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dc.contributor.authorPowers, John P.
dc.date1990-12
dc.date.accessioned2013-02-27T23:22:54Z
dc.date.available2013-02-27T23:22:54Z
dc.date.issued1990-12
dc.identifier.urihttp://hdl.handle.net/10945/28687
dc.description.abstractMicroscopic 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 programen_US
dc.description.sponsorshipAir Force Astronautics Laboratory, Edwards AFB, CAen_US
dc.description.urihttp://archive.org/details/automaticparticl00powe
dc.format.extentx, 77 p. : ill. ; 28 cm.en_US
dc.language.isoen_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.subject.lcshPARTICLE SIZEen_US
dc.titleAutomatic particle sizing from rocket motor hologramsen_US
dc.typeTechnical Reporten_US
dc.contributor.corporateNaval Postgraduate School (U.S.).
dc.contributor.departmentElectrical and Computer Engineering.en_US
dc.subject.authorParticle sizingen_US
dc.subject.authorImage processingen_US
dc.subject.authorImage digitizationen_US
dc.description.funderMIPR #: F04611-90-X-0057en_US
dc.description.recognitionNAen_US
dc.identifier.oclcocn640935074
dc.identifier.npsreportNPS-EC-91-003
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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