关键词: 草图, 轮廓线, 拉普拉斯算子, 网格曲面变形

Abstract: A method of mesh deformation based on the sketch line and the silhouette was proposed to control mesh model.The original control line was generated by extracting the silhouette from the mesh model or drawing an original sketch line on the mesh surface. Operations on differential factors were utilized in the neighborhood of the original control line, or a new sketch line was drawn as the destination control line to map the original one. Linear equations were established by using discrete Laplacian operator with appropriate weights, which was resolved by means of the least square approximation to finish the procedure of mesh deformation. The effectiveness and engineering feasibility of this method were verified on the self-developed software platform.

Key words: sketch, silhouette, Laplacian operator, mesh deformation, least squares approximations