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Light-in-Flight Imaging
Transient imaging is a recent imaging modality in which short pulses of light are observed "in flight" as they propagate through a scene. Transient images are useful to help understand light propagation in complex environments and to analyze light transport for research and many practical applications. Two such examples are the reconstruction of occluded geometry, i.e. "looking around a corner", or measuring surface reflectance.
Unfortunately, advances in research and practical applications have so far been hindered by the high cost of the required instrumentation, as well as the fragility and difficulty to operate and calibrate devices such as femtosecond lasers and streak cameras.
http://vimeo.com/64112013
http://www.cs.ubc.ca/labs/imager/tr/2013/TransientPMD
Unfortunately, advances in research and practical applications have so far been hindered by the high cost of the required instrumentation, as well as the fragility and difficulty to operate and calibrate devices such as femtosecond lasers and streak cameras.
http://vimeo.com/64112013
http://www.cs.ubc.ca/labs/imager/tr/2013/TransientPMD
This is really cool. Visualize a single wave of photons in flight!
It's not quite that, instead it's an animation created from multiple waves of light, but the breakthrough is they did it for a much lower cost than the original MIT method here:
http://web.mit.edu/press/2011/trillion-fps-camera.html