Theory and reality of direct georeferencing in national coordinates
Theory and reality of direct georeferencing in national coordinates
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DOI：
10.1016/j.isprsjprs.2007.09.002
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发表时间：
2008-03-01
影响因子：
12.7
通讯作者：
Legat, Klaus
中科院分区：
文献类型：
--
作者：
Skaloud, Jan;Legat, Klaus
本文重点研究了通过直接地理参考(DG)获得的传感器外方位参数到国家参考系的转换以及随后用于测绘目的的投影。解释了所需的步骤，重点是尽量减少地球曲率引起的扭曲和地图投影不可避免的长度扭曲。我们首先回顾了处理DG引起的垂直失真的理论可能性，然后介绍了一种专门开发的补偿技术。然后，我们展示了这种补偿对小比例尺和大比例尺测绘项目的影响。最后，我们提供了与两种主要方法的比较，并展示了这些方法如何从高度校正的扩展建模中受益。(C)2007年国际摄影测量和遥感学会(摄影测量和遥感学会)。爱思唯尔出版，版权所有。
This paper focuses on the transformation of the sensor's exterior orientation parameters obtained by direct georeferencing (DG) to national reference frames and their subsequent projection for mapping purposes. The required steps are explained and the emphasis is put on the minimization of distortions arising from the curvature of the earth and the inevitable length distortion of the map projection. We recall first the theoretical possibilities of dealing with the vertical distortions due to DG and then introduce a specifically developed technique for their compensation. Afterwards, we demonstrate the influence of such compensation on real examples of small- and large-scale mapping projects. Finally, we offer a comparison with two leading methods and show how these could benefit from extended modeling of the height correction. (C) 2007 International Society for Photogrammetry and Remote Sensing, Inc. (ISPRS). Published by Elsevier B.V. All rights reserved.