基于Geomagic Studio的石窟寺三维数字化重建

3D Digital Reconstruction of Grotto Temples Based on Geomagic Studio

通过信息技术建立石窟寺三维数字模型可以为修复和保护石窟寺提供数据支持。常规的三维建模技术用于重建结构简单的建筑物尚可,但对结构复杂的石窟寺往往效果不佳。为解决这一工程难题,文章提出一种基于Geomagic Studio的石窟寺三维数字化重建技术,即先在Geomagic Studio中对点云数据进行预处理,创建NURBS曲面,然后经由Rhinoceros软件转换格式,最后在Revit中为石窟寺模型添加属性信息。此方法首先实现了直接基于点云数据生成带有构件各相关信息的BIM模型,建模的精度和效率大大提高。其次,将带有裂隙面积的红外二维热成像图与三维点云模型进行融合,可更加直观准确地指导施工修缮。文章以石窟寺某洞窟为例,说明该技术的可行性和有效性。

The establishment of 3D digital model of grotto temples through information technology can provide data support for the restoration and protection of grotto temples.Conventional 3D modeling techniques are effective in reconstructing simple structures,but ineffective for complex structures like grotto temples.In order to solve this engineering problem,this paper proposes a 3D digital reconstruction technique of grotto temple based on Geomagic Studio.This technique involves preprocessing point cloud data in Geomagic Studio,creating NURBS surface,transferring to the Rhinoceros software,and finally adding attribute information for the grotto temple model in Revit.In this method,a BIM model with relevant information of components is generated directly from the point cloud,and the accuracy and efflciency of modeling are greatly improved.Secondly,the infrared twodimensional thermal imaging with crack area is fused with the threedimensional point cloud model,which can guide the construction and repair more intuitively and accurately.Using a grotto of grotto temples as an example,this paper illustrates the feasibility and effectiveness of the technique.