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一种有效的兵马俑碎块断裂面分割方法

  

  1. 1. 咸阳师范学院教育科学学院,陕西 咸阳 712000;2. 西北大学信息科学与技术学院,陕西 西安 710127;
    3. 北京师范大学信息科学与技术学院,北京 100875
  • 出版日期:2017-08-31 发布日期:2017-08-10
  • 基金资助:
    国家自然科学基金项目(61373117);陕西省社科界重大理论与现实问题研究项目(2017C054)

An Effective Fracture Surface Segmentation Method of the Terracotta Warrior Block

  1. 1. School of Education Science, Xianyang Normal University, Xianyang Shaanxi 712000, China;
    2. School of Information Science and Technology, Northwest University, Xi’an Shaanxi 710127, China;
    3. School of Information Science and Technology, Beijing Normal University, Beijing 100875, China
  • Online:2017-08-31 Published:2017-08-10

摘要: 兵马俑碎块是具有一定厚度的刚体,对其断裂面的分割是兵马俑复原工作中的一
个重要步骤。针对兵马俑碎块的三角网格数据模型,提出一种兵马俑碎块断裂面分割方法。首
先,计算该数据模型上各个顶点的体积积分不变量,以提取曲面的边界特征点;然后,通过最
小生成树算法和剪枝策略得到闭合边界线;最后,提取碎块的曲面并识别原始面和断裂面,从
而完成碎块断裂面的分割。实验结果表明,在断裂面较原始面粗糙的情况下,该方法能有效地
完成兵马俑碎块的断裂面分割。因此说,该断裂面分割方法是一种有效的兵马俑碎块断裂面分
割方法。

关键词: 兵马俑, 断裂面分割, 体积积分不变量, 最小生成树, 剪枝策略

Abstract: The Terracotta Warrior block is a rigid block with some thickness, and it’s fracture surface
segmentation is an important work of Terracotta Warrior restoration. Aiming at triangular mesh data
model of Terracotta Warrior blocks, an effective fracture surface segmentation method was proposed
here. Firstly, the feature segmentation points were extracted by calculating the volume integral
invariant of each vertex on surfaces. Secondly, the closed boundary lines were solved by minimum
spanning trees algorithm and pruning strategy. Finally, all the surfaces were extracted and the fracture
surfaces were distinguished from original surfaces. The experimental results showed that the
proposed method could effectively complete fracture surface segmentation of the Terracotta Warrior
block when the fracture surfaces were rougher than original surfaces. So the proposed fracture surface
segmentation method is an effective fracture surface segmentation way of Terracotta Warrior blocks.

Key words: Terracotta Warrior, fracture surface segmentation, volume integral invariant, minimum
spanning tree,
pruning strategy