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Photographies aériennes prises par drone et modèle numérique de terrain : apports pour l'observatoire sur l'érosion de Draix

Abstract : A multidisciplinary team is currently studying erosion in the Draix observatory area, which encompasses several experimental research catchments in mountain areas. The main objective is to improve our knowledge on the spatial and temporal dynamics of erosion processes. This consisted, in part, in developing survey methodologies to map erosion variables and patterns. We tested the capability of low-altitude aerial photographs to extract morphological characteristics of badlands, using high-scale mapping and DEM extraction. This paper focuses on the "Pixy" drone, the cameras and films used, the generation of cartographic products and DEMs, and the accuracy obtained. With a horizontal accuracy of 30 cm, and despite vertical accuracy that needs to be improved, these products demonstrate great potential for obtaining better knowledge and survey of badlands areas. Future research to improve image acquisition and processing is also outlined.
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https://hal.inrae.fr/hal-02680749
Contributor : Migration Prodinra <>
Submitted on : Sunday, May 31, 2020 - 10:39:10 PM
Last modification on : Monday, November 16, 2020 - 8:56:01 PM

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  • HAL Id : hal-02680749, version 1
  • PRODINRA : 36726

Citation

Damien Raclot, Christian Puech, Nicolle Mathys, Bruno Roux, Andres Jacome, et al.. Photographies aériennes prises par drone et modèle numérique de terrain : apports pour l'observatoire sur l'érosion de Draix. Geomorphology, Elsevier, 2005, 1, pp.7-20. ⟨hal-02680749⟩

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