虚拟阔叶植物的建模及仿真

Modeling and simulation of broad-leaf plants

针对以往研究中植物建模主要集中在对植物器官静态结构的仿真,通常会忽略树叶或花瓣的厚度问题,本文根据阔叶植物的自然属性,利用植物的茎枝和叶片结构的相似性,采用具有厚度信息的3D叶片建模方法,通过叶片平行脉位置方向的弹性约束关系来有效控制叶片的动态仿真。实验表明,该方法仿真效率高且仿真结果较为真实。

Modeling and simulation of virtual plant should be efficient and realistic. Many existed modeling and simulation methods have been focused on the static organs of plant models, in which foliage are modeled by simple 2D polygons that the thickness and the motion of leaves are neglected. Such models are far from the realistic ones. A new modeling and animation method of broad-leaf plants is proposed. According to the natural properties of broad-leaf plants this method uses the similarity of the growth structure of leaves and stems in the modeling process. This method also takes the thickness of leaves into consideration in building 3D leaf model. In particular, by introducing the force constraint between mid-rib and parallel venation, the dynamic simulation of leaves can be vividly performed. Experiments show that the proposed method can simulate the leaf＇s motion effectively and realistically.