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Cameras of the future: heart researchers create revolutionary photographic technique
Date:2/14/2010

hotographs or video of a high-speed scene, like football or motor racing, even with a fairly decent digital SLR, will know that it's very difficult to get a sharp image because the movement causes blurring. We have the same problem in science, where we may miss really vital information like very rapid changes in intensity of light from fluorescent molecules that tell us about what is happening inside a cell. Having a massive 10 or 12 megapixel sensor, as many cameras now do, does absolutely nothing to improve this situation.

"Dr Gil Bub from my team then came up with a really great idea to bring together high-resolution still images and high-speed video footage, at the same time and on the same camera chip 'the real motion picture'! The sort of cameras researchers would normally need to get similar high-speed footage can set you back tens of thousands of pounds, but Dr Bub's invention does so at a fraction of this cost. This will be a great tool for us and the rest of the research community and could also be used in a number of other ways that are useful to industry and consumers."

"What's new about this is that the picture and video are captured at the same time on the same sensor" said Dr Bub. "This is done by allowing the camera's pixels to act as if they were part of tens, or even hundreds of individual cameras taking pictures in rapid succession during a single normal exposure. The trick is that the pattern of pixel exposures keeps the high resolution content of the overall image, which can then be used as-is, to form a regular high-res picture, or be decoded into a high-speed movie."

The technique works by dividing all the camera's pixels into groups that are then allowed to take their part of the bigger picture in well-controlled succession, very quickly, and during the time required to take a single 'normal' snapshot. So for example, if you use 16 pixel patterns and sequentially expose each of them for one sixteenth of the time th
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Contact: Tracey Jewitt
press.office@bbsrc.ac.uk
44-017-934-14694
Biotechnology and Biological Sciences Research Council
Source:Eurekalert

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