Many of us here at photo SE have read about light field photography and related cameras from Lytro and Raytrix.
A few of the advantages it allows are post-capture software focus, scene perspective changing and manipulation, and 3D video.
Are there any reference software implementations or available demo code of lightfield imaging for the above features and the related algorithms? (I read that FFT/IFFT is the tool used in obtaining software-focussed images, but I do not understand the full details of this.)
I've heard rumors that Nvidia Cuda has some thing for it, but I need more details if anyone has them.