Creating an RGB layer map (PB only)Particle Playground can extract brightness values separately from the red, green, and blue channels in an image. If you want to create different layer maps for each channel, use a program that can edit individual color channels, such as Adobe Photoshop, and then paint or paste each layer map into its own channel. Save the layer map as an RGB image in a format After Effects can import. The image may look unusual when viewed in RGB mode because it's intended to be used as a single hidden layer containing three different layer maps, not as a visible color layer. When you apply an effect that can use each color channel as a separate layer map, you can still use a grayscale image; the RGB channels will be identical.
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