《计算机应用研究》|Application Research of Computers

基于语义参数的三维复杂模型变形方法研究

3D complex models deformation based on semantic parameters

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作者 孙霞,何坤金
机构 河海大学 物联网工程学院,江苏 常州 213022
统计 摘要被查看 次,已被下载
文章编号 1001-3695(2019)05-062-1577-04
DOI 10.19734/j.issn.1001-3695.2018.03.0233
摘要 针对含有自由曲面的三维模型不易变形的问题,提出一种基于语义参数的三维复杂模型变形方法,旨在实现三维模型的快速设计。该方法利用变形控制点作为模型变形的基本元素,通过设置语义参数实现层次化变形:以变形控制点带动分组部件变形,以分组部件促进三维模型整体变形。首先,采用Hausdorff测距法和均值聚类法,将已分组的电动车自由曲面替换成二次曲面;然后,根据变形控制点间及与部件顶点的关系,计算各分组部件内部和外部的约束条件;最后,编辑修改定义在变形控制点上的语义参数,实现模型自定义变形。电动车三维模型验证实验结果表明,该方法支持用户通过修改少量语义参数对模型进行变形,有效提升了三维模型个性化设计的效率。
关键词 聚类分析; 二次曲面; 部件约束; 语义参数
基金项目 国家自然科学基金资助项目(61472118)
常州市科技计划资助项目(CE20140008)
本文URL http://www.arocmag.com/article/01-2019-05-062.html
英文标题 3D complex models deformation based on semantic parameters
作者英文名 Sun Xia, He Kunjin
机构英文名 College of IOT Engineering,Hohai University,Changzhou Jiangsu 213022,China
英文摘要 This paper developed a method about 3D complex models deformation based on semantic parameters to quickly design the 3D complex models, which could solve the problem that 3D models including free-form surfaces have difficult in deformation. This method regarded deformation handles as basic elements, so that by setting the semantic parameters realized the hierarchical deformation, the deformation of components by configuring the deformation handle could make the 3D models redesigned. First, the quadric surfaces replaced the freeform surfaces of each component with Hausdorff distance and the cluster analysis method. Then, the relationship between deformation handles and vertices of each component helped to calculate the constraints of the internal and external components. Finally, it edited and modified the semantic parameters of the deformation handles deformed 3D models. Experimental results which used 3D electromobile as an example show that the above method support users achieve the deformation of 3D models with a few parameters and keep better efficiency of personalized design.
英文关键词 cluster analysis; quadric surface; component constraint; semantic parameter
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收稿日期 2018/3/22
修回日期 2018/5/17
页码 1577-1580,1600
中图分类号 TP391
文献标志码 A