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Optical Engineering

Realization of an α-trimmed mean filter on the threshold decomposition architecture
Author(s): Daryoush H. Razi; Chee-Hung Henry Chu
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Paper Abstract

The realization of the α-trimmed mean filter on the threshold decomposition architecture is described. The threshold decomposition architecture is developed for facilitating realization of nonlinear, order-statistic filters. In this architecture, an input sequence is thresholded at different levels to form a number of binary sequences. The filter output is formed by combining the decision results made at various levels; at each level it is determined whether the signal should be above the associated threshold level. The decision rule used is the distinguishing feature of an individual filter; the current implementation of the α-trimmed mean filter is based on using a threshold logic function as the decision rule, thus allowing the decision rule to output multiple values. The statistical properties and performance of the a-trimmed mean filter are analyzed on the basis of this realization.

Paper Details

Date Published: 1 September 1995
PDF: 5 pages
Opt. Eng. 34(9) doi: 10.1117/12.210760
Published in: Optical Engineering Volume 34, Issue 9
Show Author Affiliations
Daryoush H. Razi, Univ. of Southwestern Louisiana (United States)
Chee-Hung Henry Chu, Univ. of Southwestern Louisiana (United States)


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