Hugh Pickens writes "Researchers at MIT have developed a laser camera that can
'see' around corners and take pictures of a scene not in its direct line of
sight. The camera system fires extremely short bursts of light that can reflect
off one object, such as the open door of a room, and then off a second object
inside the room before reflecting back to the first object and being captured by
the camera, after which algorithms can use the information to reconstruct the
hidden scene exploiting the fact that it is possible to capture light at
extremely short time scales, about one quadrillionth of a second. By
continuously gathering light and computing the time and distance that each pixel
has traveled, the camera creates a '3D time-image' of the scene it can't
directly see. 'It's like having X-ray vision without the X-rays,' says Professor
Ramesh Raskar. 'We're going around the problem rather than going through it.'"
http://science.slashdot.org/story/10/11 ... nd-Corners