4 ms·

Dude. I have... multiple books on my shelf about Deconvolution (though more 1 dimensional than 2 dimensional)... never even heard of this and am tickled pink :

• credit_guy 4y ago
  I find it very unlikely to work. Convolution smooths out functions. If you convolve any function with a Gaussian kernel, you get a C^infinity function (a function that has continuous derivatives of arbitrary order). This anti-blurring effect would attempt to find for a given function f another function g so that g convolved with a Gaussian kernel is f. But if f is discontinuous no such function exists. This is not just academic. Letters on a screen are discontinuous functions. You could say that a certain amount of smoothness is tolerated. Or that all signals are discretized anyway, so the whole concept of continuity is mathematical non-sense. So, what I provided is just heuristics, is not a solid proof. It's still in principle possible to produce such a anti-blurring algorithm, I just find it highly unlikely, I would not invest much time in it.
  • ardourdev 4y ago
    Look up computer generated holography! It is certainly possible to calculate a hologram of a letter which focuses at some different depth than the screen. There are issues which arise from restricting the hologram to a real valued grid, like limited FoV and noise, but these are not impossible problems to solve and existing technology is already quite good in terms of image quality.