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Optical Engineering

Particle recognition using circular harmonic filters and a computer-generated holographic wedge detector
Author(s): Martin S. Marshall
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Paper Abstract

Two methods that exploit the capabilities of optical pattern recognition techniques are investigated for characterizing spherical and nonspherical particulates. Experimental data are presented demonstrating the ability of the circular harmonic filter and the computer-generated holographic wedge detector to distinguish three classes of particles. The three particle types represented include opaque spherical particles, fibrous particles and brass flakes. A simple figure-of-merit capable of discriminating between the three particle types is defined using the outputs from the computer-generated holographic wedge detector. The figure-ofmerit is independent of laser intensity and invariant with particle scale and rotation changes.

Paper Details

Date Published: 1 March 1996
PDF: 6 pages
Opt. Eng. 35(3) doi: 10.1117/1.600662
Published in: Optical Engineering Volume 35, Issue 3
Show Author Affiliations
Martin S. Marshall, U.S. Army Dugway Proving Ground (United States)

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