3 ms·
I'll take it one step further. The arrangement of rods and cones in the eye are optimized precisely around the task of capturing the salient details of a projec
by IIAOPSW 5y ago
I'll take it one step further. The arrangement of rods and cones in the eye are optimized precisely around the task of capturing the salient details of a projected image. The distribution has an exponential form radiating from the center precisely because the brain is working in log polar coordinates (or similar). CCD arrays are stuck with the naive 2d grid arrangement.
https://www.math.utah.edu/~bresslof/publications/01-3.pdf https://www.math.utah.edu/~bresslof/publications/01-3.pdf
- eru 5y agoInteresting! Though: I can believe that our arrangement is a local optimum, sure. (Local in some genetic sense.) That still doesn't make me believe that are anywhere close to a global optimum. Behold the octopus: > Do these design problems [of optical blind spots] exist because it is impossible to construct an eye that is wired properly, so that the light-sensitive cells face the incoming image? Not at all. Many organisms have eyes in which the neural wiring is neatly tucked away behind the photoreceptor layer. The squid and the octopus, for example, have a lens-and-retina eye quite similar to our own, but their eyes are wired right-side out, with no light-scattering nerve cells or blood vessels in front of the photoreceptors, and no blind spot. From https://www.pbs.org/wgbh/evolution/change/grand/page05.html https://www.pbs.org/wgbh/evolution/change/grand/page05.html