Creative Effects > Keyer > Creating a Key by Extracting a Range of Colours >

# Selecting a Colour Model

There are four colour models you can use.

For floating-point images, you can use nodes in Batch or the Modular Keyer to create a 16-bit key by extracting a range of colours. See Keyer-HLS Node, Keyer-RGB Node, Keyer-RGBCMYL Node, and Keyer-YUV Node.

HLS

In the HLS menu, you set the softness and tolerance ranges using the hue, luminance, and saturation channels.

YUV

In the YUV menu, you set the softness and tolerance ranges using the luma and chroma signals of YUV component video.

RGB

In the RGB menu, you set the softness and tolerance ranges using the red, green, and blue channels.

RGBCMYL

In the RGBCMYL menu, you set the softness and tolerance ranges using the red, green, blue, cyan, magenta, yellow, and luminance channels. This colour model provides subpixel resolution.