geocatalogue.geoportail.lu
LiDAR tiles 2017
This layer contains the subdivision into tiles of the LiDAR data from the 2017 prototype. The data is issued from a three-dimensional survey based on LiDAR (Light Detection and Ranging) technology. From a technical point of view, the LiDAR system, or airborne LiDAR measures the distance between the ground and the aircraft using an infrared laser beam. The resulting data is processed to produce a three-dimensional coordinate file (point cloud) with a decimeter accuracy per pixel on the ground. For this prototype around the Nordstad region, the flyover was carried out on April 9, 2017 with a density of 15 points per square meter and a horizontal accuracy of +/- 3 cm and vertical of +/- 6 cm. The density indicates the pulses sent from the system, the density of the points measured can be higher depending on the type of surface scanned (Single reflection/multiple reflection). Point cloud - Data structure The raw data is structured in the form of tiles with a spatial extent of 500 mx 500 m, they contain on average between 5 and 7 million measured points. To simplify the downloading of the data, the raw tiles have been grouped together in the form of compressed files (zip) comprising up to 9 raw tiles (representing a spatial extent of 1500 m × 1500 m). The assembly table with the zip files allows an overview of the grouped tiles. Point cloud - point classification The point cloud is classified into 9 different categories: [0] - Unclassified points [2] – Ground [3] - Low vegetation [4] - Average vegetation [5] - High vegetation [6] - Buildings [7] - Low Points (noise) [9] - Water [13] - Bridges, Footbridges, Viaducts [15] - Powerlines The number in [] indicates the Class ID.
Simple
- Citation identifier
- / 3c565aff-7394-4d51-915c-0e06dde7765a
- Presentation form
- Digital map
- Status
- On going
- Point of contact
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Organisation name Individual name Electronic mail address Role Administration du Cadastre et de la Topographie
Administration du Cadastre et de la Topographie
Point of contact
- Maintenance and update frequency
- As needed
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Entités au Grand-Duché de Luxembourg
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Grand-Duché du Luxembourg
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- Keywords
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LiDAR, Laser scan, point cloud, 3D, tiles
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- Keywords
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geoportail.lu
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- Keywords
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geoportail.lu themes
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Main
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geoportail.lu structure
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Main>Digital elevation model (BD-L-LiDAR)>LiDAR Prototype 2017 (Nordstad region)
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Main>Land surface>Digital elevation model (BD-L-LiDAR)>LiDAR Prototype 2017 (Nordstad region)
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- Spatial representation type
- Vector
- Denominator
- 0
- Character set
- UTF8
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- Reference system identifier
- EPSG / http://www.opengis.net/def/crs/EPSG/0/2169
- OnLine resource
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Protocol Linkage Name OGC:WMS-1.3.0-http-get-map
https://wms.geoportail.lu/public_map_layers/service 1787
WWW:LINK-1.0-http--link
https://data.public.lu/fr/datasets/lidar-projet-pilote-dun-releve-3d-du-territoire-luxembourgeois/ OGC API-Features
https://features.geoportail.lu/collections/1787 OGC API - Features
- OnLine resource
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Protocol Linkage Name https://map.geoportail.lu/theme/main?version=3&zoom=8&X=667917&Y=6394482&lang=fr&layers=1787&opacities=1 LiDAR tiles
Metadata
- File identifier
- 3c565aff-7394-4d51-915c-0e06dde7765a XML
- Metadata language
- Français
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
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dataset
- Date stamp
- 2021-02-04T22:49:12Z
- Metadata standard name
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ISO 19115:2003/19139
- Metadata standard version
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1.0
- Metadata author
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Organisation name Individual name Electronic mail address Role Administration du Cadastre et de la Topographie
Administration du Cadastre et de la Topographie
Point of contact
- Other language
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Language Character encoding Luxembourgish; Letzeburgesch UTF8 English UTF8 German UTF8 French UTF8
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