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3D Laserscanning is a secure technique to accurately capture 3D "as-built" data. The technique is comparable with digital photography but with the addition of depth information. A laserscanner generally captures the full 360 degrees. Since DelftTech introduced the laserscanner in The Netherlands, the technology itself has taken great steps forward. Laserscanning started off as an expensive and time consuming process. In comparison to the more conservative survey approaches laserscanning is now competitive and efficient. The density, accuracy and completeness of the captured data are the major advantages of 3D laserscanning. Detailed 3D models can be generated from laserscans. The ability to scan the desired area from a distance and without interaction (contact free measurements) enables important processes to continue without shutting down the facility. Shut downs can also be minimized because parts can be prefabricated very precisely.

DelftTech's newest Z+F Imager 5006 laserscanner is a phase-based laserscanner. This means the scanner measures an object twice using a pulsed laserbeam. The difference in wavelength, after reflection, between the two laserbeams, is used to calculate the distance of the measured point. The scanner has a range from 1 to 79 meters and can deliver a high accuracy, high resolution scan with a 360º x 270º field view. If you need a scanner with a higher range, we can also deliver this by using the Z+F Imager 5010 (up to 187 m).

The accuracy of the generated pointcloud depends on the distance and reflectivity of the measured surface, according to the product specification sheet for the Z+F Imager 5006 and Z+F Imager 5003

After scanning the result is a series of scans from different positions. These scans need to be aligned to a single coordinate system to be able to use the point cloud data. The accuracy of the alignment is shown in a diagnostics output file. By aligning the scans from all the different positions a complete point cloud model is made.