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Proceedings Paper

A New Technique For Pattern Recognition Using VFHF In White-Light Lensless Optical System
Author(s): Mu Guoguang; Wang Zhaoqi; Wang Kemei; Wang Xuming
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Paper Abstract

The advance in pattern recognition is achieved by the uses of Fresnel holographic filter (FHF) and extended source in a lensless correlator 1). This technique gains several advantages such as little effects of a displacement error in the alignment of the FRP and nonsensitivity to changes in scale and rotation of the detected object. In this paper, we present an improved technique by which the optical pattern recognition can be performed with white-light source and a volume Fresnel holographic filter (VFHF) in a lensless intensity correlator. The VFHF serves three functions: phase transformation, reconstructed wavelength selection as well as spatial filtering.

Paper Details

Date Published: 1 January 1987
PDF: 2 pages
Proc. SPIE 0813, Optics and the Information Age, (1 January 1987); doi: 10.1117/12.967308
Show Author Affiliations
Mu Guoguang, Nankai University (China)
Wang Zhaoqi, Nankai University (China)
Wang Kemei, Nankai University (China)
Wang Xuming, Nankai University (China)

Published in SPIE Proceedings Vol. 0813:
Optics and the Information Age

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