Construction and Accuracy Test of a 3D Model of Non Metric Camera Images Using Agisoft PhotoScan
Abstract This paper aims to provide a method of constructing and testing the accuracy of a three dimensional (3D) model for non metric camera images using Agisoft PhotoScan to solve the problems regarding large investment, long processing periods and high technical difficulties. On the basis of data pre processing, this software presents a way of orientating data, extracting point clouds, building Triangulated Irregular Networks (TIN) Digital Elevation Models (DEM) and producing Digital Orthophoto Maps (DOM) From these networks, a 3D model of the research area can be established. The experimental results show a highly precise 3D model can be rapidly established using this method. The construction time is shortened and the relevant investment required to produce the map is reduced. This method is a robust and relatively quick approach to build 3D models which is relevant for many applications.