Survey and Classification of Large Woody Debris (LWD) in Streams Using Generated Low-Cost Geomatic Products
| Autor: | Miguel Ángel Moreno, Pablo Rodríguez-Gonzálvez, Damian Ortega-Terol, David Hernández-López |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Geographic information system
river channel management business.industry Computer science photogrammetry large woody debris orthoimage FOSSGIS QGIS Python plugin Geomatics Orthophoto Large woody debris Civil engineering Photogrammetry Work (electrical) General Earth and Planetary Sciences lcsh:Q business lcsh:Science Remote sensing |
| Zdroj: | Remote Sensing, Vol 6, Iss 12, Pp 11770-11790 (2014) Remote Sensing; Volume 6; Issue 12; Pages: 11770-11790 |
| ISSN: | 2072-4292 |
| Popis: | Water authorities are required to have a survey of large woody debris (LWD) in river channels and to manage this aspect of the stream habitat, making decisions on removing, positioning or leaving LWD in a natural state. The main objective of this study is to develop a new methodology that assists in decision making for sustainable management of river channels by using generated low-cost, geomatic products to detect LWD. The use of low-cost photogrammetry based on the use of economical, conventional, non-metric digital cameras mounted on low-cost aircrafts, together with the use of the latest computational vision techniques and open-source geomatic tools, provides useful geomatic products. The proposed methodology, compared with conventional photogrammetry or other traditional methods, led to a cost savings of up to 45%. This work presents several contributions for the area of free and open source software related to Geographic Information System (FOSSGIS) applications to LWD management in streams, while developing a QGIS [1] plugin that characterizes the risk from the automatic calculation of geometrical parameters. |
| Databáze: | OpenAIRE |
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