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Rotation invariant color pattern recognition by use of a three-dimensional Fourier transform.

Authors
  • Gualdrón, Oscar
  • Nicolás, Josep
  • Campos, Juan
  • Yzuel, Maria J
Type
Published Article
Journal
Applied optics
Publication Date
Mar 10, 2003
Volume
42
Issue
8
Pages
1434–1440
Identifiers
PMID: 12645979
Source
Medline
License
Unknown

Abstract

Recently, the use of three-dimensional correlation for multichannel pattern recognition has been introduced. In this work we propose the use of circular harmonic components with this new technique to obtain invariance under target rotations. The differences between this method and the previous use of circular harmonic filters for multichannel images are discussed. Also the problem of determining the proper center is studied and, to our knowledge, a new and more understandable criterion to locate it is introduced. Some simulation results to verify the successful operation of the method are included.

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