An Automatic Rendering Method of Line Strokes for Chinese Landscape Painting

Chinese painting is very abstract and emotional, and drawing techniques are flexible and full of changes. Painting with line strokes is one of the most important drawing techniques for Chinese paintings. A method to automatically render line brush strokes for Chinese landscape paintings is proposed in this paper. Analyzed the common techniques of drawing lines used by artists, we developed a new type of view-dependent feature line: Side Lines. In Chinese landscape painting, side lines are generally used to portray rock folds. For polygonal mesh models, we define side lines as the lines that are located in the model of concave area, and their adjacent polygons are nearly parallel to the view direction. We use silhouettes and side lines to convey mountain shape, and give a detailed line strokes rendering algorithm. The results of rendering show that our method can simulate well the drawing technique of "GOU" in Chinese landscape paintings.