The kind of shaky handheld footage that is a hallmark of home movies has become popular with Hollywood directors in recent years. But new software means that handheld cameras need no longer give wobbly results.Pretty cool stuff, could improve a lot of shaky cam YouTube videos.
Computer scientists at the University of Wisconsin, Madison, and software giant Adobe have developed a technique that mixes 3D reconstruction with optical illusion to turn distinctive wobble of handheld camera footage into the smooth glide of a Hollywood tracking shot.
Warped thinking
The process starts using off-the-shelf software called Voodoo Camera Tracker that can reconstruct a camera's path through 3D space from a video sequence.
Using that as a reference, the software then tries to distort each frame to create the way things would have looked were the camera to have been on that perfect, smooth path. Rather like a fun house mirror, different regions of each frame are warped by different amounts.
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Tuesday, July 14, 2009
New technique to make shaky cam videos stable
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