> Why can't the brain develop a reverse blur function? We can do this with algorithms
Adaptive optics requires more than just algorithms -- the algorithms' output are fed into a rapidly moving reflective surface to de-blur the incoming light [1] -- so this is a bad analogy. You might be thinking of some of the deconvolution algorithms [2] that the Hubble Space Telescope used before its "eyeglasses" were installed in 1993 to improve its flawed images.
[1] "Adaptive optics works by measuring the distortions in a wavefront and compensating for them with a device that corrects those errors such as a deformable mirror or a liquid crystal array." https://en.wikipedia.org/wiki/Adaptive_optics
A huge fraction of our brain is devoted to vision. One of the neglected features of our visual system is that the raw image falling on the retina is severely blurred: while most people can see with a resolution of about 1 arcminute (one sixtieth of a degree) under any daylight conditions, bright or dim, the image on our retina is blurred through a point spread function of width as large as 5 arcminutes (Wald and Grison, 1947; Howarth and Bradley , 1986). It is amazing that we are able to resolve pixels that are twenty-five times smaller in area than the blob produced on our retina by any point source. Isaac Newton was aware of this conundrum. It's hard to make a lens that does not have chromatic aberration, and our cornea and lens, like a lens made of ordinary glass, refract blue light more strongly than red. Typically our eyes focus correctly for the middle of the visible spectrum (green), so if..."
I recommend the read for those interested. There's even an experiment you can do yourself to experience your own eyes limitations!
Adaptive optics requires more than just algorithms -- the algorithms' output are fed into a rapidly moving reflective surface to de-blur the incoming light [1] -- so this is a bad analogy. You might be thinking of some of the deconvolution algorithms [2] that the Hubble Space Telescope used before its "eyeglasses" were installed in 1993 to improve its flawed images.
[1] "Adaptive optics works by measuring the distortions in a wavefront and compensating for them with a device that corrects those errors such as a deformable mirror or a liquid crystal array." https://en.wikipedia.org/wiki/Adaptive_optics
[2] "The error was well characterized and stable, enabling astronomers to optimize the results obtained using sophisticated image processing techniques such as deconvolution." https://en.wikipedia.org/wiki/Hubble_Space_Telescope#Flawed_...