石窟寺文物的三维精细化建模研究  

Research on 3D refinement modeling of cultural relics in grotto temples

作　　者：郑国强 王光生 王万忠 Zheng Guoqiang;Wang Guangsheng;Wang Wanzhong(School of Surveying and Geo-Informatics,Shandong Jianzhu University,Jinan 250101,China;Shandong Ancient Building Protection Research Institute,Jinan 250001,China)

机构地区：[1]山东建筑大学测绘地理信息学院,山东济南250101 [2]山东省古建筑保护研究院,山东济南250001

出　　处：《山东建筑大学学报》2023年第4期75-83,共9页Journal of Shandong Jianzhu University

基　　金：国家自然科学基金青年基金项目(51808320);山东省研究生创新计划项目(SDYY6031)。

摘　　要：石窟寺文物处于半封闭空间状态,窟内造像结构复杂多样,采用多种建模手段有助于获取石窟寺的高保真模型。文章以驼山石窟一号窟为研究对象,提出以站式扫描点云为整体控制网,影像密集匹配点云和手持精细点云为主要数据源,利用经典ICP算法进行点云配准和改进的薄板样条函数进行纹理映射的融合建模方法。结果表明:所提多源数据融合建模方法能充分保留点云的几何精度和影像的纹理精度,实现石窟寺文物的高精度、高分辨率建模;改进的薄板样条函数纹理映射方法避免了特征复杂位置纹理错位、拉花等现象,有效地解决了点云重建模型纹理分辨率低的问题。The cultural relics in grotto temples are in a semi-enclosed spaces,and the structures of status in grotto temples are complex and diverse.Using a variety of modeling methods can help to obtain high-fidelity models of grotto temples.Taking the Cave No.1 of Tuoshan Grottoes as the research object,this paper proposes a fusion modeling method by taking the station scanning point cloud as the overall control network,the image dense matching point cloud and the hand-held fine point cloud as the main data sources,using the classical ICP algorithm for point cloud registration and employing the improved thin plate splines for texture mapping.The results show that the proposed multi-source data fusion modeling method can fully preserve the geometric accuracy of point cloud and the texture accuracy of image,and realize the high-precision and high-resolution modeling of cultural relics in grotto temples.Furthermore,the improved thin plate splines texture mapping method avoids the texture dislocation and knurling at complex feature positions,effectively addressing the problem of low texture resolution in point cloud reconstruction models.

关 键 词：石窟寺文物 多源数据融合 加权薄板样条函数 三维精细化建模 

分 类 号：P232[天文地球—摄影测量与遥感]