Working with _Space architects Digital were asked to carry out a 3D laser scan of an industrial Unit in Knaresborough and convert the data to a 3D Revit Model. _Space were particularly interested in the steel structure of the main warehouse. 6 Laser scans were carried out inside the warehouse taking less than 1 hour. When carrying out a laser scan, for every point recorded an intensity value is also collected. This measures the reflectivity of the surface being scanned. However the reflectivity is also affected by the distance the scanner is from the target.
Carrying out multiple over lapping scans from different distances, can result in very blurry results. To overcome this when processing the data, filters were run to purge any data further than 15m away from each scanner location.This created a nice even intensity value across the fully registered point cloud.
Working from the point cloud and the 360 degree planar scanner images, we were also able to confirm that a number of columns that initially looked like concrete, were in fact cladding over steel.
Without all the detailed data from the laser scan, a return visit to site would have been required to confirm this.
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