True-Orthophoto for Hamburg City
In 2018, the Landesbetrieb Geoinformation und Vermessung (LGV) commissioned BSF Swissphoto to carry out a photo flight over the city of Hamburg to produce orthophotos with a resolution of 5 cm. The entire city area (800 km2) was flown. A special feature and novelty in this project was the large-scale calculation of a digital surface model (bDOM) as well as the generation of a TrueOrthophoto with the software SURE from nFrames.
The production of the True-DOP relies on a novel working process, which can be described in the individual steps: analysis, dense cloud calculation/ 3D point cloud creation, DSM creation (bDOM calculation) as well as the calculation of the actual TrueDOP. In the Dense-Cloud calculation process, the semi-global matching algorithm (SGM) is used to generate a compressing 3D point cloud in TIN from the aerial images. Each point in the point cloud has RGB values. A bDOM (DSM) is then processed from the 3D point cloud in a regular grid. The last step is the calculation of the final TrueDOP (SURE Ortho Refined).

Lidar data and aerial images for Finland

Aerial data acquisition at Shiphol airport

Digital orthophoto Netherlands

Lidar data acquisition of power lines

Elevation models and orthophotos in Africa

Night shifts for a digital terrain model in Frankfurt

True-Orthophoto for Hamburg City

Airborne data acquisition in Norway

Aerial data acquisition along a railway

Airborne Laserscanning & Orthophoto

Mapping of Findel glacier changes

Snow management based on a digital ground model

Current geodata Canton Thurgau

Airborne Laserscanning Niedersachsen

Airborne Laserscanning Niedersachsen, Friesland

Airborne Laserscanning Baden-Württemberg

Aerial image acquisition Baden-Württemberg

Airborne Laserscanning Bayern

Current geodata Canton Thurgau

Aerial flight Nordrhein-Westfalen

Airborne Laserscanning Thüringen

Aerial image acquisition Saxony

Current geodata Canton Thurgau

Aerial image acquisition Schleswig-Holstein

Airborne Laserscanning Mecklenburg-Vorpommern

Aerial image acquisition Brandenburg
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All references
Lidar data and aerial images for Finland

Aerial data acquisition at Shiphol airport

Digital orthophoto Netherlands
