glcm

Name

glcm - Computes Grey Level Cooccurrence Matrix

Syntax

 #include <xite/texture.h>

 int glcm( IBAND input, ID_BAND output, int dx,
    int dy, int nogreylevel );

Description

Computes the Grey Level Cooccurence Matrix of an image. The angle and the displacement will be computed from the given dx and dy. dx and dy can be negative. All the greylevel values (< nogreylevels) on the input band will be increased by one on the output band coordinate system. It means that if there is a greylevel combination (0,1) on the input band then the index (1,2) on the output band will be increased.

Restrictions

input must have pixel type unsigned byte. output must have pixel type double.

Return value

 0 => ok
 1 => there are grey levels > "nogreylevel" in
      the input band
 2 => bad pixel type in input
 3 => output is not integer type
 4 => horizontal size of output is less than "nogreylevel"
 5 => vertical size of output is less than "nogreylevel"

Reference

 R. M. Haralick, K. Shanmugam, and I. Dinstein,
 "Textural Features for Image Classification",
 IEEE Trans. on Systems, Man and Cybernetics,
 Vol. SMC-3, pp. 610-621, 1973.

Author

Yogesan K., BLAB, Ifi, UiO

Id

$Id: glcm.c,v 1.16 1997/01/14 13:02:18 svein Exp $