Semi-automatic detection and labelling of erosion areas using domain knowledge: an appraisal from southeast New Caledonia (SW Pacific)

Isabelle Rouet; Dominique Gay; Michel Allenbach; Nazha Selmaoui; Jonathan Maura; Didier Lille

doi:10.1117/12.804925

19 December 2008 Semi-automatic detection and labelling of erosion areas using domain knowledge: an appraisal from southeast New Caledonia (SW Pacific)

Isabelle Rouet, Dominique Gay, Michel Allenbach, Nazha Selmaoui, Jonathan Maura, Didier Lille

Author Affiliations +

Proceedings Volume 7150, Remote Sensing of Inland, Coastal, and Oceanic Waters; 71500V (2008) https://doi.org/10.1117/12.804925
Event: SPIE Asia-Pacific Remote Sensing, 2008, Noumea, New Caledonia

Abstract

The management of small Pacific coastal territories has become a crucial issue; these are insular units that often display a high level of biodiversity in a context of changing climate and sea-level rise. In order to preserve and protect populations, infrastructure and living resources, there is a need to understand inland processes that may influence the behaviour of coastal systems and, more particularly, active erosion zones. Cartography of stripped surfaces by remote sensing has become routine and we propose here the first step of a method that aims to monitor erosion features using an automated process. Managing catastrophic erosion and/or landslides needs high frequency image acquisition so as to optimize hazard prevention. On the basis of a single remote sensing map, we propose a generic method for automatically assigning expert-designed labels to erosion areas. Our automated process follows three steps: first, we use classical algorithms to detect stripped zones; second, we assign a label to each extracted zone using domain knowledge. Finally, as a post-processing phase, detected and labelled erosion areas are checked by experts. This method has been validated in an erosion-sensitive area of south-eastern New Caledonia.

Citation Download Citation

Isabelle Rouet, Dominique Gay, Michel Allenbach, Nazha Selmaoui, Jonathan Maura, and Didier Lille "Semi-automatic detection and labelling of erosion areas using domain knowledge: an appraisal from southeast New Caledonia (SW Pacific)", Proc. SPIE 7150, Remote Sensing of Inland, Coastal, and Oceanic Waters, 71500V (19 December 2008); https://doi.org/10.1117/12.804925

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