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This is amazing to see. We should use this for image optimization. When we compress channels, we should compress the blue channel to like 30% while keeping others at fairly large 80% and it might appear better than a 60% compressed image.
I’ve always found blue LED or cold cathode signs absolutely illegible at night - just an amorphous blur. I always thought it was just me.
Snell's work on optics would later be overshadowed by the GNU alternative, Fresnel.
This is amazing to see. We should use this for image optimization. When we compress channels, we should compress the blue channel to like 30% while keeping others at fairly large 80% and it might appear better than a 60% compressed image.
If we needed good resolution everywhere, we might have had eyes optimizing for different colors, four eyes, etc.
Also, it isn’t as simple as this article describes. The human eye can vary its focal distance (https://en.wikipedia.org/wiki/Accommodation_(eye)) over a larger range than the effect of color aberration, so the eye _could_ optimize for having optimal focus for blue light or vary that over time.
(https://www.osapublishing.org/josa/abstract.cfm?uri=josa-68-... indicates humans can learn to do that in the lab)
While this is a description of the human brain and human eye it's interesting to me that it is a very accurate description of the progression of camera technology in the last few years as we shift from the supremacy of Big Glass to the amazing results from computational photography being applied to cell-phone sized lenses
After all, chromatic aberration is blurring of only a very, very small amount.
The demonstrated seemingly negligible perceptual effect of blurring blue to a huge degree in a multicolor image doesn't seem to have anything to do with that, but rather the fact that we perceive primary blue as a much darker color than primary red or green, and we perceive differences in lighter colors much more easily.
If the author were correct that we have big problems focusing on blue, then we'd see that blue text against a black background would be massively blurry -- but it's simply not. It's comparatively low-contrast (because blue is a dark color), but it's nearly indistinguishably as sharp as red and green.