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+\
+.\" This man page was generated by the Netpbm tool 'makeman' from HTML source.
+.\" Do not hand-hack it!  If you have bug fixes or improvements, please find
+.\" the corresponding HTML page on the Netpbm website, generate a patch
+.\" against that, and send it to the Netpbm maintainer.
+.TH "Pgmtexture User Manual" 0 "22 Aug 1991" "netpbm documentation"
+
+.SH NAME
+
+pgmtexture - calculate textural features on a PGM image
+
+.UN synopsis
+.SH SYNOPSIS
+
+\fBpgmtexture\fP
+
+[\fB-d\fP \fId\fP]
+
+[\fIpgmfile\fP]
+
+.UN description
+.SH DESCRIPTION
+.PP
+This program is part of
+.BR "Netpbm" (1)\c
+\&.
+.PP
+\fBpgmtexture\fP 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 \fId\fP (default = 1).
+.PP
+Textural features include:
+
+
+.IP \(bu
+Angular Second Moment
+.IP \(bu
+Contrast
+.IP \(bu
+Correlation
+.IP \(bu
+Variance
+.IP \(bu
+Inverse Difference Moment
+.IP \(bu
+Sum Average
+.IP \(bu
+Sum Variance
+.IP \(bu
+Sum Entropy
+.IP \(bu
+Entropy
+.IP \(bu
+Difference Variance
+.IP \(bu
+Difference Entropy
+.IP \(bu
+Information Measures of Correlation
+.IP \(bu
+Maximal Correlation Coefficient
+
+     
+.PP
+Algorithm taken from: \fIHaralick, R.M., K. Shanmugam, and
+I. Dinstein. 1973. Textural features for image classification.
+\fIIEEE Transactions on Systems, Man, and Cybertinetics,\fP
+SMC-3(6):610-621.\fP
+     
+.UN limitations
+.SH LIMITATIONS
+.PP
+The method for finding the Maximal Correlation Coefficient, which requires
+finding the second largest eigenvalue of a matrix Q, does not always converge.
+
+.UN seealso
+.SH SEE ALSO
+.BR "pgm" (5)\c
+\&,
+.BR "pamsharpness" (1)\c
+\&,
+.BR "pamsharpmap" (1)\c
+\&,
+.BR "pgmedge" (1)\c
+\&,
+.BR "pgmminkowski" (1)\c
+\&
+
+.UN author
+.SH AUTHOR
+
+Copyright (C) 1991 by Texas Agricultural Experiment Station, employer for
+hire of James Darrell McCauley. 
+.SH DOCUMENT SOURCE
+This manual page was generated by the Netpbm tool 'makeman' from HTML
+source.  The master documentation is at
+.IP
+.B http://netpbm.sourceforge.net/doc/pgmtexture.html
+.PP
+\ No newline at end of file