Extraction of tidal channel networks from aerial photographs alone and combined with laser altimetry
| Autor: | David C. Mason, Tania Ruth Scott, B. Sreenivas, Bharat Lohani |
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| Rok vydání: | 2006 |
| Předmět: | |
| Zdroj: | International Journal of Remote Sensing. 27:5-25 |
| ISSN: | 1366-5901 0143-1161 |
| DOI: | 10.1080/01431160500206692 |
| Popis: | Tidal channel networks play an important role in the intertidal zone, exerting substantial control over the hydrodynamics and sediment transport of the region and hence over the evolution of the salt marshes and tidal flats. The study of the morphodynamics of tidal channels is currently an active area of research, and a number of theories have been proposed which require for their validation measurement of channels over extensive areas. Remotely sensed data provide a suitable means for such channel mapping. The paper describes a technique that may be adapted to extract tidal channels from either aerial photographs or LiDAR data separately, or from both types of data used together in a fusion approach. Application of the technique to channel extraction from LiDAR data has been described previously. However, aerial photographs of intertidal zones are much more commonly available than LiDAR data, and most LiDAR flights now involve acquisition of multispectral images to complement the LiDAR data. In view of t... |
| Databáze: | OpenAIRE |
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