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Pgmtexture User Manual(0) Pgmtexture User Manual(0)
NAME
pgmtexture - calculate textural features on a PGM image
SYNOPSIS
pgmtexture
[-d d]
[pgmfile]
DESCRIPTION
This program is part of Netpbm(1).
pgmtexture reads a PGM image as input and calculates textural features based on spatial
dependence matrices at 0, 45, 90, and 135 degrees for a distance d (default = 1).
Textural features include:
o Angular Second Moment
o Contrast
o Correlation
o Variance
o Inverse Difference Moment
o Sum Average
o Sum Variance
o Sum Entropy
o Entropy
o Difference Variance
o Difference Entropy
o Information Measures of Correlation
o Maximal Correlation Coefficient
Algorithm taken from: Haralick, R.M., K. Shanmugam, and I. Dinstein. 1973. Textural fea-
tures for image classification. IEEE Transactions on Systems, Man, and Cybertinetics,
SMC-3(6):610-621.
LIMITATIONS
The method for finding the Maximal Correlation Coefficient, which requires finding the
second largest eigenvalue of a matrix Q, does not always converge.
SEE ALSO
pgm(1), pamsharpness(1), pamsharpmap(1), pgmedge(1), pgmminkowski(1)
AUTHOR
Copyright (C) 1991 by Texas Agricultural Experiment Station, employer for hire of James
Darrell McCauley.
DOCUMENT SOURCE
This manual page was generated by the Netpbm tool 'makeman' from HTML source. The master
documentation is at
http://netpbm.sourceforge.net/doc/pgmtexture.html
netpbm documentation 22 Aug 1991 Pgmtexture User Manual(0)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
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