Combine Channels

This command lets you create a color image from up to three black and white images of the same size.

Color Space

This control lets you select which set of three color channels you want to combine (RGB, HSV or HSL)

Color Channels

These three controls let you assign fixed gray levels, black and white images, or 16-bit black and white images to each channel.

If you assign a constant gray level to a color channel, that level will be applied to the channel over the entire output image and a slider is displayed next to the color control to let you set its level. If all the channels are set to constant gray levels, the output image is a 100x100 pixel image of a solid color.

If more than one of the controls is be set to an image then all the images must have the same type and dimensions in pixels.

By using Combine Channels and Extract Channel, you can split and image into its component channels, adjust them independently, and then recombine them. You can also create many interesting special effects by swapping channels or using a channel from one color space with another.