Non-photorealistic Rendering for 3D Mesh Models

Non-photorealistic rendering (NPR) for 3D mesh models has made considerable progress in recent years and it has become a hot topic in computer graphics and other related fields. This paper presents an overview of the key techniques in non-photorealistic rendering for 3D mesh models, such as line drawings based on geometric and visual features, the surface brightness and stylized shadow setting. We introduce popular methods dealing with these problems and point out the characteristics of these methods and their deficiencies. Discussion is given and future work is addressed at the end of the paper.