Scientists Develop A Camera That Sees Moving Objects Around A Corner

Posted: Dec 9 2015, 8:49am CST | by , in Technology News


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Camera that sees corners
Photo credit: Gariepy et al/Nature Photonics

Scientists have published a finding in the journal Nature Photonics detailing the potential applicability of using a special camera to detect moving objects behind a wall or around a corner.

The team of researchers from Heriot-Watt University and the University of Edinburgh established that the powers of the camera in question could be used for security surveillance and for detecting cars approaching around a street corner out of direct sight; but the only problem is that it will take some years to fully perfect this camera even though scientists already fully understand its dynamics.

Led by Genevieve Gariepy, the research team devised a special detector that is capable of “seeing” moving objects behind a corner and behind a wall by turning walls and floors into a virtual mirror - according to a report published recently.

The researchers understand that when light from an object is reflected by a mirror, the light enters the eyes by a definite angle; but no clear image would be seen when light scatters randomly from a non-reflective surface. So the investigators used a laser technology to calculate the distance of an object based on the amount of time it takes light to reach it, scatter, and then get back to the detector.

There are however some challenges that must be overcome in the course of the experiment. For instance, the measurement of timing needed to calculate the distance of object and the amount of time it takes light to reach it and bounce back after scattering must be 50 thousand billionths of a second, and only high-tech laser and detector technology could solve this problem.

Another problem is that when light bouncing back from the object reaches the virtual mirror, light from other objects placed within the vicinity of the first object also transmits itself back to the mirror. But the researchers solved this problem with a moving object, rather than a stationary object that will relate with other stationary objects within its vicinity to transmit light.

The good news however is that the researchers continue to perfect their methods to achieve a camera capable of seeing objects placed or moving around a corner or behind a wall, and it is estimated that a breakthrough will be achieved in a number of years from now.

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The Author

<a href="/latest_stories/all/all/52" rel="author">Charles I. Omedo</a>
Charles is covering the latest discoveries in science and health as well as new developments in technology. He is the Chief Editor or Intel-News.




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