Pgmtexture User Manual(1) General Commands Manual Pgmtexture User Manual(1)
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:
• Angular Second Moment
• Contrast
• Correlation
• Variance
• Inverse Difference Moment
• Sum Average
• Sum Variance
• Sum Entropy
• Entropy
• Difference Variance
• Difference Entropy
• Information Measures of Correlation
• Maximal Correlation Coefficient
Algorithm taken from: Haralick, R.M., K. Shanmugam, and I. Dinstein.
1973. Textural features for image classification. IEEE Transactions on
Systems, Man, and Cybertinetics, SMC-3(6):610-621.
OPTIONS
In addition to the options common to all programs based on libnetpbm
(most notably -quiet, see
Common Options ⟨index.html#commonoptions⟩ ), pgmtexture recognizes the
following command line option:
-d distance
The distance. Default is 1.
LIMITATIONS
The method for finding the Maximal Correlation Coefficient, which re-
quires 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 August 1991 Pgmtexture User Manual(1)
Generated by dwww version 1.15 on Sat Jun 29 02:28:49 CEST 2024.