Selective discrimination capability in optical pattern recognition using available SLMs

Elisabet Perez; Maria Sagrario Millan Garcia-Verela; Katarzyna Chalasinska-Macukow; Jesus Maria Garcia

doi:10.1117/12.451138

26 December 2001 Selective discrimination capability in optical pattern recognition using available SLMs

Elisabet Perez, Maria Sagrario Millan Garcia-Verela, Katarzyna Chalasinska-Macukow, Jesus Maria Garcia

Proceedings Volume 4435, Wave Optics and VLSI Photonic Devices for Information Processing; (2001) https://doi.org/10.1117/12.451138
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

Optical correlation for pattern recognition with selective and adjustable discrimination capability is based on the Dual Nonlinear Correlation (DNC) algorithm and on a two-step Joint Transform Correlator (JTC) architecture. The DNC encompasses nonlinear power-law processing operating independently on the spectra of the input image and the reference target. But the eventual capabilities of the system strongly depend on some experimental conditions such as quantization, gray-level dynamic range, saturation and other technical characteristics of both the camera and the spatial light modulator used in the JTC. In this work we explore these capabilities for three available modulators (Epson and two different CRLs) acting in both the input and the modified joint power spectra planes for the first and second steps of the JTC, respectively.

Citation Download Citation

Elisabet Perez, Maria Sagrario Millan Garcia-Verela, Katarzyna Chalasinska-Macukow, and Jesus Maria Garcia "Selective discrimination capability in optical pattern recognition using available SLMs", Proc. SPIE 4435, Wave Optics and VLSI Photonic Devices for Information Processing, (26 December 2001); https://doi.org/10.1117/12.451138

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KEYWORDS

Spatial light modulators

Optical correlators

CCD cameras

Optical pattern recognition

Nonlinear filtering

Binary data

Cameras

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