global transformation field in terms of a set of local affine estimates at appropriate spatial resolutions. The method is computationally efficient and performs well for a range of different images and transformations. 1 Introduction Image registration is an important area of Computer Vision and Image Processing. It involves determining the transformation which will map pixels in one image to their corresponding or matching pixels in one or more related images, where the latter are different views and/or different ti...