The basic principle of reconstructing and analyzing the objects is studied by acquiring the image tuinformation from the ordinary camera and calculating the geometric information of the three-dimensional objects.This paper introduces a workflow of Agisoft Photoscan, and designs an experiment.The image is processed by Agisoft Photoscan software, and the 3D point cloud data is obtained.The three-dimensional reconstruction of the object is carried out.The validity of the proposed method is verified.The 3D coordinate values of the five contrast points are extracted and measured, and the error of the model is verified to be within 1 cm.The method can be applied to the surface complex modeling of alien objects.%通过普通相机获取图像信息,计算三维空间物体的几何信息,重建和分析物体的基本原理;了解图像处理软件Agisoft Photoscan的工作流程,并设计实验;通过未检校的普通数码相机对某雕塑头像和亭子进行拍摄,使用Agisoft Photoscan软件对图像进行处理,得到三维点云数据,进行物体三维重建,验证三维重建的有效性;通过提取和实测预设对比点的三维坐标值,求取误差,验证在百幅以内的图像建模误差在1 cm以内.此方法可应用到表面复杂的异形物体建模中.
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