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Terrestrial Laser Scanning (TLS) training

The 21st October Dr Sean Wilkinson, Dr Diana Contreras and Mr James Goodyear were trained by Mr Kristopher Atkinson from FARO technologies in the use of TLS. This tool allows undertaking a more detailed structural survey capturing the entire geometry of buildings with the level of detail required to identify and measure cracks, settlement, displacement, missing mosaic tiles and another type of damages. This data collection method uses a scanner that reflects a laser off of a rotating mirror in order to acquire a sphere of measurements from one central point of view. TLS uses a time of flight measurement technique that calculates distance based on the time it takes for the laser to return from a surface or a phase shift method that compares the emitted and received phases of the laser. TLS provides accurate 3D geometry with a millimetre and range, reducing the effort involved in measuring and post-processing. The laser scanner integrates GPS and correlates individual scans in post-processing, making it suitable for surveying based applications.

When the laser is connected to FARO SCENE on a mobile computer, the project scan data becomes automatically fully registered. This on-site registration makes the in-office registration obsolete and the project map generates an all-encompassing overview from the site scanned. Selected areas can now be rescanned at a higher resolution for more accurate target detection. Rescanning small areas of interest provides the highest possible detail while significantly reducing the data volume and the number of necessary scans. It is possible to perform scanning even in bright sunlight. TLS is the data collection method suitable for historic structures affected by earthquakes or host frescoes, mosaics, sculptures, ornate facades that needs a precise restoration in order to keep their condition of world heritage (WH) in case they had it before, and precisely estimate the cost and time needs for their recovery.


Last modified: Tue, 05 Nov 2019 16:47:49 GMT