We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
A New Method of Gold Foil Damage Detection in Stone Carving Relics Based on Multi-Temporal 3D LiDAR Point Clouds.
- Authors
Miaole Hou; Shukun Li; Lili Jiang; Yuhua Wu; Yungang Hu; Su Yang; Xuedong Zhang
- Abstract
The timely detection of gold foil damage in gold-overlaid stone carvings and the associated maintenance of these relics pose several challenges to both the research and heritage protection communities internationally. This paper presents a new method for detecting gold foil damage by making use of multi-temporal 3D LiDAR point clouds. By analyzing the errors involved in the detection process, a formula is developed for calculation of the damage detection threshold. An improved division method for the linear octree that only allocates memory to the non-blank nodes, is proposed, which improves storage and retrieval efficiency for the point clouds. Meanwhile, the damage-occurrence regions are determined according to Hausdorff distances. Using a triangular mesh, damaged regions can be identified and measured in order to determine the relic's total damaged area. Results demonstrate that this method can effectively detect gold foil damage in stone carvings. The identified surface area of damaged regions can provide the information needed for subsequent restoration and protection of relics of this type.
- Subjects
CHINA; STONE carving; GOLD foil; ART damage
- Publication
ISPRS International Journal of Geo-Information, 2016, Vol 5, Issue 5, p60
- ISSN
2220-9964
- Publication type
Article
- DOI
10.3390/ijgi5050060