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A full field, 3-D velocimeter for microgravity crystallization experimentsThe programming and algorithms needed for implementing a full-field, 3-D velocimeter for laminar flow systems and the appropriate hardware to fully implement this ultimate system are discussed. It appears that imaging using a synched pair of video cameras and digitizer boards with synched rails for camera motion will provide a viable solution to the laminar tracking problem. The algorithms given here are simple, which should speed processing. On a heavily loaded VAXstation 3100 the particle identification can take 15 to 30 seconds, with the tracking taking less than one second. It seeems reasonable to assume that four image pairs can thus be acquired and analyzed in under one minute.
Document ID
19910013152
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Brodkey, Robert S. (Ohio State Univ. Columbus, OH, United States)
Russ, Keith M. (Ohio State Univ. Columbus, OH, United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1991
Subject Category
Materials Processing
Report/Patent Number
NASA-CR-188147
NAS 1.26:188147
Accession Number
91N22465
Funding Number(s)
PROJECT: RF PROJ. 767435/722039
CONTRACT_GRANT: NAG3-1039
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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