L'ORTHO HR IRC est une collection de mosaïques numériques d'orthophotographies en infrarouge rectifiées en projection Lambert 93. Le produit ORTHO HR IRC est livrable au format TIFF (Tagged Image File Format) à la résolution de 20 cm et en dalles de 1 km x 1km, ou au format ECW (Enhanced Compressed Wavelet) en dalles de 5 km x 5km.
OPenIG diffuse l'ortho HR IRC 2018 de l'IGN dans le format JPEG 2000. Pour plus d'informations sur le JPEG 2000 : http://professionnels.ign.fr/l-ign-passe-au-jpeg2000. Pour plus d’information sur l’ortho HR : http://professionnels.ign.fr/orthohr.
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