A New Technique For Pattern Recognition Using VFHF In White-Light Lensless Optical System

Mu Guoguang; Wang Zhaoqi; Wang Kemei; Wang Xuming

doi:10.1117/12.967308

1 January 1987 A New Technique For Pattern Recognition Using VFHF In White-Light Lensless Optical System

Mu Guoguang, Wang Zhaoqi, Wang Kemei, Wang Xuming

Proceedings Volume 0813, Optics and the Information Age; (1987) https://doi.org/10.1117/12.967308
Event: 14th Congress of the International Commission for Optics, 1987, Quebec, Canada

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.

Citation Download Citation

Mu Guoguang, Wang Zhaoqi, Wang Kemei, and Wang Xuming "A New Technique For Pattern Recognition Using VFHF In White-Light Lensless Optical System", Proc. SPIE 0813, Optics and the Information Age, (1 January 1987); https://doi.org/10.1117/12.967308

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