Aerial photography [Orthophotography] — Department of Calvados — 2001

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Dataset information

Country of origin
Updated
2022.03.30 02:13
Created
2022.03.30
Available languages
French
Keywords
calvados, haute-resolution, photo-aerienne
Quality scoring
165

Dataset description

The 2001 orthophotograph was produced by the Calvados Department and offers many advantages: — spatial planning: land tenure, land use and new communication channels; — environment: coastal and forest observatory, bocage management; — communication: visualisation of the evolution of the territory. The 2001 orthophotograph was freely distributed under an open license with financial support from the Calvados Department. The original files distributed by the Department of Calvados under Open License are: — projection NTF (Paris)/Lambert zone I (EPSG: 5707); — in the “lossless” ECW format per slab of 2.5 km x 6 km; — with a resolution of one pixel = 30 cm; — compressed as a zip archive. Below you will find links to access “multi-party” files for free download. To unzip “multi-part” files: — Make sure you have downloaded all the parts: 001, 002, 003... — Put all parts in the same directory — Click on file 001 (e.g. ortho_2001.zip.001). No need to click 002, 003, 004... Open file.001 opens all other parts of the archive If you have an error there is a good chance that one of your files was only partially downloaded. In order to facilitate the use of the tiles composing the orthophoto 2001, we also offer a pyramid in GeoPackage OGC format in lambert 93. **Collection context** gdalbuildvrt D:\4_Ortho_2001\2001.vrt -addalpha -srcnodata 255 -hidenodata -a_srs EPSG:5707 D:\4_Ortho_2001\data\*.ecw gdalwarp D:\4_Ortho_2001\2001.vrt D:\4_Ortho_2001\2001.gpkg -s_srs EPSG:5707 -t_srs EPSG:2154 -r cubic -of gpkg gdaladdo -r cubic D:\4_Ortho_2001\2001.gpkg 4 16 64 256 For more information, see [the metadata on the Isogeo catalog](https://open.isogeo.com/s/434296189d794266a04a8678e256f0c4/HiLeps3y1qrSx6aTDmKyp0spGPix0/r/c2780f3e1ab940c89a97456900fc0b98).
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