How about an augmented reality viewer that shows exactly where every known photo has been taken (say, showing the image planes floating in their space)? or a "p

How about an augmented reality viewer that shows exactly where every known photo has been taken (say, showing the image planes floating in their space)? or a "photosynth" virtual camera that deduces, from other pictures taken nearby, what a photo would likely look like if taken from that spot (opposite of camera restricta, have camera deducia)?