计算机工程与应用2018，Vol.54Issue(8)：183-188,6.DOI:10.3778/j.issn.1002-8331.1611-0358
面向辐射模拟的叶片模型的网格简化方法
Study on mesh simplification method of blade model in canopy radiation simulation
摘要
Abstract
Owning to the high precision requirement of tree model and the large amount of calculation with canopy radia-tion simulation,a new method which is a suitable mesh simplification of blade model based on method of edge collapse is proposed.On the base of QEM simplification algorithm,a method of changing the order of edge collapses in the simplifi-cation is presented by introducing the curvature change and irregular triangle judgment into the error metrics,using half-edge collapse to keep blade model boundary.Taking loquats as an example,getting the 3D loquats&blade model by hand-held laser scanner Artec Eva,simplify the blade model by this new method,and apply the simplified blade model to the radiation calculation.In the aspect of simulation precision of the radiation,the experimental results show that the simula-tion results of the same model between before and after simplification have small variations.The simplified method can meet the requirement of the radiation simulation accuracy,and improve the calculation efficiency of radiation simulation significantly;In the aspect of visualization effects,the simplified model can keep the main morphological structure charac-teristics of blades and get a well visualization effect.关键词
网格简化/边折叠/顶点法向/光合有效辐射(PAR)分布模拟Key words
mesh simplification/edge collapse/vertex normal/Photosynthetically Available Radiation(PAR)distribution simulation分类
信息技术与安全科学引用本文复制引用
崔磊,唐丽玉,孙梅,杨怡斐..面向辐射模拟的叶片模型的网格简化方法[J].计算机工程与应用,2018,54(8):183-188,6.基金项目
国家自然科学基金(No.41471334) （No.41471334）
福建省科技引导性项目(No.2016Y0058). （No.2016Y0058）
