Publication details
Evaluation of a new remote sensing methodology for detailed international mapping in the V4 region
| Authors | |
|---|---|
| Year of publication | 2013 |
| Type | Article in Periodical |
| Magazine / Source | Journal of Landscape Management |
| MU Faculty or unit | |
| Citation | |
| Field | Earth magnetism, geography |
| Keywords | UAV remote sensing photogrammetry 3D model |
| Description | Nowadays, almost every geographic discipline needs to measure geographical data at the field. The same situation is in a fluvial geomorphology. The combination of geomorphology and geoinformatics is a necessity in present time. This article aims to present the latest photogrammetric techniques and procedures that can be applied in fluvial geomorphology. Specifically the use of UAVs (Unmanned Aerial Vehicle) is presented as a source of very accurate geographic data. Based on the orthophoto and 3D terrain models which are generated from the stereo-pairs, it is possible to clearly evaluate the morphological processes that occur in the river channel. One of the conditions is that a very high resolution images are necessary. This article presents specific procedures of preparing of the flight, processes during the flight and subsequent data evaluation. The stereo photogrammetry methods have been known for decades. For using in the UAV photogrammetry, these methods have to be adapted for this specific purpose. The area of interest is a very dynamic part of the Morava River (Czech Republic). In the protected area Litovelske Pomoravi there is a lateral erosion one of a main process in the river channel. This paper also includes a monitoring and evaluation of a meander. The meander has been photographing by the UAV system in two phases: before and after destruction of the meander neck. Photographing with the use of UAVs allows very quick, cheap and accurate morphological evaluation of the fluvial forms. Recommended methods and procedures have to be followed for obtaining the accurate results. |