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For those who don't know, a company (Lytro) just released a camera that allows for changes in focus *after* the image was acquired. Now that's it's been released as an actual product, I'm intensely curious to understand how it works.
Their website has a cutaway image, and the 'lightfield sensor' looks (or is described very similarly) as a Shack-Hartmann wavefront sensor.
http://en.wikipedia.org/wiki/Shack–Hartmann_wavefront_sensor
http://www.mpia.de/AO/INSTRUMENTS/FPRAKT/HistoryOfShackHartmann.pdf
Oh- the CEO's dissertation is posted on their site... whoa. This is pretty cool.
http://eces.colorado.edu/~pavani/Plenoptic.pdf
Their website has a cutaway image, and the 'lightfield sensor' looks (or is described very similarly) as a Shack-Hartmann wavefront sensor.
http://en.wikipedia.org/wiki/Shack–Hartmann_wavefront_sensor
http://www.mpia.de/AO/INSTRUMENTS/FPRAKT/HistoryOfShackHartmann.pdf
Oh- the CEO's dissertation is posted on their site... whoa. This is pretty cool.
http://eces.colorado.edu/~pavani/Plenoptic.pdf
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