Since our inception, Spatial Dimensions has been embracing laser scanning, recognising the benefits the technology can offer to our clients.
What is a laser scanner?
A laser scanner is a measuring device that records geometrical information about any object or surface within its field of view. The collected data is a dimensionally correct 3D representation of the scanner’s immediate environment.
Laser scanners work by rapidly rotating a laser beam and recording up to a million angular and distance measurements every second. They rely on a clear line of sight to the subject so, for most situations, a single scan will not be sufficient. Multiple scans from various locations are usually required to obtain enough information to provide a complete ‘picture’ of a site.
Laser scan surveys
The data captured by a laser scanner is known as a point cloud and, depending on the site, can contain billions of 3D points. The point cloud is a very rich data set and can be used to create drawings and construct 3D models for a wide variety of purposes. We also have the capability to apply realistic colour to the point cloud from our panoramic imaging cameras, further enriching the data set and producing a highly realistic visualisation of the site.
Collecting millions of points in a matter of minutes has proven to be pretty handy to surveyors, as well as being highly beneficial to our clients. Saving time on site and returning to the office with a detailed point cloud reduces the likelihood of costly site revisits and speeds up the turnaround of detailed surveys. Clever stuff.
Benefits of laser scan surveys
- Rapid site data collection – up to 1,000,000 points per second
- Accurate information – positional accuracy down to a few millimetres
- Completeness of data – a high-definition dimensional record of a site
- Reduce re-visits to restricted locations
- Add value by capturing additional surrounding information
- Permanent ‘point-in-time’ archive record for heritage purposes and reinstatement
- Collaboration and virtual site visits using TruView™