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Proceedings Paper

Optical wavelet transforms using spatial light rebroadcasters
Author(s): Alastair D. McAulay; Junqing Wang; Jian Tian Li
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Paper Abstract

The advantages of a wavelet transform over a short time Fourier transform are explained using 1-D synthetic data in a computer simulation. An optical set up is described in which an electronic analog sensor signal drives an acoustooptic cell that controls the intensity of an Argon laser. A mechanical scanner writes the information as a line onto a spatial light rebroadcaster (SLR) module containing an optical liquid crystal light valve. A lens system expands the line into a 2-D array. A wavelet transform filter is placed in the Fourier transform plane of a 4f correlator. An optical demonstration shows the formation of a wavelet transform and an inverse wavelet transform to reconstruct the original waveform.

Paper Details

Date Published: 12 January 1993
PDF: 8 pages
Proc. SPIE 1772, Optical Information Processing Systems and Architectures IV, (12 January 1993); doi: 10.1117/12.140912
Show Author Affiliations
Alastair D. McAulay, Wright State Univ. (United States)
Junqing Wang, Wright State Univ. (United States)
Jian Tian Li, Wright State Univ. (United States)

Published in SPIE Proceedings Vol. 1772:
Optical Information Processing Systems and Architectures IV
Bahram Javidi, Editor(s)

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