Abstract: Aiming at the problems of the complex procedure and multiple solutions in the present mapping and color separation algorithms of woven photograph CAD technology, the author compares it with the technology of color separation in RIP and takes the characteristic of the woven photograph CAD technology and the actual fabric production process into account, and then comes up with a solution of mapping and color separation of woven photograph CAD which is based on the compression of saturation in the HSI color space. In this solution, colors are divided into some mapping spaces to map and color separate according to the hue angles of the primary colors. It is easy to understand and resolves the trouble of multiple solutions of mapping and color separation by multi primary. The author has realized this solution of mapping and color separation of woven photograph CAD under the Jacket for MATLAB environment. Experiments have shown that this solution is very effective in color separation. By the way, the use of GPU computation in Jacket has improved computational efficiency of image processing, which makes it possible to design by real-time interaction on the internet.

Key words: photograph CAD, RIP, mapping, color separation, HSI, color primaries, Jacket, GPU