A photogrammetric method for monitoring sandbank movement

Zhaohui Deng; Shinichi Takao

doi:10.1117/12.764691

7 August 2007 A photogrammetric method for monitoring sandbank movement

Zhaohui Deng, Shinichi Takao

Proceedings Volume 6754, Geoinformatics 2007: Geospatial Information Technology and Applications; 67541D (2007) https://doi.org/10.1117/12.764691
Event: Geoinformatics 2007, 2007, Nanjing, China

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.

Citation Download Citation

Zhaohui Deng and Shinichi Takao "A photogrammetric method for monitoring sandbank movement", Proc. SPIE 6754, Geoinformatics 2007: Geospatial Information Technology and Applications, 67541D (7 August 2007); https://doi.org/10.1117/12.764691

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