非量测相机影像三维模型构建及精度检验

3D model construction of non-metric camera images and its accuracy test

针对三维模型构建投资大、周期长、技术难度较高的问题,该文提出了基于Agisoft PhotoScan的非量测相机影像三维模型构建及精度检验方法。在对非量测数码相机数据进行预处理的基础上,利用Agisoft PhotoScan软件进行数据定向、点云提取、建立不规则三角网及数字高程模型和数字正射影像的制作;根据生成的数字高程模型和正射影像建立研究区域的三维场景模型。实验结果证明,该方法可快速建立高精度三维模型,缩短建模时间并降低投资成本。

Aiming at the problem of large investment,long period and high difficulty in 3D model building,this paper proposed a method of 3D model constructing and accuracy testing of non-metric camera images by using Agisoft PhotoScan.The Agisoft PhotoScan software was used for data orientation,point cloud extraction,establishment of rriangulated irregular network（TIN）,digital elevation model（DEM）and digital orthophoto map（DOM）;then the 3D model of research area could be established based on DEM and DOM.Experimental results showed that a 3Dmodel of high precision could be rapidly established by using this method,by which the construction duration was shortened and the relevant investment was reduced.