3 ms·
In both cases you'd need to know some properties of the distribution to get a random bitstream. Which pixel would you be looking at? Below what threshold would
by altrego99 9y ago
In both cases you'd need to know some properties of the distribution to get a random bitstream.
Which pixel would you be looking at?
Below what threshold would you call it a 0 rather than 1?
How long till you can confidently say next reading will be uncorrelated?
I don't know how the astronomical imaging solved these (and TBH cosmic ray scanning seems a bit overkill to me too).
- greglindahl 9y agoUSB webcams get hit by cosmic rays, too. This paper is interesting because it's not just looking at the low bits of a normal image, but rather at at exceptional events. It's a different sort of random.
- eru 9y agoActually, you can get pretty far with randomness extractors with scant assumptions on the properties of the bitstream.