Global Geospatial Conference 2012 - Global Spatial Data ...

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6/23/12 • Faster processing – 1 object vs 100 pixels • Relationnal analysis – Object A is close to object B • Geometrical features – Invariance to rotation, translation and possibly scale – Hierarchical shape relations is discriminant 19 • Building detection – Rescue operations – Identification of types (residential, commercial, industrial) • Damage evaluation – Planning – Reconstruction • What is needed? 20 10
6/23/12 • Segmentation (FLST+Scale) and classification (SVM) of shapes Object-based Pixel-based – Building Producer Accuracy (%) 93.6 94 – Not building User Accuracy (%) 93.3 88 False Positive Rate (%) 4.5 7.4 • Good results with high User Accuracy and low Execution time (s) 28,6 2416,6 False Positive Rate • Fast 21 • False positives: – A few vegetation spots – Some shadows • False negatives – Gabled oofs (big slopes) – Roofless buildings 22 11
Page 1 and 2: 6/23/12 Québec, 14-17 May 2012 Glo
Page 3 and 4: 6/23/12 • Members - ESA: European
Page 5 and 6: 6/23/12 • Tasking of satellites (
Page 7 and 8: 6/23/12 • Synthetic Aperture Rada
Page 9: 6/23/12 • Associate shape for eac
Page 13 and 14: 6/23/12 City block damage evaluatio

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