A team of University of Washington researchers have announced exciting breakthroughs in online 'Photo Tourism' this week.
The same team is now pushing the boundaries of what can be done by intuitively processing the masses of digital images online.
3D online worlds
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The technology is considerably more developed than Photosynth, manipulating photos to provide viewers with a remarkable 3D tour experience.
If you want to know (lots) more you can read the team's conference paper.