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 to IHS (or RBG to HSL)

     • 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.

   • IHS to 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.

• HSL to RGB

• Select the raster and band index for  the hue channel.

• Select the raster and band index for  the light channel.

• Select the raster and band index for  the saturation channel.

• Bits per pixel - Defines the RGB range used in all the transformations.

    Wizard Page 2 - Color Transform output parameters

1. Repository - First press and inform the folder where the resulting file will be saved.

2. Layer Name - inform the raster name.

3. Press OK to save the resulting raster or Cancel to close the window.

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