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It turns out that the gains from only computing the paths of a subset of the rays are offset by the cost of recovering the compressively sensed data.

I could be wrong, though -- I only did this back-of-the-envelope a few months ago. I never really tried that hard to make it work.

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(I'm assuming this is a reply to my raytracing comment)

This is most likely true. Additionally, raytracing just might produce samples that are too regular for this to work well. I haven't really thought about it :)

Regularity helps, not hinders, but it's surely not going to be real-time. It might be faster than ray tracing every pixel, but that depends on many factors that I don't know/understand.

(I think you meant to reply to a different comment.)

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