Post by rahim on Feb 1, 2024 11:27:41 GMT
Individual buildings as generalized floor plans, but rather based on 3D measurements. The almost precise accuracy within the 3 different dimensions, the extensive coverage of the catchment area and the almost accurate, realistic representation of the buildings make this new model an extremely important and high-quality basic data set for various applications.The swissBUILDINGS3D 2.0 vector data is subject to a tracking cycle of 6 years and is therefore completely updated every 6 years. The data is recorded fully automatically (floor plan and facade).
Only the shape of the roofs is added manually.How are 3D DB to Data vector data created?The data set is based on the current digital aerial photography strips from swisstopo. The aerial images are taken by satellites or aircraft and are a snapshot of the underlying landscape. These aerial images then serve as the basis for further geometric processing into a 3D model. There is a distinction between orthophotos and 3D aerial photographs.Orthophotos are true-to-scale and distortion-free images of the landscape that can be used for precise coordinate.
Area and distance calculations. They have a high resolution and are generally very up-to-date.3D aerial photography strips, on the other hand, usually depict individual sub-areas, with the landscape being recorded in strips from different perspectives. The exact position of each point or building can then be determined from this.This data is then suitable for further processing into a 3D data set. In order to achieve the highest possible accuracy in the swissBUILDINGS3D 2.0 data set, a photogrammetric recording method based on stereo aerial images was used .
Only the shape of the roofs is added manually.How are 3D DB to Data vector data created?The data set is based on the current digital aerial photography strips from swisstopo. The aerial images are taken by satellites or aircraft and are a snapshot of the underlying landscape. These aerial images then serve as the basis for further geometric processing into a 3D model. There is a distinction between orthophotos and 3D aerial photographs.Orthophotos are true-to-scale and distortion-free images of the landscape that can be used for precise coordinate.
Area and distance calculations. They have a high resolution and are generally very up-to-date.3D aerial photography strips, on the other hand, usually depict individual sub-areas, with the landscape being recorded in strips from different perspectives. The exact position of each point or building can then be determined from this.This data is then suitable for further processing into a 3D data set. In order to achieve the highest possible accuracy in the swissBUILDINGS3D 2.0 data set, a photogrammetric recording method based on stereo aerial images was used .