Publication:
Implementation of three speckle reduction filters for solid propellant combustion holograms

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Authors
Edwards, Thomas D.
Subjects
speckle
speckle index
hologram
laser
image processing
ITEX/PC
Advisors
Powers, John P.
Date of Issue
1986-12
Date
December 1986
Publisher
Language
en_US
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.
Type
Thesis
Description
Series/Report No
Department
Electrical and Computer Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Air Force Rocket Propulsion Lab, F04611-86-X-0008
Funder
Air Force Rocket Propulsion Lab, F04611-86-X-0008
Format
56 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
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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