Compositing:: - global definition From The Digital Fact Book
Simultaneous multi-layering and design for moving pictures. Modern designs often use many techniques together, such as painting, retouching, rotoscoping, keying/matting, digital effects and colour correction as well as multi-layering to create complex animations and opticals for promotions, title sequences and commercials as well as in programme content. Besides the creative element there are other important applications for compositing equipment such as image repair, glass painting and wire removal - especially in motion pictures. The quality of the finished work, and therefore the equipment, can be crucial especially where seamless results are demanded. For example, adding a foreground convincingly over a background - placing an actor into a scene - without any tell-tale blue edges or other signs that the scene is composed.