Wireless Sensor Images in 3D
This 3D sensor helps compose a 3D model, simply by projecting a stripe pattern onto the subject, using the couple of “eyes” to capture slightly distinct angles of the image based on the deducted geometry.
“It consists of two cameras with a projector in the center,” said IOF Optical Systems department head Gunther Notni, PhD. “The two cameras provide a three-dimensional view, rather like two eyes. The projector casts a pattern of stripes on the objects. The geometry of the measured object can be deduced from the deformation of the stripes.”
Fans of crime shows such as “CSI” know that forensic experts often make plaster casts of tire tracks left in soft surfaces for later comparison with the tracks made by suspects’ vehicles. But the Fraunhofer researchers said their method offers a much faster, easier way of creating an image: The battery-powered sensor can be aimed at the tracks in question, its button pressed, and a few seconds later police officers can see a 3-D image of the track on their laptop computer, sent wirelessly by the sensor.
The device also has medical applications, such as providing a 3-D scan of a patient’s face prior to plastic surgery or other procedures.
It was developed at the Fraunhofer Institute for Applied Optics and Precision Engineering (Fraunhofer IOF) in Jena.The researchers will showcase the sensor at the Control trade fair in Stuttgart, Germany, April 21-25 (Hall 1, Stand 1520).
Via Tech Fresh
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