Research on Techniques for Accurate Modeling and Rendering 3D Plant Leaf
3维植物叶片精确建模和绘制技术研究

A variety of models for plant leaf morphogenesis have been reported, but none of them can be generated with great accuracy or level of detail. In this paper B-spline curve is used to describe the silhouette and midvein of plant leaf, and the leaf blade surface is meshed with Delaunay triangulation. Then an adaptive refinement scheme is introduced to smooth the triangular mesh. This may provide a common method for describing the morphology of plant leaf blade. B-spline curves which pass through the control points gives an intuitive mechanism to model the silhouette of a wide variety of plant leaf, and the usage of Delaunay triangulation solves the difficulty of meshing complex leaf blade such as lobbed leaf. In addition, our adaptive subdivision scheme can generate relative smooth leaf surface, and the curled effects can be obtained basing on the subdivided surface. The experimental results verify the validity of the proposed method.