ORFEO Preparatory Programme Object database development
Transcription
ORFEO Preparatory Programme Object database development
ORFEO Preparatory Programme Object database development using VHR images ORFEO - CNES Toulouse 1 Objective Development of a predefined object catalogue Catalogue can be a support for algorithmic tests of extraction information tools for the validation of these tools by thematic experts Catalogue interesting different themes considered in Orfeo Preparatory Programme Sea & Coastal areas Hydrology Risk & Humanitarian aid Forest Geology & Geophysics Agriculture Cartography & town and country planning Information sources ORFEO - CNES Toulouse QuickBird images used as basic information in Orfeo thematic studies Reports and presentations prepared by the thematic groups Thematic studies reports 2 Development process Development of the list of objects of interest Drafting of a first list using reports and presentations of GT (objects related to specific themes) Addition of generic objects showing a multi-thematic interest Validation by CNES and GT experts Database specification Content Structure Format Test on 2 sites Object identification by photo-interpretation Automated extraction of the associated « imagettes » Validation of the structure and format by CNES Production of the whole database Object identification by photo-interpretation Validation of these objects and possible enhancement by the GT team leaders ORFEO - CNES Toulouse 3 Database specifications Study areas Arles (2 images) Genève Boumerdès (3 images) Saint-Gilles (2 images) Boigneville Massif des Maures Calanques de Marseille Peyrat le Château Cannes Salon de Provence (2 images) Cévennes (2 images) Villamblain (2 images) Durance (3 images) Yard ORFEO - CNES Toulouse 4 Database specifications Nomenclature 4 level hierarchy (similar to Corine Land Cover) from the broadest meaning to the most accurate one Example : Level 1 : Sealed areas Level 2 : Sport facilities Level 3 : Swimming-pool Level 4 : Collective swimming-pool from the largest object to the smallest one Example : ORFEO - CNES Toulouse ➮ ➮ ➮ ➮ ➮ ➮ ➮ Level 1 : Road and rail infrastructure Level 2 : Airport Level 3 : Airport terminal 5 Database specifications Content QuickBird images Image description files date number of bands location acquisition conditions size number of identified objects per level Image extracts corresponding to identified objects Image extract description files input image position input area dimensions object type Format Images : BSQ Image extracts : 4 band TIFF Description files : text ORFEO - CNES Toulouse 6 Database specifications Structure by test site (XXXX : test site acronym ) (A1 : level 1 object) (A11 : level 2 object) (A111 : level 3 object) (A1111 : level 4 object) ORFEO XXXX XXXX_AAAAMMJJJ XXXX_AAAAMMJJJ XXXX_A1 XXXX_objects XXXX_A1 XXXX_image XXXX_B1 XXXX_C1 XXXX_D1 …… XXXX_A11 XXXX_A12 XXXX_A13 XXXX_A1111 XXXX_A112 XXXX_A1112 XXXX_A113 XXXX_A1113 XXXX_A114 XXXX_A1.tif XXXX.txt XXXX_A14 …… XXXX_A111 XXXX.bsq XXXX_A1.txt …… XXXX_A1114 …… ORFEO - CNES Toulouse 7 Some statistics about the data base Number of objects per level ORFEO - CNES Toulouse Level Number of objects 1 285 2 1 352 3 1 674 4 622 8 Some statistics about the data base Number of objects per test site ORFEO - CNES Toulouse Study area Number of object Study area Number of object Arles nord 150 Durance sud 195 Arles sud 205 Genève 355 Boumerdes 1 89 Massif des maures 300 Boumerdes 2 110 Peyrat le Château 105 Boumerdes 3 115 Salon nord 173 Boigneville 170 Salon sud 203 Calanques 160 Saint-Gilles 1 186 Cannes 250 Saint-Gilles 2 192 Cevennes 1 77 Villamblain 1 120 Cevennes 2 133 Villamblain 2 120 Durance nord 174 Yard 210 Durance centre 170 9 Examples Arles Nord test site Dense urban area (A0102) Sealed areas (A01) ORFEO - CNES Toulouse Industrial area (A0104) 10 Examples Cannes test site Runway (poste B010101) Asphalt runway (poste B01010101) Airport terminal (poste B010102) Airpot (Poste B0101) ORFEO - CNES Toulouse Plane (poste B010105) 11