Differential Geometry-based Landscape Painting Real-time Rendering

With the fast development of computer graphics, many rendering technologies and Chinese painting simulation methods are picked up and we carry on a research on three-dimension render in landscape painting style for the goal of getting a real time and natural effect.For the necessary information to render 3D model, we conclude the drawing technologies and features for landscape painting. The paper is composed with building 3D feature lines and multi-layering mechanism based on texture mapping.Because of landscape painting's style and drawing, the feature lines are divided into dynamic feature lines and static feature lines. We use contours and introduce suggestive contours for dynamic lines, these lines don't need a lot of calculation and display the model's dynamic features admirably. The ridges and valleys are considered to construct static feature lines and for more detail, we construct more liens by the max curvature to represent internal characters.We render these lines by Xtoon:A extend toon shader and different feature lines are rendering by different texture mapping methods. We present two-pass texture mapping to render the dynamic feature lines, which get texture coordinates by the view vector and other geometry features and result to a coherent effect. For the static features, we construct the texture coordinates by some changeless geometry attributes and in the rendering procedure, we make some little change to get a lively rendering effect.The experiment results indicate these algorithms in this paper can make a real time scene having some landscape painting's features.