Plant leaf modeling based on modified DLA model

In this paper, according to summarized and contrast the usual plant leaf visualization techniques, we present a method of plant leaf modeling and rendering based on the modified DLA model and botanical theory. In this approach, we modify the traditional DLA algorithm based on the botanical principles, so that it can simulate the leaf details such as venation more reality. We extract the leaf outline by using the marching square algorithm and generate the leaf venation as leaf skeleton by using the modified Diffusion limited aggregation (DLA) model and the botanical theory which leaf veins growth is related with auxin and leaf blade shape automatically. The leaf was triangulated uniformly by using the optimization algorism of Delaunay mesh. Finally, with the leaf vein node as the control point, the 2D leaf mesh was deformed by using Laplace iterative method to simulate the natural curved plant leaves. Our method provides a good method with leaf modeling, especially the leaf venation can generate automatically based-on the modified DLA and highlighted the importance of leaf skeleton for triangulation and leaf deformation.