基于点云特征提取的薄壁文物碎片配对研究  

STUDY ON THIN WALL CULTURAL RELIC FRAGMENT PAIRING BASED ON POINT CLOUD FEATURE EXTRACTION

作　　者：刘恩盛 罗春泳 程小龙 黄玉花 戴维康[3] 张宏 LIU En-sheng;LUO Chun-yong;CHENG Xiao-long;HUANG Yu-hua;DAI Wei-kang;ZHANG Hong(School of Building Engineering,Jinggangshan University,Ji’an,Jiangxi 343009,China;College of Civil Engineering and Surveying,Jiangxi University of Science and Technology,Ganzhou,Jiangxi 343000,China;Shanghai Museum,Shanghai 200003,China;The Ninth Geological Brigade of Jiangxi Provincial Geological Bureau,Nanchang,Jiangxi 330000,China)

机构地区：[1]井冈山大学建筑工程学院,江西吉安343009 [2]江西理工大学土木与测绘学院,江西赣州341000 [3]上海博物馆,上海200003 [4]江西省地质局第九地质大队,江西南昌330000

出　　处：《井冈山大学学报（自然科学版）》2023年第5期86-92,共7页Journal of Jinggangshan University (Natural Science)

基　　金：国家自然科学基金项目(41662018);江西省高校人文社会科学研究2022年度项目(KG22101);江西省自然科学基金青年项目(20224BAB212025);吉安市指导性科技计划项目(吉市科计字[2022]6号21)。

摘　　要：针对考古发掘现场堆积在一起的陶瓷碎片难以修复拼接,以及薄壁碎片断裂面特征难以提取的问题,提出了一种综合碎片点云多种特征提取与粗糙集模型进行约简分类的方法。该方法先采用最小半径移动球和三维中心滤波圆弧拟合的方法,分别获取碎片边缘和内部几何特征,再结合颜色纹理及材质等特征要素,通过决策表约简分类为文物碎片重建匹配提供条件。与现有依赖对象单一特征的配对方法不同,本方法在碎片存在磨损甚至缺失等情形下,能将混杂在一起的隶属于多器物薄壁文物碎片进行有效分类配对。In view of the problems that the ceramic fragments piled together in the archaeological excavation site are difficult to repair and splice,and the fracture surface characteristics of the thin-wall fragments are difficult to be extracted,in this paper,a method of reducing and classifying based on multiple features extraction of debris point cloud and rough set model is proposed.Firstly,the minimum radius moving sphere and the 3d central filtering arc fitting method are used to obtain the edge and internal geometric features of debris,respectively,combining with color,texture and material features,the decision table can be used to reduce the classification and provide the conditions for the reconstruction and matching of cultural relic fragments.Compared with the existing single feature matching method,this method can effectively classify and match the debris belonging to multiobjects under the conditions of debris wear or even missing.

关 键 词：薄壁文物碎片 特征提取 三维中心滤波圆弧拟合 粗糙集模型 

分 类 号：P232[天文地球—摄影测量与遥感]