[

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This program is part of

based on spatial dependence matrices at 0, 45, 90, and 135 degrees for

a distance

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:

The program can run incredibly slow for large images (larger than 64 x

64) and command line options are limited. The method for finding the

Maximal Correlation Coefficient, which requires finding the second

largest eigenvalue of a matrix Q, does not always converge.

Copyright (C) 1991 by Texas Agricultural Experiment Station, employer

for hire of James Darrell McCauley.

netpbm documentation 22 Aug 1991 Pgmtexture User Manual(0)