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Optical Engineering

An Approach For Automated Analysis Of Particle Holograms
Author(s): A. C. Stanton; H. J. Caulfield; G. W. Stewarrt
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Paper Abstract

Although the advantages of holography for particle measurements have long been recognized, practical application of the technique has awaited the development of automatic systems for image data analysis. An automated holographic diagnostic is ideally suited for the simultaneous measurement of drop-size distributions, trajectories, and velocities in combustion systems, for example, liquid fuel sprays. We propose an approach for automatic analysis of holograms of spherical droplets that is based on analysis of patterns in two or more nonimage planes. With this method, we have found that both the particle size and location can be recovered with an accuracy greater than that obtained by the time-consuming plane-by-plane search for sharpest focus. Thus, this simple approach represents a significant economy in image analysis and greatly enhances the prospects for development of automated systems for holographic particle measurement.

Paper Details

Date Published: 1 October 1984
PDF: 6 pages
Opt. Eng. 23(5) 235577 doi: 10.1117/12.7973340
Published in: Optical Engineering Volume 23, Issue 5
Show Author Affiliations
A. C. Stanton, Aerodyne Research, Inc. (United States)
H. J. Caulfield, Aerodyne Research, Inc. (United States)
G. W. Stewarrt, Aerodyne Research, Inc. (United States)

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