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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 35 — Dec. 11, 1999
  • pp: 7238–7244

Color pattern recognition in white-light joint transform correlation

Hongchen Zhai, Guoguang Mu, Jie Sun, Xiushan Zhu, Fulai Liu, Hui Kang, and Yuanling Zhan  »View Author Affiliations


Applied Optics, Vol. 38, Issue 35, pp. 7238-7244 (1999)
http://dx.doi.org/10.1364/AO.38.007238


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Abstract

We first discuss the restriction on the incoherent source and the color filters in a joint transform correlation (JTC) system for white-light color pattern recognition and then report on a novel, to our knowledge, solution of channeling in a white-light JTC system, using a tricolor grating to encode the color patterns in real time. The theoretical analyses and the experimental results show not only that the restriction on the experimental condition is relieved but also that parallel channeling of the power spectra of the encoded pattern is easily performed. In addition, the zero-order power spectrum also forms a useful channel for the shape-only correlation.

© 1999 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(070.2590) Fourier optics and signal processing : ABCD transforms
(070.4550) Fourier optics and signal processing : Correlators
(100.5010) Image processing : Pattern recognition
(330.1690) Vision, color, and visual optics : Color

History
Original Manuscript: February 26, 1999
Revised Manuscript: June 28, 1999
Published: December 10, 1999

Citation
Hongchen Zhai, Guoguang Mu, Jie Sun, Xiushan Zhu, Fulai Liu, Hui Kang, and Yuanling Zhan, "Color pattern recognition in white-light joint transform correlation," Appl. Opt. 38, 7238-7244 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-35-7238

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