2. Photosynth is an entirely new visual medium developed by Microsoft Live Labs. Photosynth is an entirely new visual medium developed by Microsoft Live Labs.

3. It analyzes a set of photos of a place to discover similarities between the photos and uses that data to estimate where a photo was taken and build a model of the subject. It analyzes a set of photos of a place to discover similarities between the photos and uses that data to estimate where a photo was taken and build a model of the subject.

4. It then re-creates the environment and uses that as a canvas on which to display the photos. It then re-creates the environment and uses that as a canvas on which to display the photos.

5. 2006: Microsoft acquired small, Seattle-area startup Seadragon 2006: Microsoft acquired small, Seattle-area startup Seadragon

6. Seadragon’s was capable of delivering a smooth experience browsing massive quantities of visual information over the Internet Seadragon’s was capable of delivering a smooth experience browsing massive quantities of visual information over the Internet

7. 2006: Groundbreaking research of Noah Snavely (UW), Steve Seitz (UW), and Richard Szeliski (Microsoft Research), developed a prototype called ‘photo tourism’, which form the basis of the synther in photosynth 2006: Groundbreaking research of Noah Snavely (UW), Steve Seitz (UW), and Richard Szeliski (Microsoft Research), developed a prototype called ‘photo tourism’, which form the basis of the synther in photosynth

9. November 9, 2006 : Microsoft released a free tech preview version November 9, 2006 : Microsoft released a free tech preview version August 6-20, 2007 : Microsoft teamed up with NASA on allowing users to preview its Photosynth technology showing the Space Shuttle Endeavour. August 6-20, 2007 : Microsoft teamed up with NASA on allowing users to preview its Photosynth technology showing the Space Shuttle Endeavour.

10. August 20, 2008, Microsoft officially released Photosynth to the public, allowing users to upload their images and generate their own Photosynth models. August 20, 2008, Microsoft officially released Photosynth to the public, allowing users to upload their images and generate their own Photosynth models.

11. Feature Tracking Feature Tracking 3D Transformation 3D Transformation Geo Registration Geo Registration

13. Algorithm of Choice: Algorithm of Choice: Scale-space Invariant Feature Transform by David G Lowe, (2000) Scale-space Invariant Feature Transform by David G Lowe, (2000) Most stable to affine transformation Most stable to affine transformation Uses Difference of Gaussians to find extrema across scale spaces as interest points Uses Difference of Gaussians to find extrema across scale spaces as interest points

15. Discover correspondence between pictures Discover correspondence between pictures

16. Uses the Direct Linear Transformation Algorithm, Richard Hartley and Andrew Zisserman (2000) Uses the Direct Linear Transformation Algorithm, Richard Hartley and Andrew Zisserman (2000)

19. Aligns the estimated position of the pictures with a GPS map of the location Aligns the estimated position of the pictures with a GPS map of the location

20. Walk or fly through a scene to see photos from any angle Walk or fly through a scene to see photos from any angle Zoom in or out of a photo Zoom in or out of a photo See where pictures were taken in relation to one another See where pictures were taken in relation to one another Smoothly change viewing angle between nearby photos Smoothly change viewing angle between nearby photos Smoothly zoom in and out of high-resolution photos Smoothly zoom in and out of high-resolution photos Find similar photos to the one you're currently viewing Find similar photos to the one you're currently viewing Send pictures Send pictures