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The Angular Difference Function and its application to Image Registration
 

Summary: The Angular Difference Function and its application to
Image Registration
Y. Keller2, Y. Shkolnisky1 ,A. Averbuch1
1
School of Computer Science,
Tel Aviv University, Tel Aviv 69978, Israel
2
Math department
Yale University, Connecticut, USA
Phone: +1-203-432-4345
Email: yosi.keller@yale.edu
Submitted to the IEEE Transactions on PAMI
May 2004
Abstract
An important problem in image registration is to estimate large motions without prior
knowledge. In this paper we present the angular difference function (ADF) and demonstrate its
applicability to rotation estimation. The ADF of two functions is dened as the integral of their
spectral difference along the radial direction. It is efciently computed using the pseudo-polar
Fourier transform. Unlike other Fourier based registration schemes, the suggested approach
does not require any interpolation. Thus, it is more accurate and signicantly faster.

  

Source: Averbuch, Amir - School of Computer Science, Tel Aviv University

 

Collections: Computer Technologies and Information Sciences