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# Topic: color transformation

| Tool | Description |
|--------|-------------|
| [i.his.rgb](i.his.rgb.md) | Transforms raster maps from HIS (Hue-Intensity-Saturation) color space to RGB (Red-Green-Blue) color space. |
| [i.rgb.his](i.rgb.his.md) | Transforms raster maps from RGB (Red-Green-Blue) color space to HIS (Hue-Intensity-Saturation) color space. |
| [r.his](r.his.md) | Generates red, green and blue (RGB) raster map layers combining hue, intensity and saturation (HIS) values from user-specified input raster map layers. |

*See also the corresponding keyword for additional references:*

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