Plants manquants dans des cultures. Un algorithme de localisation à partir d'image à très haute résolution spatiale

The purpose of this work is to localise missing individuals onto VHR aerial images of agricultural parcels in the case of discontinuous crops which are planted according to a squared-grid pattern. The global approach considers the planted parcel as a topological graph of vertices whose geometrical relationships are defined by rules according to orientation and length. The system initiates the graph, then it adds missing vertices on an iterative basis. Quality indicators are assigned at each added vertex, and several stopping criteria are estimated. Test cases were conducted on three data sets: virtual parcels, olive groves and goblet vineyards. Compared to validation data, the results show an efficient reconstruction of the geometry and satisfactory error; they allow to propose calibration parameters. MOTS-CLÉS : Télédétection ; Traitement d’image ; Semis de points ; Graphe ; Olea europae L.; Vitis vinifera L.