What is 3D Laser Scanning?

01st November 2021 | Dan Elliot

In the surveying industry we are increasingly using 3D laser scanning to provide many services and deliverables, but why is this technology so popular and what are the advantages of using it.

How does it work?

3D Laser Scanning works by the scanner sending out laser signals, these laser points hit a surface and bounce back to the scanner. The scanner can then identify the distance to and location of the object it has reflected off. The resulting output is the physical world around the scanner being shown as millions of points of 3D data.


3D Laser scanning is very popular for a variety of reasons:

  • Increased data captured
  • Difficult and dangerous sites can still be measured from a safe distance capturing areas which may not be possible traditionally.
  • With high density scanning the level of detail captured is far superior to anything you could measure traditionally.
  • Minimal disruption
  • Non-contact measurement ensures no damage/disturbance is made to the site.
  • Less time on site meaning disruption to businesses or the public are reduced.

Increase Efficiency – more information can be captured much more quickly and easily than traditional methods.

High Accuracy – still provides survey level accuracy and providing much higher amounts of detail, so quality of service is not compromised and, in many cases, improved.

Intricate and complex features and can be accurately measured and modelled with no disturbance to the building itself. This is especially beneficial for historical buildings.

We use 3D laser scanning to accurately capture, measure and model the existing building and its features. This information is often used for development or redevelopment, planning and applications, construction and design work.

Examples of this technology being used in real world applications can be seen here published by GeoSLAM, a manufacturer of 3D Laser Scanning equipment.

If this is something you would like to know more about or would like to speak the team about this, please get in touch.