If anyone is attempting to build something like this, I'll just note that automating this process (spatio-temporally registering photographs and reconstructing

If anyone is attempting to build something like this, I'll just note that automating this process (spatio-temporally registering photographs and reconstructing 3D models of cities as they change over time) was essentially the topic of my PhD thesis, but on historical time scales (1860s-2000s) rather than minute-to-minute. Slides from my CVPR 2010 presentation here: http://www.cc.gatech.edu/~phlosoft/files/schindler10cvpr_slides.pdf http://www.cc.gatech.edu/~phlosoft/files/schindler10cvpr_sli... Videos: http://www.cc.gatech.edu/~phlosoft/ http://www.cc.gatech.edu/~phlosoft/ The best way to get a system running quickly would be to use Noah Snavely's Bundler project for the 3D reconstruction: http://phototour.cs.washington.edu/bundler/ http://phototour.cs.washington.edu/bundler/ and, at first, trust most EXIF tags for time.