The ORTHO HR is a collection of digital mosaics of color orthophotos rectified in Lambert 93 projection. The ORTHO HR product is available in TIFF (Tagged Image File Format) at 20 cm resolution and 1 km x 1 km slabs, or ECW (Enhanced Compressed Wavelet) in 5 km x 5 km slabs.
OPenIG broadcasts IGN’s 2018 ortho HR in JPEG 2000 format. For more information on the JPEG 2000: http://professionnels.ign.fr/l-ign-passe-au-jpeg2000 For more information on ortho HR: http://professionnels.ign.fr/orthohr
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