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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 35 — Dec. 10, 2000
  • pp: 6641–6648

Invariant pattern recognition based on centroids

Shoude Chang, Henri H. Arsenault, Pascuala Garcia-Martinez, and Chander P. Grover  »View Author Affiliations


Applied Optics, Vol. 39, Issue 35, pp. 6641-6648 (2000)
http://dx.doi.org/10.1364/AO.39.006641


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Abstract

A new method for pattern recognition that is invariant under changes of position, orientation, intensity, and scale is presented. The centroids of objects provide unique points that are related to the energy distribution. For obtaining more such unique points a conformal transform can be used to rearrange the energy distribution of the object. By means of the conformal transform many different centroids can be produced from the same object. A useful pattern-recognition and object-registration method that yields a position-, rotation-, intensity-, and scale-invariant feature vector based on these centroids can be created.

© 2000 Optical Society of America

OCIS Codes
(070.6110) Fourier optics and signal processing : Spatial filtering
(100.4550) Image processing : Correlators
(100.5010) Image processing : Pattern recognition
(110.2960) Imaging systems : Image analysis
(200.4740) Optics in computing : Optical processing

History
Original Manuscript: February 22, 2000
Revised Manuscript: August 22, 2000
Published: December 10, 2000

Citation
Shoude Chang, Henri H. Arsenault, Pascuala Garcia-Martinez, and Chander P. Grover, "Invariant pattern recognition based on centroids," Appl. Opt. 39, 6641-6648 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-35-6641

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