### Color Transform

The Color Transform operation is used to change the color system of a image. The available methods in TerraLib are:

- RGB to IHS: Converts the system color of the image from RGB to IHS.

- IHS to RGB Converts the system color of the image from IHS to RGB.

It is accessible through:
Raster Processing > Color Transform... (list of all raster layers will be available)
This wizard consists of the following steps:

#### Wizard Page 1 - Selection of the layer to apply the operation (Layer Search)

1. On the List of Layers select the raster layer to change the color system.
2. Optionally use Filter By Name field giving part of the layer name to help find the layer in the list.
3. Press Next to go to next step or Cancel to close the dialog.

#### Wizard Page 2 - Color Transform parameters

1. Select the Type of color transform to be used and set the their specific parameters.

- RGB - IHS

- Select the raster and band index for the red channel.
- Select the raster and band index for the blue channel.
- Select the raster and band index for the green channel.

- Defines the minimum and maximum RGB value used in the transformation.

- IHS - RGB

- Select the raster and band index for the intensity channel.
- Select the raster and band index for the hue channel.
- Select the raster and band index for the saturation channel.
- Defines the minimum and maximum RGB value used in the transformation.

2. Press Next to apply the contrast or Back to go to the previous wizard page.

#### Wizard Page 3 - Output information

1. Raster Info - First press and inform the folder where the resulting file will be saved.
2. Name - inform the raster name.
3. Extra Parameters - if there are some, see the details on how to inform then here.
4. Press Finish to save the resulting contrasted raster or Back to go to the previous wizard page.

Hint: The resulting image will be added as a new layer at the TerraView project.