lit

Name

lit - Local Information Transform texture measure

Syntax

lit <inimage> <outimage> <dp> [<dx> [<dy>]]

Description

lit transform with window size dx * dy using the histogram updating technique. lit counts the number of pixels, inside the dx * dy filtering window, having a pixel value in the interval cp-dp..cp+dp, where cp is the value of the center pixel, and dp is the delta pixel value argument.

dx is the horizontal window size. Default value 3. dy is the vertical window size. Default value dx.

Restrictions

Input image must have bands with pixel type unsigned byte. dx, dy must be larger than 0, but not larger than the input image size. dp must be 0..255.

Reference

Lowitz, Gabriel E.: "Extracting the Local Information Content of a Spatial Image" in Proc. 7.ICPR, Montral, Canada, Aug. 1984, 1266-1268.

Author

Tor Lønnestad, BLAB, Ifi, UiO.

Examples

 lit mona.img monalit.img 0
 lit mona.img monalit.img 5 7
 lit mona.img monalit.img 5 7 11

Id

$Id: lit.c,v 1.24 1997/01/10 16:09:29 svein Exp $

lit