Reformatted High Resolution Orthophotography [ORTHO® HR] - Department of Calvados - 2016

Description

The ORTHO® HR (High Resolution Orthophotography) of 2016 is a collection of digital mosaics of color orthophotographs, rectified in the specific legal projection adapted to the territory covered. ORTHO® HR 2016 is freely distributed under an open licence thanks to the financial support of the European Union and the Normandy Region. It is requested that all studies carried out from this database include the mention given produced with the support of Europe and the Normandy Region within the framework of the Normandy CRIGE.” The 2016 ORTHO® HR offers many advantages: - Spatial planning: land use, land consumption and new communication routes; - environment: coastal and forest observatory, bocage management; - Communication: visualization of the evolution of the territory. The original files distributed by the IGN on https://geoservices.ign.fr/documentation/diffusion/telechargement-donnees-libres.html#ortho-hr-sub-license-opened under Open License are: - in legal projection (Lambert 93 in mainland France and other specific projection for each French overseas department) - in JPEG2000 format "lossless" per 1km x 1km slab - compressed as a 7z archive (long to decompress for marginal compression gain, the slabs are already compressed) You will find below the links to access the "multi-part" files for free download on the IGN website. To unzip multi-part files: - Make sure you have downloaded all parts: 001, 002, 003... - Put all the parts in the same directory - Click on file 001 (ex: ortho_2016.zip.001). No need to click on 002, 003, 004... Opening the .001 file opens all other parts of the archive If you have an error there is a good chance that one of your files has only been partially downloaded In order to facilitate the use of the tiles composing the orthophoto HR 2016, we also offer a pyramid in GeoPackage OGC format in lambert 93. **Collection method** The Geopakage was produced from the GDAL library gdalbuildvrt D:\8_Ortho_2016\2016.vrt -addalpha -srcnodata 255 -hidenodata D:\8_Ortho_2016\data\*.jp2 gdalwarp D:\8_Ortho_2016\2016.vrt D:\8_Ortho_2016\2016.gpkg -t_srs EPSG:2154 -r cubic -of GPKG gdaladdo -r cubic D:\8_Ortho_2016\2016.gpkg 4 16 64 256 For more information, see [Isogeo Catalog Metadata](https://open.isogeo.com/s/434296189d794266a04a8678e256f0c4/HiLeps3y1qrSx6aTDmKyp0spGPix0/r/1f8e537d3be145948f79a202caeef67a).

Resources

Name Format Description Link
0 https://www.data.gouv.fr/api/1/datasets/r/d85066bb-9c50-4ee7-a8cb-98473580cac8
0 https://www.data.gouv.fr/api/1/datasets/r/cdfd9aca-064a-415e-920b-37b93b01a7b4
0 https://www.data.gouv.fr/api/1/datasets/r/29ef9879-9a14-442d-bc48-fdea7867c921
0 https://www.data.gouv.fr/api/1/datasets/r/600b8b37-c43a-4169-9f01-34ddb69770fe
0 https://www.data.gouv.fr/api/1/datasets/r/85b11e3b-bcd2-41fa-9d20-24d2b84333ba
0 https://www.data.gouv.fr/api/1/datasets/r/41f19901-eef2-4db4-a6e7-0daddbf9c1d8

Tags

  • bd-ortho-ign
  • ign
  • photo-aerienne
  • departement-du-calvados
  • orthophoto
  • calvados
  • haute-resolution

Topics

Categories