Computer Animation Production System

The Computer Animation Production System (CAPS) was a digital ink and paint system used in animated feature films, the first at a major studio, designed to replace the expensive process of transferring animated drawings to cels using India ink or xerographic technology, and painting the reverse sides of the cels with gouache paint. Using CAPS, enclosed areas and lines could be easily colored in the digital computer environment using an unlimited palette. Transparent shading, blended colors, and other sophisticated techniques could be extensively used that were not previously available.

The completed digital cels were composited over scanned background paintings and camera or pan movements were programmed into a computer exposure sheet simulating the actions of old style animation cameras. Additionally, complex multiplane shots giving a sense of depth were possible. Unlike the analog multiplane camera, the CAPS multiplane cameras were not limited by artwork size. Extensive camera movements never before seen were incorporated into the films. The final version of the sequence was composited and recorded onto film. Since the animation elements existed digitally, it was easy to integrate other types of film and video elements, including three-dimensional computer animation.

CAPS was a proprietary collection of software, scanning camera systems, servers, networked computer workstations, and custom desks developed by The Walt Disney Company together with Pixar in the late-1980s. It succeeded in reducing labor costs for ink and paint and post-production processes of traditionally animated feature films produced by Walt Disney Animation Studios. It also provided an entirely new palette of digital tools for the film-makers.

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