计算机工程 ›› 2012, Vol. 38 ›› Issue (22): 216-219.doi: 10.3969/j.issn.1000-3428.2012.22.054

• 图形图像处理 • 上一篇    下一篇

基于骨架的网格模型变形

齐晓明,韩 丽   

  1. (辽宁师范大学计算机与信息技术学院,辽宁 大连 116029)
  • 收稿日期:2012-01-11 修回日期:2012-03-22 出版日期:2012-11-20 发布日期:2011-11-17
  • 作者简介:齐晓明(1987-),女,硕士,主研方向:图形图像处理,计算机辅助设计;韩 丽,副教授、博士
  • 基金项目:

    国家自然科学基金资助项目(61201316);辽宁省教育厅基金资助项目(2010921090)

Grid Model Deformation Based on Skeleton

QI Xiao-ming, HAN Li   

  1. (College of Computer and Information Technology, Liaoning Normal University, Dalian 116029, China)
  • Received:2012-01-11 Revised:2012-03-22 Online:2012-11-20 Published:2011-11-17

摘要: 现有骨架驱动变形算法多以单一骨架驱动变形,且骨架预设十分复杂。为此,提出一种基于骨架的网格模型变形算法。结合多分辨率Reeb图方法提取模型的骨架结构,确定各骨架点对应的局部区域,将骨架点插值构造二次Bézier曲线,通过交互式拖动任意骨架点,计算与其相连多骨架点的动态变化情况,实现模型局部区域的自然形变。实验结果表明,该算法能获得较为自然平滑的变形结果。

关键词: 网格模型, 骨架, 多分辨率, Bézier曲线, 变形, 交互

Abstract: The current skeleton-driven deformation algorithms usually use single bone to drive deformation, and the skeleton default is very complex. In order to solve this problem, an improved mesh deformation algorithm based on skeleton is proposed. It combines the Reeb Graph(RG) skeleton extraction theory to obtain the local area of each skeleton, approximates the skeleton nodes into a Bézier curve. With the interaction of skeleton node, this algorithm can automatically adjust connected skeleton nodes, and implements the intuitive local deformation of mesh model. Experimental results show that this algorithm can obtain more natural and smooth deformation results.

Key words: grid model, skeleton, multi-resolution, Bézier curve, deformation, interactive

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