3D Compositing

3D compositing is a process by which various elements, often including both live action film footage or photographs and virtual computer-generated images, are layered and composited together into a single image or scene. This type of compositing is often done to create still images that include various components into a single image, though it can also be used in the post-production process for film or television programs to composite different elements into a video sequence. 3D compositing often differs from two-dimensional or 2D compositing in the way in which the different layers can be made to interact and more realistically affect each other.

The process of 3D compositing typically utilizes computer software developed for such compositing, often with input from various sources. This process typically involves multiple input files, including still images and video files, which are assembled and layered during the 3D compositing process. A simple example of this process would be the assembly of an image depicting a boat on the water in front of a large cliff, with other cliffs and clouds and sky in the background. The final image would contain all of these elements together in a single, essentially seamless image, though each piece could have come from a separate source.