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Phase Correlation Method for ITK

Bican, Jakub
Institute of Information Theory and Automation, Academy of Sciences of the Czech Republic
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Published in The Insight Journal - 2006 July - December.
Submitted by Jakub Bican on 2006-12-14T16:39:20Z.

Phase Correlation Method (PCM or SPOMF - Symmetric Phase-Only Matched Filter) is a well known image registration method, that exploits Fourier Shift Theorem property of Fourier Transform. Even though it is limited to estimate only shifts between two images, it is very useful as it is robust to frequency-dependent noise and initial image overlap area. Furthermore, it evaluates very fast by way of two forward FFTs, one complex image division and one inverse FFT.