FLC-VLSI smart-pixel SLMs for image processing

Michael J. O'Callaghan; David J. Ward; Stephen D. Gaalema; Lianhua Ji

doi:10.1117/12.326780

9 October 1998 FLC-VLSI smart-pixel SLMs for image processing

Michael J. O'Callaghan, David J. Ward, Stephen D. Gaalema, Lianhua Ji

Proceedings Volume 3466, Algorithms, Devices, and Systems for Optical Information Processing II; (1998) https://doi.org/10.1117/12.326780
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Smart-pixel spatial light modulators (SLMs) with optical inputs and outputs can offer a powerful combination of optical and electronic processing functions. Here we report on work in progress on an experimental FLC-VLSI SLM intended for use in the first Fourier plane of a joint transform correlator (JTC). The JTC SLM is designed to eliminate the unwanted autocorrelation term that normally exists in the JTC's output. One of the JTC's input images is modulated in phase or amplitude causing a modulation term to occur in the intensity of their joint transform. The smart-pixel SLM selectivley responds to the modulation term and displays the result as an image that will pass through the second and final Fourier transform lens (each pixel contains both a photodetector and an optical modulator).

Citation Download Citation

Michael J. O'Callaghan, David J. Ward, Stephen D. Gaalema, and Lianhua Ji "FLC-VLSI smart-pixel SLMs for image processing", Proc. SPIE 3466, Algorithms, Devices, and Systems for Optical Information Processing II, (9 October 1998); https://doi.org/10.1117/12.326780

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KEYWORDS

Spatial light modulators

Fourier transforms

Optically addressed spatial light modulators

Image filtering

Joint transforms

Modulation

Photodetectors

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