Complex architectural scenes suffer in clarity due to points in front of and behind other data. Occlusion culling has been implemented in ScanMaster to improve visual clarity in point clouds. The image below shows a point cloud of a complex building. The aim is to examine the wall either side of the archway (viewpoint and direction annotated).
Laser scanning collision investigation
TERRADAT recently untertook a trial of laser scanning for a two car collision with the help of South Wales Police.
The Topcon GLS-1000 laser scanner was used on two stations either side of the scene. The stations were referenced using the BS/OBS method (stations and one BS target were georeferenced with a total station).
A test was also carried out to investigate the use of a grey masking spray to increase the reflectance of the car body panels. Click here to view the data and photographs from the survey.
The Topcon GLS-1000 / GLS-1500 laser scanner uses a unique technology called Precise Scan Technology (see FAQ). The combination of phase and pulse technologies gives our scanner the ability to superbly map texture in scan targets such as building structures. The results below show a comparison of the GLS1000 and another rival scanner. Continue reading »
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