File:Automatic particle sizing from rocket motor holograms (IA automaticparticl00powe).pdf

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Original file ‎(1,170 × 1,610 pixels, file size: 3.66 MB, MIME type: application/pdf, 96 pages)

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Automatic particle sizing from rocket motor holograms   (Wikidata search (Cirrus search) Wikidata query (SPARQL)  Create new Wikidata item based on this file)
Author
Powers, John P.
image of artwork listed in title parameter on this page
Title
Automatic particle sizing from rocket motor holograms
Publisher
Monterey, California : Naval Postgraduate School
Description
Title from cover
"NPS-EC-91-003."
"December 1990."
AD A232 553
Includes bibliographical references (p. 75-76)
Microscopic particles within an optical hologram reconstruction have been successfully measured using an image digitizer and a PC/AT computer. The hologram was recorded during a test burn of some solid rocket fuel and captured a 2 in x 2 in volume of burning particles as they lift from the fuel surface during combustion. The computer processes the digitized images using feature identification algorithms and sizing in the feature's horizontal dimension, its vertical dimension and area. The operation of the algorithms have been validated against calibration objects. Statistical tests show that about 1,300 particles from several image frames are required to obtain a representative size distribution. Overlying speckle degrades the resolution of the image and can be reduced by a variety of techniques. The performance of these speckle-reduction techniques has been measured and compared in the areas of speckle reduction, loss of resolution, and processing time. Program sizes and processing times have been compared for both FORTRAN and C language versions of the processing program
aq/aq cc:9116 06/04/99

Subjects: PARTICLE SIZE.; SOLID ROCKET FUELS.; HOLOGRAMS.; IMAGE PROCESSING.
Language en_US
Publication date December 1990
publication_date QS:P577,+1990-12-00T00:00:00Z/10
Current location
IA Collections: navalpostgraduateschoollibrary; fedlink; americana
Accession number
automaticparticl00powe
Authority file  OCLC: 1040017456
Source
Internet Archive identifier: automaticparticl00powe
https://archive.org/download/automaticparticl00powe/automaticparticl00powe.pdf

Licensing

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Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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current11:02, 8 July 2020Thumbnail for version as of 11:02, 8 July 20201,170 × 1,610, 96 pages (3.66 MB)Fæ (talk | contribs)FEDLINK - United States Federal Collection automaticparticl00powe (User talk:Fæ/IA books#Fork8) (batch 1990-1992 #3324)

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