New Software Can Create 3-D Models Of Crime Scenes


Forensic experts who reconstruct crime scenes find that creating hand-drawn sketches and taking photographs can take days and disturb the scene, says the New York Times. Computer-aided design packages that require investigators in the field to enter data can be cumbersome, and results can be difficult for jurors to understand.

A Canadian company is demonstrating prototype software that can stitch together a few seconds of video from a hand-held stereo camera into a detailed 3-D model of a room. Police or court workers can zoom around the model to view it from different perspectives, or click to see sizes, relative distances, areas, and angles. “It gives you a third dimension,” said Detective Inspector Jeff Wilkinson of the Ontario Provincial Police, who is assessing the prototype for MacDonald, Dettwiler & Associates. “You can actually begin to develop your investigative theories about how something transpired without entering the scene.” The software is based on a new technique, local invariant features, for comparing computer images.


Comments are closed.


You have Free articles left this month.

Want access to all our reporting? Subscribe for unlimited access or login.