基于参数曲线及其所围面积的三维树木建模  

3D tree modeling based on the parametric curve and its integral

作　　者：林定[1] 陈崇成[1] 唐丽玉[1] 邹杰[1] 王钦敏[1] 

机构地区：[1]福州大学空间数据挖掘与信息共享教育部重点实验室,福建省空间信息工程研究中心,福建福州350002

出　　处：《福州大学学报（自然科学版）》2011年第3期367-374,共8页Journal of Fuzhou University(Natural Science Edition)

基　　金：国家973计划前期研究资助项目(2009CB426310);国家自然科学基金资助项目(30972299);福建省自然科学基金资助项目(2010J01203)

摘　　要：采用Bezier参数曲线作为求取三维树木建模参数的基本输入,引入参数曲线所围面积的显式代数表达,将曲线所围面积作为权重因子,调整植物体上各功能器官的空间分布,实现给定参量约束下的疏密分布的图形化控制.在实现方面,将曲线的数值计算与交互式编辑相分离,分别以动态库和COM控件方式实现,增强了建模系统的可扩展性.实验结果表明,所提出的方法对三维树木建模交互性是有效的,具有普适性,为植物学知识规则应用于形态建模提供一个可视化、交互式的新途径,实现所见即所得的树木建模效果.Used Bezier curves as basic inputs to calculating parameters of tree model. Following the introduction of explicit algebra expression of the area bounded by the curves, the area was used as weight for adjusting distribution of organs. The calculation and interactive editing of the curve was implemented separately as dynamic libraries and. COM controls, which enhanced scalability of the system. A graphical tool was proposed, which adjusted spatial distribution of different functional parts in the plant to meet a given amount. The result of experiment showed that the method presented in this paper was applicable and universal. So, using the interactively graphical tool integrated botanic knowledge into its shape modeling, all the model can be obtained in WYSIWYG（what you see is what you get）.

关 键 词：参数曲线 所围面积 三维树木 虚拟植物 建模 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术]