The 2007 ORTHO BD is a database that consists of a mosaic of digital iimages (raster), alone (without cladding or overloading) in color, and indication of georeferencing. It is produced by IGN. It is the result of an analog aerial shot dating from the summer of 2007 orthorectified in projection Lambert II extended and then assembled. It covers the entire Alsace Region. The image resolution (pixel size) is 50 cm. The data is in the form of slabs of 25 km² (ECW file compressed of about 60 MB). the slabs’ right-of-way limits are round km in extended Lambert II. All the slabs contained or intersecting the area corresponding to the boundary of the BDCARTO department are fully available.
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