pgmtexture man page on BSDOS

Man page or keyword search:  
man Server   6284 pages
apropos Keyword Search (all sections)
Output format
BSDOS logo
[printable version]



pgmtexture(1)					pgmtexture(1)

NAME
       pgmtexture  -  calculate textural  features on a portable
       graymap

SYNOPSIS
       pgmtexture [-d d] [pgmfile]

DESCRIPTION
       Reads a portable graymap as  input.   Calculates textural
       features based	on  spatial dependence matrices at 0, 45,
       90, and 135 degrees for a distance d (default = 1).   Tex-
       tural features include:

	      (1) Angular Second Moment,
	      (2) Contrast,
	      (3) Correlation,
	      (4) Variance,
	      (5) Inverse Difference Moment,
	      (6) Sum Average,
	      (7) Sum Variance,
	      (8) Sum Entropy,
	      (9) Entropy,
	      (10) Difference Variance,
	      (11) Difference Entropy,
	      (12, 13) Information Measures of Correlation, and
	      (14) Maximal Correlation Coefficient.

       Algorithm taken from:
       Haralick,  R.M., K. Shanmugam, and I. Dinstein. 1973. Tex-
       tural features for image classification.	  IEEE	Transac-
       tions	on	Systems,    Man,    and Cybertinetics,
       SMC-3(6):610-621.

BUGS
       The program can	run  incredibly slow  for  large  images
       (larger	than  64  x 64) and command line options are lim-
       ited.  The method for finding (14) the maximal correlation
       coefficient,  which  requires  finding  the second largest
       eigenvalue of a matrix Q, does not always converge.

REFERENCES
       IEEE Transactions  on  Systems,	Man,  and  Cybertinetics,
       SMC-3(6):610-621.

SEE ALSO
       pgm(5), pnmcut(1)

AUTHOR
       Copyright  (C)  1991 by Texas Agricultural Experiment Sta-
       tion, employer for hire of James Darrell McCauley.

			   22 Aug 1991				1

[top]
                             _         _         _ 
                            | |       | |       | |     
                            | |       | |       | |     
                         __ | | __ __ | | __ __ | | __  
                         \ \| |/ / \ \| |/ / \ \| |/ /  
                          \ \ / /   \ \ / /   \ \ / /   
                           \   /     \   /     \   /    
                            \_/       \_/       \_/ 
More information is available in HTML format for server BSDOS

List of man pages available for BSDOS

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net