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Proceedings Paper

Median Filters - Optical Implementation Using Symbolic Substitution
Author(s): S. Antony; P. A. Ramamoorthy; T. A. Grogan
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Paper Abstract

An optical implementation of median filters for optical digital signal and image processing is proposed. The two properties of median filters, namely, the threshold decomposition and the stacking property are taken advantage of in our design of the median filter. The thresholder decomposes the incoming signal into a set of binary sequences by thresholding the input signal at various thresholding levels. These binary sequences are then applied to a set of binary median filters, the output of which are added together one sample at a time using the summing lens. Data is coded using light polarization and the binary median filters are implemented via symbolic substitution logic (SSL). The optical implementation offers an increased throughput by taking full advantage of the parallelism offered by SSL and the inherent massive parallelism of optics.

Paper Details

Date Published: 18 January 1988
PDF: 4 pages
Proc. SPIE 0829, Applications of Digital Image Processing X, (18 January 1988); doi: 10.1117/12.942119
Show Author Affiliations
S. Antony, University of Cincinnati (United States)
P. A. Ramamoorthy, University of Cincinnati (United States)
T. A. Grogan, University of Cincinnati (United States)


Published in SPIE Proceedings Vol. 0829:
Applications of Digital Image Processing X
Andrew G. Tescher, Editor(s)

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