Pgmtexture User Manual

Section: Misc. Reference Manual Pages (0)
Updated: 22 Aug 1991
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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.
       

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


 

Index

NAME
SYNOPSIS
DESCRIPTION
LIMITATIONS
SEE ALSO
AUTHOR
DOCUMENT SOURCE
LinuxReviews : manual page archive