Photosynth

Microsoft has announced that Photosynth, its stunning three-dimensional photo display technology, has moved beyond the demonstration stage and is now available for photographers to process and upload their own Photosynths. The free service works only on Windows XP and Vista, both for preparing and viewing Photosynths, though Mac compatibility is promised in the future.

Photosynth is a potent mixture of two independent breakthroughs: the ability to reconstruct the scene or object from a bunch of flat photographs, and the technology to bring that experience to virtually anyone over the Internet.

Using techniques from the field of computer vision, Photosynth examines images for similarities to each other and uses that information to estimate the shape of the subject and the vantage point each photo was taken from. With this information, we recreate the space and use it as a canvas to display and navigate through the photos. Photosynth was inspired by the breakthrough research on Photo Tourism from the University of Washington and Microsoft Research. This work pioneered the use of photogrammetry to power a cinematic and immersive experience

Providing that experience requires viewing a LOT of data though—much more than you generally get at any one time by surfing someone’s photo album on the web. That’s where our Seadragon™ technology comes in: delivering just the pixels you need, exactly when you need them. It allows you to browse through dozens of 5, 10, or 100(!) megapixel photos effortlessly, without fiddling with a bunch of thumbnails and waiting around for everything to load.
More information on the history of Photosynth is available here.