一种基于叶脉形状函数的叶片形态模拟改进方法

Abstract

Abstract: The shape of plant leaves is mostly flaky,which makes the two-dimensional shap of the leaves more attractive.However,the three-dimensional shapes of the leaves,such as bending and concave and convex,are also an important part of the blade morphology.Based on the simulation method proposed by Runions et al.for plant leaf morphology in a two-dimensional plane,a three-dimensional blade shape simulation method based on vein shape function was proposed.Firstly,the B-spline curve is used to specify the shape function in the third dimension for different grades of veins,and the veins with three-dimensional shape are obtained.The blade edge is then moved according to the vein structure to obtain the three-dimensional shape of the edge.Then the edge and the vein are sampled.The constellation Delaunay triangulation algorithm is used to construct the foliar triangle mesh,and the Loop subdivision algorithm is used to perform the mesh smooth subdivision processing to generate a smooth foliar mesh model.A plant leaf model with a three-dimensional morphology can then be obtained.Experiments show that this method can effectively generate three-dimensional plant leaf models of various forms,which can be used for morphological simulation of real plantlea-ves.

Key words: B-spline curve, Constrained Delaunay triangulation, Loop subdivision, L-system, Plant modeling, Shape function

CLC Number:

TP391

WANG Hua. Improved Method for Blade Shape Simulation Based on Vein Shape Function[J].Computer Science, 2019, 46(6A): 234-238.

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Improved Method for Blade Shape Simulation Based on Vein Shape Function

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