Cartoon Rendering Illumination Model Based on Phong

3D cartoon rendering has broad application prospect in games, movies and cartoons. To this end, this paper introduces a cartoon rendering illumination model improved from Phong illumination model, and realizes it with 3ds Max SDK in the form of plug-ins. By discretizing diffuse reflection part and specular reflection part in the Phong illumination model, surfaces of models show different blocks of color, among which there are clear boundaries. In addition, by using linear interpolation between different color blocks, boundaries can be soften. The experimental results show that this cartoon rendering illumination model can not only make a cartoon appearance, but also mix with Phong illumination model, and achieve a unique effect.