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Application of an electronic image analyzer to dimensional measurements from neutron radiographsMeans of obtaining improved dimensional measurements from neutron radiographs of nuclear fuel elements are discussed. The use of video-electronic image analysis relative to edge definition in radiographic images is described. Based on this study, an edge definition criterion is proposed for overcoming image unsharpness effects in taking accurate diametral measurements from radiographs. An electronic density slicing method for automatic edge definition is described. Results of measurements made with video micrometry are compared with scanning microdensitometer and micrometric physical measurements. An image quality indicator for estimating photographic and geometric unsharpness is described.
Document ID
19730011768
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Vary, A. (NASA Lewis Research Center Cleveland, OH, United States)
Bowles, K. J. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 2, 2013
Publication Date
March 1, 1973
Subject Category
Instrumentation And Photography
Report/Patent Number
NASA-TM-X-68200
Report Number: NASA-TM-X-68200
Meeting Information
Meeting: Spring Meeting of the Am. Soc. for Nondestructive Testing
Location: Los Angeles, CA
Country: United States
Start Date: March 12, 1073
End Date: March 15, 1073
Accession Number
73N20495
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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