i.rgb.his i.rgb.his - Transforms raster maps from RGB (Red-Green-Blue) color space to HIS (Hue-Intensity-Saturation) color space. Imagery (i.*) ParameterRaster|red_output|Name for input raster map (red)|True ParameterRaster|green_output|Name for input raster map (green)|True ParameterRaster|blue_output|Name for input raster map (blue)|True OutputRaster|hue_input|Name of output raster map (hue)|False OutputRaster|intensity_input|Name of output raster map (intensity)|False OutputRaster|saturation_input|Name of output raster map (saturation)|False