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Implementation of three speckle reduction filters for solid propellant combustion holograms

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Author
Edwards, Thomas D.
Date
1986-12
Advisor
Powers, John P.
Second Reader
Netzer, David
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Abstract
Speckle noise appears when a diffuse light hologram of a particle field is reconstructed with a laser. The speckle must be reduced so that particles of interest may be counted and sized. This thesis describes speckle and a figure of merit known as the speckle index. Three speckle reduction filters suggested by work in the area of synthetic aperture radars were implemented, discussed and compared. An IBM AT personal computer with Itex/PC image processing software was used for the comparison. The geometric filter performed best overall, but may not be superior in every circumstance.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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http://hdl.handle.net/10945/21910
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  • 1. Thesis and Dissertation Collection, all items

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