9 October 1998 Acousto-photorefractive holographic interferometric correlator for progressive pattern recognition using wavelet transforms
Author Affiliations +
Abstract
In this paper, we describe how a photorefractive holographic interferometer may be modified to implement the wavelet transform. By placing phase-only spatial light modulators, such as acousto-optic devices, in the optical path of the sample and reference beams, it is possible to perform correlations on the phase modulated signals and then convert them into intensity modulated signals for detection and signal processing. We discuss a potential application of this architecture known as progressive pattern recognition using the wavelet transform.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Pankaj K. Das, Pankaj K. Das, Casimer M. DeCusatis, Casimer M. DeCusatis, Barry L. Shoop, Barry L. Shoop, Daniel M. Litynski, Daniel M. Litynski, } "Acousto-photorefractive holographic interferometric correlator for progressive pattern recognition using wavelet transforms", Proc. SPIE 3470, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IV, (9 October 1998); doi: 10.1117/12.326864; https://doi.org/10.1117/12.326864
PROCEEDINGS
12 PAGES


SHARE
Back to Top