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Proceedings Paper

A photogrammetric method for monitoring sandbank movement
Author(s): Zhaohui Deng; Shinichi Takao
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Paper Abstract

An automatic stereopair exposure system (ASES), which employs non-metric digital camera and control bars, was developed aiming at monitoring sandbank movement in a way of non-contact, succession, low cost with satisfied accuracy. Control bars was placed in front of camera, replacing the conventional ground control points (GCPs); nonmetric digital camera, computer-controlled exposure without using total station at monitoring time, and automatically locating feature point serve a solution to non-contact monitoring. A theoretical experimentation for accuracy test showed that relative accuracy from 1/1500 to 1/20000 could be available, with the variation of space resection to calculate the exterior orientation parameters. In the practical application of Enshu-nada coast, estuary of Kiku River of Shizioka Prefecture, Japan, the method of fixing camera position provided height direction with an accuracies of 1/1442 and 1/7211, to the longest photographic distance and the shortest photographic distance, respectively, compared with total station (TS). The method is flexible and is accurate enough for monitoring sandbank movement.

Paper Details

Date Published: 7 August 2007
PDF: 9 pages
Proc. SPIE 6754, Geoinformatics 2007: Geospatial Information Technology and Applications, 67541D (7 August 2007); doi: 10.1117/12.764691
Show Author Affiliations
Zhaohui Deng, Nanjing Univ. (China)
Shinichi Takao, BasicEngineering Co., Ltd. (Japan)

Published in SPIE Proceedings Vol. 6754:
Geoinformatics 2007: Geospatial Information Technology and Applications

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