I think it would be possible with a ton of mathematics and a major headache, and a perhaps some CPU-Power. Of course it wouldn't be perfect, but the resultant could be perfected as best as possible by hand. By taking a photo of say like a building at an angle, one of Microsoft's WIP programs (or other companies/scientists/whatever - I saw this technology in developement on Slashdot) it can transform it into a 3D model. Again, of course it wouldn't be perfect - but it would be a better start than nothing. It would probably take a lot of time to make a calculator for a project like this, as it would have to take all those split-second still angle shots (top, bottom, front, back, left/right) and try to put it together like a puzzle...or maybe if you put it a little more CPU effort it could also use the animation as a whole to make the calculations.