基于Coarse-to-Fine金字塔理论自动提取DEM的探讨和研究

在数字摄影测量中,航摄影像在空中三角测量后,在对影像进行正射纠正之前需要计算出地表面的数字高程模型(Digital Elevation Models DEM),利用计算机,根据相关算法,如何自动、快速、高效、高精度地计算出DEM是学者们研究的一个重要课题,本文对运用Coarse-to-Fine理论如何实现自动快速提取地面的数字高程模型进行探讨和研究。

Automatic Mensuration of Digital Elevation Models in the Intergraph Digital Photogrammetric System

In Digital Photogrammetry,after aeria triangular surveying we need firstly calculate and define of Digital Elevation Models（DEM） of the terrain before correcting the aerographic image,it is an important academic research question for discussion to scholars how to carry out the Mensuration of Digital Elevation Models of the terrain automatically,quickly and with high efficiency。 In this article we will discuss and research the means and theoretics how to obtain the DEM of the terrain quickly when we apply the theory of Coarse-to-Fine。