3-D Laser Scanning

3-D Laser Scanners are a new tool available for accident reconstruction which are extremely useful in the right circumstances. They work on the same principle as a total station surveying instrument in that they combine a laser distance measurement with accurate angle measurements to give the 3-D position of a measured point. However, total stations can only measure one point at a time whereas 3-D laser scanners measure literally millions of points in a single use. The resulting “point cloud” gives precise 3-D measurements for all of the objects around the scanner, and the colours of the dots even match the colour of the actual object. When looking at the point cloud in the software, it feels like you are there. The pictures on this page are only snap shots of point clouds which we have captured. They are very detailed but, because of limitations of displaying the data over the internet, they don’t do the actual point clouds justice.

3-D laser scanners give accident scenes incredible realism. They offer other very real benefits such as:

  • Being able to map every crack and gouge in the roadway. This is very useful when trying to match the positions of vehicles documented in police photographs.
  • They can cost effectively gather enough data to map fine details of road shape such variations in the amount of banking in a corner, rutting within the lanes, depth of rumble strips, etc.
  • Documenting all of the nuances in the crush depth and even contact scuff marks of the vehicle’s damage.
  • Calculating the volume of crush.
  • Taking measurements at night (because they can be taken in complete darkness).
  • Taking measurements of busy and dangerous roads, because there is no need to be on the road surface and vehicles driving through the scene do not interfere with the measurements.
  • Measuring complex visibility obstructions like trees, embankments, rock slides, etc.
  • Measuring structures that cannot be touched (if for instance, they are too far away or too sensitive)

3-D laser scanners can provide invaluable data when the case warrants it.

Contact us at the link below if you have a case where you think it may be of use.

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