Manual/Compositing Nodes

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The compositing nodes allow you to manipulate an image by routing it through a map of connected nodes. A starting image is routed through different nodes that do various things to the image, combined with other inputs or put back together, and finally output. Images can be split into their RGB components, combined (mixed) with other inputs, and layered on top of one another. In film, this process is called post-processing and occurs during the post-production (namely, after the raw shots are 'in the can'). At this phase, the raw footage is handed over to an editor who does all sorts of magic to make a good looking movie. Now you can too!

This section is organized by type of nodes, which are grouped based on similar functions:

• Input - Adds something to the node map, such as an image or a value.
• Output - Displays the result in progress as a small image.
• Color - Manipulates the colors of an image.
• Vector - Manipulate the intensities and reflections of an image
• Filters - Process the image to enhance it, working on adjacent pixels.
• Convertors - Separate the image into its component video, or convert formats.
• Mattes - Generating mattes to mask off areas of an image.
• Distortion - Changing the shape of the image.
• Groups - User-defined groups of nodes.

The simplest way to add a node is to put your cursor in a Node Editor window, and then press Space and click on Add. The popup menu will extend to show you these types of nodes. Click on a node type and the popup menu will extend again to show you specific node types available.

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