NAME

       i.rgb.his   -  Transforms  raster  maps from RGB (Red-Green-Blue) color space to HIS (Hue-
       Intensity-Saturation) color space.

KEYWORDS

       imagery, color transformation, RGB, HIS

SYNOPSIS

       i.rgb.his
       i.rgb.his help
       i.rgb.his     red_input=name     green_input=name     blue_input=name      hue_output=name
       intensity_output=name saturation_output=name  [--overwrite]  [--verbose]  [--quiet]

   Flags:
       --overwrite
           Allow output files to overwrite existing files

       --verbose
           Verbose module output

       --quiet
           Quiet module output

   Parameters:
       red_input=name
           Name of input raster map (red)

       green_input=name
           Name of input raster map (green)

       blue_input=name
           Name of input raster map (blue)

       hue_output=name
           Name for output raster map (hue)

       intensity_output=name
           Name for output raster map (intensity)

       saturation_output=name
           Name for output raster map (saturation)

DESCRIPTION

       i.rgb.his  is  an image processing program that processes three input raster map layers as
       red, green, and blue components and produces three output raster map  layers  representing
       the  hue, intensity, and saturation of the data.  The output raster map layers are created
       by a standard red-green-blue (rgb) to hue-intensity-saturation (his) color transformation.
       Each  output  raster  map  layer  is  given  a linear gray scale color table.  The current
       geographic region definition and mask settings are respected.

SEE ALSO

       i.his.rgb

AUTHOR

       David Satnik, GIS Laboratory, Central Washington University,
       with acknowledgements to Ali Vali, Space Research Center, for the core routine.

       Last changed: $Date: 2011-11-08 03:29:50 -0800 (Tue, 08 Nov 2011) $

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       © 2003-2013 GRASS Development Team