一种结构对称的破碎青铜文物的数字修复方法  

A digital restoration method for broken bronze artifacts having a symmetrical structure

作　　者：税午阳[1,2] 周明全[1,2] 高飞[3] 曲亮[3] 

机构地区：[1]北京师范大学信息科学与技术学院,北京100875 [2]文化遗产数字化保护与虚拟现实北京市重点实验室,北京100875 [3]故宫博物院,北京100009

出　　处：《文物保护与考古科学》2015年第4期113-117,共5页Sciences of Conservation and Archaeology

基　　金：国家科技支撑计划资助(2012BAH33F04);中央高校基本科研业务费资助(2013YB72);故宫博物院科研基金资助(kt2014-14)

摘　　要：为有效解决结构具有对称性的破碎文物的数字修复问题,本研究利用计算机技术,提出了一种针对结构具有对称性的破碎青铜器文物的数字修复方法。首先利用三维激光扫描仪实现破碎文物的三维建模,然后采用基于特征点集的最小二乘方法计算破碎文物的对称平面,进而利用对称性实现破碎文物的数字修复。针对对称性计算的镜像模型与原始模型几何造型不完全一致的问题,采用非刚性配准方法实现了镜像模型的几何变形。实验结果表明,本方法能够实现破碎文物的数字修复,将为实体修复提供借鉴和指导。This paper proposes a digital method based on computer technology for restoration of broken bronze artifacts having a symmetrical structure. First,a three-dimensional laser scanner is used to construct an artifact model based on currently available information. Second,the symmetryplane of the broken artifact is computed using the least squares method for finding feature points,which are selected manually. Finally,the restoration result is obtained based on the symmetrical structure of the artifact. In order to solve the problem that exists due to the difference in shape between the reflection model based on a symmetrical plane and original incomplete model,a non-rigid registration method is used to warp the reflection model in order to make the final restoration model appropriate. The feasibility and usability of the algorithm is confirmed by experiments. This restoration method can be of use to artifact conservation experts.

关 键 词：破碎青铜器文物 三维建模 对称平面 非刚性配准 数字修复 

分 类 号：K876.41[历史地理—考古学及博物馆学]