Power cepstrum and spectrum techniques applied to image registration

Dah Jye Lee, Thomas F. Krile, Sunanda Mitra

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

The use of power cepstrum analysis in image registration is explored. Rotational shifts and translational shifts are corrected separately. The technique involves two main ideas. First, after preprocessing to remove extraneous information and information which could result in false registration parameters, a rotational shift is changed into a translational shift by using the shift-invariant property of the power spectrum. Second, power cepstrum analysis is used to correct the translational shift. Because of the introduction of these ideas, this new algorithm can work very fast and accurately compared to conventional correlation techniques. This registration technique is applied to sequential fundus images with potential application in detecting changes in fundus anomalies.

Original languageEnglish
Pages (from-to)1099-1106
Number of pages8
JournalApplied Optics
Volume27
Issue number6
DOIs
StatePublished - Mar 15 1988

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