An OBIA for fine-scale land cover spatial analysis over broad territories: demonstration through riparian corridor and artificial sprawl studies in France

T. Tormos (1) , S. Dupuy (2) , K. van Looy (1) , E. Barbe (2) , P. Kosuth (2)

1 UR MALY - Milieux aquatiques, écologie et pollutions
2 UMR TETIS - Territoires, Environnement, Télédétection et Information Spatiale

Spatial analysis using fine-scale information over broad territories is essential to define efficient restoration strategies from local to national scale. We designed an OBIA dedicated to produce operationally reliable fine-scale information over broad territories. The originality of our OBIA lies particularly in the top-down approach for the construction of the classification tree and the use of „knowledge-based rules‟ classification technique. The implementation of this OBIA over the two study areas – (i) the Normandy region for riparian area land cover mapping (5600 km² riparian area) and (ii) fours departments over the Languedoc-Roussillon region (22644 km²) – demonstrates the operability of our approach (time-efficient, reproducible, transferable, portable). Broad scale spatial analysis conducted from resulting maps demonstrate the interest of using fine-scale information and highlight that OBIA, following our approach, will be at very short run a broadly applicable method to carry out such analysis.

Mots clés: CORRIDOR; RIPISYLVE; OCCUPATION DU SOL; TOP-DOWN CLASSIFICATION TREE CONSTRUCTION; RULES-BASED CLASSIFICATION; LARGE MAPPING; CLASSIFICATION AUTOMATION; RIPARIAN CORRIDOR; ARTIFICIAL SPRAWL; BROAD SCALE SPATIAL ANALYSIS

Domaines: Sciences de l'environnement

T. Tormos, S. Dupuy, K. van Looy, E. Barbe, P. Kosuth. An OBIA for fine-scale land cover spatial analysis over broad territories: demonstration through riparian corridor and artificial sprawl studies in France. 4th International Conference on Geographic Object-Based Image Analysis (GEOBIA), May 2012, Rio de Janeiro, Brazil. 6 p. ⟨hal-00941793⟩