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Manpages pgmtextureSection: User Commands (1)Updated: 22 Aug 1991 Index Return to Main Contents NAMEpgmtexture - calculate textural features on a portable graymapSYNOPSISpgmtexture [-d d] [pgmfile]DESCRIPTIONReads a portable graymap as input. Calculates textural features based on spatial dependence matrices at 0, 45, 90, and 135 degrees for a distance d (default = 1). Textural features include:
Algorithm taken from:
BUGSThe program can run incredibly slow for large images (larger than 64 x 64) and command line options are limited. The method for finding (14) the maximal correlation coefficient, which requires finding the second largest eigenvalue of a matrix Q, does not always converge.REFERENCESIEEE Transactions on Systems, Man, and Cybertinetics, SMC-3(6):610-621.SEE ALSOpgm(5), pnmcut(1)AUTHORCopyright (C) 1991 by Texas Agricultural Experiment Station, employer for hire of James Darrell McCauley.
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