A projection-based extension to phase correlation image alignment

Y. Keller, A. Averbuch

Research output: Contribution to journalArticlepeer-review

Abstract

Phase-correlation (PC) is a computationally efficient scheme for estimating 2-D and 3-D translations. We present a masking operator that significantly improves the accuracy and robustness of the PC scheme. The masking projects the estimated correlation function on the space of correlation functions that result from a certain range of translations, while rejecting components that are unrelated to the estimated motion. Thus, the registration accuracy is improved by an order of magnitude, especially when registering noisy images and volumes. The scheme is also shown to improve the registration of rotated images in the Fourier domain.

Original languageEnglish
Pages (from-to)124-133
Number of pages10
JournalSignal Processing
Volume87
Issue number1
DOIs
StatePublished - Jan 2007

Keywords

  • Fourier based
  • Image registration
  • Phase correlation
  • Robust alignment

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