利用计算机图形学、虚拟现实技术解决破损兵马俑虚拟复原问题，申请者已开展多年技术研究，在一号坑三次发掘中数字化拼合了82个兵马俑。本课题针对系统存在的碎片分类不准确、拼接复原效率低等瓶颈，提出基于全局优化策略的改进的虚拟复原方法。研究涉及分类、拼接、修复三方面：①基于机器学习理论，研究文物模型一致性分割与标注方法，建立高精度兵马俑模型训练数据库，提出多特征融合的文物模型分类方法，为破损兵马俑的虚拟拼接和复原过程提供约束和指导；②突破两两拼接方法局限，依据断裂处的多特征信息，构建破损兵马俑智能虚拟拼接理论方法，建立多碎片整体拼接抽象模型；③依据已复原模型库的先验知识，实现两类修复方法（基于形状匹配的模型修复和基于形状分析的对称修复），支持全局优化的破损兵马俑重建与虚拟复原。课题研究运用数字几何方法，构建破损文物数字化复原的新体系，应用于兵马俑虚拟复原示范，可推广到其它方面，理论和应用意义显著。

Using computer graphics and virtual reality technology to solve the problem of virtual restoration of damaged cultural relics, applicant engaged in the recovery technology research of damaged Terra-cotta Warriors for many years. Our groups have assembled 82 3D models of Terracotta Warriors and Horses. This project aimed at the bottle net problem in the system such as low accurate fragments classification, low efficiency of fragment re-assembly and recovering, we put forward improved virtual restoration method based on global optimization strategy. The research related to classification, fragment re-assembly and restoration: ①Based on the theory of machine learning, my group researched on the method of consistent segmentation and labeling of cultural relics model, building high-accuracy Terra Cotta Warriors model training database ,put forward classification method of multiple cues combination for cultural relic models, this will provide constraints and guidance for fragment re-assembly and restoration; ②Break through the limitation of fragment re-assembly method, according to multi-feature of surface of fracture, construct multi-fragments global re-assembly abstract prototype; ③On the basis of prior knowledge of restored model library, achieve Two types of restoring methods(model restore based on shape matching and symmetrical restore based on shape analysis), this would support global optimization to the reconstruction and virtual restoration of damaged Terracotta Warriors. Our topic builds new architecture of damaged cultural relic's digital restoration by researching digital geometric methods, and applied to the Terra Cotta Warriors virtual restoration or other aspects, which has significant theory and application value.