New video "perfection tool" to locate terrorists and identify suspects in crime scenes
1 Jul
2009, 1504 Hrs
Washington, July 1 A team of scientists has developed a new video "perfection tool" to help investigators enhance raw video images to locate terrorists and identify suspects in crime scenes.
Professor Leonid Yaroslavsky of Israel's Tel Aviv University (TAU) and his colleagues have developed the new technology.
Commissioned by a defense-related company to improve what the naked eye cannot see, the tool can be used with live video or with recordings, in color or black-and-white.
"This enhancement of resolution can be a critical factor in locating terrorists or identifying criminal suspects," said Yaroslavsky.
The new invention enhances the resolution of raw video images from security cameras, military binoculars, and standard personal-use video cameras, improving the quality at which the images were originally recorded or transmitted.
This can mean the difference between "seeing" trees blowing in the wind and finding a terrorist hiding in those trees.
"Our video perfection tool works to improve visual quality and achieving a higher resolution of the video image," said Yaroslavsky.
"Once a commercial partner is found, the device can be integrated into existing technology within a matter of months," he said.
A major challenge in video analysis is that images of objects become distorted over long distances due to variations in the air that can affect our sight and the "sight" of a camera.
In the language of optical science, this is known as a "turbulent atmosphere."
A critical image of a person or object can become unstable and almost impossible to identify with any amount of accuracy.
The TAU team exploited the fact that most parts of a video scene remain still.
While there are moving objects such as people, animals or vehicles, a major part of the video ? the background-does not move at all.
Using specially designed algorithms, the team built a software application that lets cameras and video analysis equipment stabilize images, allowing objects that are really moving to be distinguished from chaotic atmospheric changes.
"The technology will increase the odds of identifying suspects in court, but its civilian applications are equally significant," said Professor Yaroslavsky.
Instead of sending large video files over the Internet, smaller and lower-resolution files could be sent, to be enhanced at their destination points. This could save bandwidth and time.
"It's quite a new approach to video perfection," said Yaroslavsky. (ANI)
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