3-D 'virtual' models of crime scenes to revolutionise forensic probes

London, Jan 12 (ANI): Forensics experts would no longer have to visit the site of a crime again and again for their probe, thanks to Kiwi researchers who have developed a 3D scanner that can create a 'virtual' model of any given area.

The team led by Robert Valkenburg of Industrial Research in Auckland, New Zealand, has developed a computerised 3D model that can be navigated as if investigators were at the crime scene.

The hand held device consists of a laser scanner combined with a digital camera, which can record a scene with millimetre accuracy.

The scanner creates a 3D model of the scene, onto which images from the camera are superimposed.

With the help of a local GPS system, in which a number of "satellites" placed on tripods around the scene emit laser pulses, the device creates a virtual model of the scene, reports New Scientist magazine.

There are sensors fitted to the scanner that allow the device to calculate its position by triangulation.

According to Valkenburg, at least 20 of such laser beacons are needed. The more beacons, the greater the accuracy.

Valkenburg said that as the device is swiped in front of objects, walls or other surfaces, they automatically appear on screen "like brushstrokes".

The device can also be used to scan heritage sites, historical artefacts and movie and video game props, he added. (ANI)