期刊
ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION
卷 10, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/ijgi10080525
关键词
Terracotta Warrior fragments; point cloud; 3D reassembling; Siamese network; coarse-to-fine registration
资金
- National Key Research and Development Program of China [2019YFC1521102]
- China Post-doctoral Science Foundation [2018M643719]
- Young Talent Support Program of the Shaanxi Association for Science and Technology [20190107]
- Key Research and Development Program of Shaanxi Province [2019GY-215]
- Major research and development project of Qinghai [2020-SF-143]
This paper introduces a fracture-surface-based reassembling method named SPPD for Terracotta Warrior fragments, which outperforms conventional methods in real-world experiments and could be a valuable tool for virtual restoration of cultural heritage artifacts.
As one of China ' s most precious cultural relics, the excavation and protection of the Terracotta Warriors pose significant challenges to archaeologists. A fairly common situation in the excavation is that the Terracotta Warriors are mostly found in the form of fragments, and manual reassembly among numerous fragments is laborious and time-consuming. This work presents a fracture-surface-based reassembling method, which is composed of SiamesePointNet, principal component analysis (PCA), and deep closest point (DCP), and is named SPPD. Firstly, SiamesePointNet is proposed to determine whether a pair of point clouds of 3D Terracotta Warrior fragments can be reassembled. Then, a coarse-to-fine registration method based on PCA and DCP is proposed to register the two fragments into a reassembled one. The above two steps iterate until the termination condition is met. A series of experiments on real-world examples are conducted, and the results demonstrate that the proposed method performs better than the conventional reassembling methods. We hope this work can provide a valuable tool for the virtual restoration of three-dimension cultural heritage artifacts.
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