High-Accuracy Subpixel Image Registration Based on Phase-Only Correlation

Kenji Takita, Takafumi Aoki, Yoshifumi Sasaki, Tatsuo Higuchi, Koji Kobayashi

Research output: Contribution to journalArticlepeer-review

273 Citations (Scopus)

Abstract

This paper presents a high-accuracy image registration technique using a Phase-Only Correlation (POC) function. Conventional techniques of phase-based image registration employ heuristic methods in estimating the location of the correlation peak, which corresponds to image displacement. This paper proposes a technique to improve registration performance by fitting the closed-form analytical model of the correlation peak to actual two-dimensional numerical data. This method can also be extended to a spectrum weighting POC technique, where we modify cross-phase spectrum with some weighting functions to enhance registration accuracy. The proposed method makes possible to estimate image displacements with 1/100-pixel accuracy.

Original languageEnglish
Pages (from-to)1925-1934
Number of pages10
JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
VolumeE86-A
Issue number8
Publication statusPublished - 2003 Aug

Keywords

  • Image matching
  • Image registration
  • Phase correlation
  • Phase-only correlation
  • Subpixel registration

ASJC Scopus subject areas

  • Signal Processing
  • Computer Graphics and Computer-Aided Design
  • Electrical and Electronic Engineering
  • Applied Mathematics

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