GRASS GIS: i.rgb.his

NAME

i.rgb.his - Red-green-blue (rgb) to hue-intensity-saturation (his) raster map color transformation function

KEYWORDS

imagery

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: Red input raster map
green_input=name: Green input raster map
blue_input=name: Blue input raster map
hue_output=name: Output hue raster map
intensity_output=name: Output intensity raster map
saturation_output=name: Output saturation raster map

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.

AUTHOR

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

Last changed: $Date: 2003-04-17 07:51:33 -0700 (Thu, 17 Apr 2003) $

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