It was not much time i posted about gigapixel images, and a little googling about made me aware about Photosynth Technology by Microsoft which may change the way we browse the way we look digital photos in computer.
Have a look at this video first :-
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.
If you ask microsoft about how they do it , this is what will be the answer :-
Each dot represents an extracted feature
Bunch of digital photos are taken no matter they are of different resolution , taken by different cameras, shooting conditions etc and 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.
Zoooooooooooooming to that extent !!! How ???
Photosynth incorporates Seadragon’s amazingly smooth digital rendering and zoom capabilities.
Microsoft acquired Seadragon in February 2006, this technology features:
- The fastest, smoothest image zooming you’ve seen — Whether it’s 1 megapixel or 1 gigapixel, Seadragon can open any image in a flash, and zoom and pan with buttery smoothness. Images “come into focus” continuously as data comes across the network, and the speed of this focusing is determined only by your screen size and bandwidth, not the size of your image.
- Big collections? No problem — Seadragon can browse collections of many thousands of full resolution images just as smoothly as a single image. Photosynth collections typically have hundreds of photos, but the same performance characteristics apply to collections of 5,000 images and beyond.
Do visit live labs for other projects.
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