Compositing is the process of taking several visual elements from different sources and combining them into a single video. The video effects (VFX) technique is usually used to imply that the elements are …

One of the key insights in the Porter and Duff paper is that F shows up in the compositing formula only when multiplied by a, and G appears only when multiplied by p.

The compositing depends on the ordering of the layers ‣ In rasterization pipeline, we need to keep all fragments that occupy a pixel. Then sort them by depth value, then alpha-blend. The “over” formula …

Controls the linear interpolation of foreground and background pixels when elements are composited. This assumes an image with “non-pre-multiplied” alpha. How much of B is blocked by A? How much …

Optical Compositing Image Composition Defn: Combine foreground element with background Examples: Graphics arts: masking tape, stencil, frisket Animation: cels, multiplane camera Film: optical printing, …

Digital compositing, as we are going to be discussing it, deals with the process of integrating images from multiple sources into a single, seamless whole. While many of these techniques apply to still …

"The Art and Science of Digital Compositing" by Ron Brinkmann is the definitive guide to the technical and artistic aspects of digital compositing, now in its thoroughly updated second edition.