pgmtexture1
Calculate textural features on a pgm image
Usage
pgmtexture
[-d d]
[pgmfile]
Overview
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:
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Angular Second Moment |
|---|---|
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Contrast |
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Correlation |
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Variance |
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Inverse Difference Moment |
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Sum Average |
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Sum Variance |
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Sum Entropy |
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Entropy |
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Difference Variance |
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Difference Entropy |
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Information Measures of Correlation |
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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 requires finding the second largest eigenvalue of a matrix Q, does not always converge.
Document source
This manual page was generated by the Netpbm tool 'makeman' from HTML source. The master documentation is at
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http://netpbm.sourceforge.net/doc/pgmtexture.html
Releases
16 releases since Debian 2.0 (Hamm); the text changed 2 times.
-d since Debian 12 (Bookworm).