基于拉普拉斯网格变形的三维植物叶片建模

A method for modeling leaves by deformation based on Laplacian coordinates

论文提出一种基于拉普拉斯网格变形的三维植物叶片交互式设计方法。该方法以叶片轮廓及叶片主脉中轴点数据输入并生成网格曲面,通过拉普拉斯网格变形技术对叶片的曲面网格进行交互式编辑。轮廓中轴数据点既可以通过三维数字化获得,也可以根据叶脉形态计算得到。实验证明,该方法具有较好的普适性,变形计算快速,能够达到实时交互设计的需要,所生成的叶片不仅能够很好地保持叶片的面积特征,同时在形态上具有较强的真实感。

This paper describes a realistic interactive method for modeling leaves by deformation based on Laplacian coordinates.This method generates the leaf meshes Using the silhouette and axial venation data of a leaf as input.The leaf surface can be edited interactively by using Laplacian coordinates as deformation calculation.The silhouette and axial venation data can be obtained using laser scanner or calculated by vein patterns.Experimental results show that the proposed method is very fast in deformation calculation and enough for real-time interactive application,with good universality.The generated 3D leaves model can not only maintain its area,but also show realistic effects.