期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2004
卷号：XXXV Part B3
页码：595-600
出版社：Copernicus Publications
摘要：Automatic Aerial Triangulation (AAT) is an increasingly interesting research topic. Most experiments have been carried out with a view to testing accuracy and reliability of matching methods and it is thought that efficiency is directly related to successful automation and increased accuracy. In the project presented here, we experimented with different scales and their combinations. The project, the results and experiences of Automatic Digital Aerial Triangulation using images of different scales of the National Technical University of Athens (N.T.U.A) campus are described. The entire area of the campus is covered by 1:3500, 1:6000 and 1:8000 image scales taken on the same day. The detailed aims of the project were to investigate, the geometric stability of the blocks, the accuracy of the tie points and the derived orientation parameters. The program ISAT (ImageStation Auto Triangulation) of Z/I Imaging was employed in this project, in order to adjust various block combinations. Firstly, both a manual and an AAT solution for the 1:3500 block were performed. The computational time was about 3 minutes per image and the value was 0.30-0.35 pixel. Secondly, AAT was applied to scales 1:6000 and 1:8000 and it was observed that for the 1:8000 images a less accurate solution was obtained. Moreover, the combination of 1:3500 and 1:8000 image scales failed to provide a solution probably because the software splits the block in two parts due to different resolutions. The combination of 1:6000 and 1:8000 image scales gave a solution with impressive results. However, user intervention was necessary. Finally, a comparison of the above results with those derived from an analytical solution of the same area and using the same images has been carried out
