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An Analysis of Texture on Lunar Ground PhotosAn experiment was performed in an attempt to evaluate autocorrelation as an indicator of texture using five small patches representing varying distances on each of four lunar photos. Each patch was scanned at 50 micron increments on a 64-level gray scale. Several problems were involved in using the ordinary autocorrelation value but a rougher autocorrelation measure, the percentage of neighboring pairs (at a given lag distance) which fell within one graylevel of one another, yielded very encouraging results. As the distance to the feature decreased, initial slope of the graph of percentage against lag increased, and the general level of the graph decreased. When a crestline was present, the graph tended to continue to decrease at higher lags as well, rather than leveling off after the initial steep slope.
Document ID
19730006228
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Olson, J. M.
(Georgia Univ. Athens, GA, United States)
Date Acquired
August 7, 2013
Publication Date
September 1, 1972
Publication Information
Publication: Auburn Univ. The NASA-ASEE Summer Fac. Fellowship Program
Subject Category
Instrumentation And Photography
Accession Number
73N14955
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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