Microsoft Live Labs: Photosynth

Photosynth is a new technology from Microsoft Live Labs that takes a large collection of photos of a place or an object, analyzes them for similarities, and displays them in a reconstructed three-dimensional space.

With Photosynth you can:

• Walk or fly through a scene to see photos from any angle.
• Seamlessly zoom in or out of a photo whether it's megapixels or gigapixels in size.
• See where pictures were taken in relation to one another.
• Find similar photos to the one you're currently viewing.
• Send a collection - or a particular view of one - to a friend.
  

"We've assembled a few collections for you to play with, and we're working on adding more. In the future you'll be able to "photosynthesize" your own photos, but we aren't there yet.", said Photosynth website.

A Photosynth experience begins with nothing more than a bunch of digital photos. They might all have been taken by one person, or they might be a mixture of images from many different cameras, shooting conditions, dates, times of day, resolutions, and so on.

Each photo is processed by computer vision algorithms to extract hundreds of distinctive features, like the corner of a window frame or a door handle. Photos that share features are then linked together in a web. When the same feature is found in multiple images, its 3D position can be calculated. It's similar to depth perception - what your brain does to perceive the 3D positions of things in your field of view based on their images in both of your eyes. Photosynth's 3D model is just the cloud of points showing where those features are in space.

I encourage you to try the preview page and experience this new digital photography tool.

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Microsoft Live Labs: Photosynth