Using the latest 3D scanning hardware (see about us page), 3D laser scanners (sometimes referred to as Terrestrial LiDAR) acquire point clouds comprising millions of 3-dimensional data points from everything within its range of data capture (typically up 0-350m). Our scanners also have onboard cameras so that the points can be coloured to provide realistic visualisations of the built environment.
Because laser scanning is an optical survey technique, it is only possible to capture 3D data from targets in the line of sight. Thus “shadow zones” behind walls, vehicles and other obstructions need to be filled in by placing the scanning instrument in another position. A 360 degree scan from one position can typically take 5-11 minutes depending on the required level of detail. Typical accuracies of 3D laser scan surveys are around ±2mm.