Encoded information is provided about how an image is rendered. When the image is initially rendered, preselected colors are used. The image is re-rendered so that colors used to re-render the image encode information about how the image was originally rendered. For example, the colors for the re-rendered...http://www.google.com/patents/US5903278?utm_source=gb-gplus-sharePatent US5903278 - Primitive colorization of three dimensional graphics to provide feedback to a developer
