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The Resolution of the Human Eye Tested Is 10MP

13 点作者 jhonovich超过 8 年前

3 条评论

Someone超过 8 年前
<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Cone_cell" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Cone_cell</a> claims (with caveats) around 100M light sensitive cells (90M rods and 5M cones), but that doesn&#x27;t mean 100 megapixels for various reasons.<p>Some differences between the human eye and a typical digital camera:<p>- resolution varies hugely over the retina<p>- color sensitivity varies hugely over the retina (you can&#x27;t see color outside of the fovea)<p>- the optic nerve has only about 1M ganglion cells (<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Optic_nerve#Structure" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Optic_nerve#Structure</a>), so there is significant &#x27;compression&#x27; very early on (&quot;In the fovea, which has high acuity, these ganglion cells connect to as few as 5 photoreceptor cells; in other areas of retina, they connect to many thousand photoreceptors.&quot;)<p>- bandwidth of the optic nerve is estimated at 10 mega<i>bit</i> per second (<a href="https:&#x2F;&#x2F;www.eurekalert.org&#x2F;pub_releases&#x2F;2006-07&#x2F;uops-prc072606.php" rel="nofollow">https:&#x2F;&#x2F;www.eurekalert.org&#x2F;pub_releases&#x2F;2006-07&#x2F;uops-prc0726...</a>) (1)<p>- that is very soon further compressed; I can&#x27;t find decent estimates for what can be consciously seen, but am sure it is less than 1kB&#x2F;second (corollary: photographic memory doesn&#x27;t exist)<p>=&gt; &quot;The eye is not a camera&quot; would be a better answer.<p>(1) as with almost all of these estimates, a factor of ten is nothing.
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jsjohnst超过 8 年前
Curious why they used IP cameras, my guess is it had less to do with science and more to do with who they are.<p>Reason I point this out, notice how blocky the images in general are, especially with lower light? Take any prosumer&#x2F;pro digital camera of the same resolution and you&#x27;ll get significantly better results, especially at 1 lux.<p>To reword the title to be a lot more accurate, &quot;the resolving power of the human eye is roughly equivalent to a 10MP IP camera in a well lit room&quot;. Definitely wordier and less click baity, but accurate to the &quot;analysis&quot; they did.
ralusek超过 8 年前
I wonder what the other experiments were that were performed that came to such wildly different figures.