dreamdancer 0 #1 February 25, 2010 interesting... QuotePhysiologists who hacked a digital camera for their lab work are now seeing the homebrew modification turned into a technology that could squeeze high-speed video out of consumer cameras. Gil Bub and Peter Kohl's team at the University of Oxford wanted to record rat heart cells in action, so they trained two cameras on tissue samples in their lab. A high-speed movie camera filmed the cell's pulsing activity , while a normal stills camera captured detailed images. But aligning the two sets of images proved fiddly and frustrating. So the team took an off-the-shelf video camera to pieces and rebuilt it to perform both roles, simultaneously recording high-speed video and high-resolution stills. They achieved the trick using a component most common in another consumer gadget – a home cinema projector. These projectors contain a digital chip studded with tiny, moving mirrors, each of which controls the brightness of a pixel in the projected image. The Oxford team fixed one of these chips between their camera's lens and its image sensor. They used the chip's mirrors as a selective shutter, chopping up every frame of video captured by the camera into 16 lower-resolution frames. In this way, they were able to squeeze 400 frames per second out of the 25 frames per second the camera was designed to record. http://www.newscientist.com/article/dn18522-offtheshelf-camera-hacked-to-grab-highspeed-video.htmlstay away from moving propellers - they bite blue skies from thai sky adventures good solid response-provoking keyboarding Quote Share this post Link to post Share on other sites
