i.rgb.his.1grass man page

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


imagery, color transformation, RGB, HIS, IHS


i.rgb.his --help
i.rgb.his red=name green=name blue=name hue=name intensity=name saturation=name [--overwrite] [--help] [--verbose] [--quiet] [--ui]


Allow output files to overwrite existing files
Print usage summary
Verbose module output
Quiet module output
Force launching GUI dialog


red=name [required]
Name of input raster map (red)
green=name [required]
Name of input raster map (green)
blue=name [required]
Name of input raster map (blue)
hue=name [required]
Name for output raster map (hue)
intensity=name [required]
Name for output raster map (intensity)
saturation=name [required]
Name for output raster map (saturation)


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



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

Last changed: $Date: 2016-01-28 12:27:18 +0100 (Thu, 28 Jan 2016) $

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