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> EnChroma ... corrective glasses ... don’t actually fix colorblindness. They correct for it... I would be really, really interested to try the reverse version

> EnChroma ... corrective glasses ... don’t actually fix colorblindness. They correct for it... I would be really, really interested to try the reverse version of those to try and see like a colorblind person. I feel like a few hours of doing that could be very insightful. (Especially since I'm an EE now and we color-code all the things. This was not necessarily a great choice.)

thaumaturgy 4y ago
Try an app called "CVSimulator" (available for Android and iOS). My friend uses it to see what I see (sort of), and it's accurate-ish.
- exmadscientist 4y ago
  Part of my problem is that I'm specifically interested in things (indication LED color) that are out of gamut for sRGB. If the original thing doesn't even display properly, I can't exactly hold out hope that the simulated thing will be anything close to the true experience, can I?
fwlr 4y ago
There isn’t really a reverse EnChroma. The mechanism of color perception is you have three different chemicals in your eye and each of those chemicals reacts most strongly with different wavelengths of light. This is a chart of those three response curves: https://upload.wikimedia.org/wikipedia/commons/thumb/0/04/Cone-fundamentals-with-srgb-spectrum.svg/1280px-Cone-fundamentals-with-srgb-spectrum.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/0/04/Co... The way you perceive “green” is that your brain goes “ah, S is at 10% activation, M is at 80% activation, L is at 50% activation. That’s green!” Colorblindness is when you take one of those curves and shift them closer to the other (shifting M towards L is the most common, shifting L towards M is the next most common). The bigger overlap in curves is what makes those colors not contrast. EnChroma glasses work by blocking a certain wavelength of light that’s right where the overlap is strongest. Maybe you could get the effect of “reverse EnChroma“ glasses by having light at the overlap added in to whatever you’re seeing?

thaumaturgy 4y ago

Try an app called "CVSimulator" (available for Android and iOS). My friend uses it to see what I see (sort of), and it's accurate-ish.

exmadscientist 4y ago
Part of my problem is that I'm specifically interested in things (indication LED color) that are out of gamut for sRGB. If the original thing doesn't even display properly, I can't exactly hold out hope that the simulated thing will be anything close to the true experience, can I?

fwlr 4y ago

There isn’t really a reverse EnChroma. The mechanism of color perception is you have three different chemicals in your eye and each of those chemicals reacts most strongly with different wavelengths of light. This is a chart of those three response curves: https://upload.wikimedia.org/wikipedia/commons/thumb/0/04/Cone-fundamentals-with-srgb-spectrum.svg/1280px-Cone-fundamentals-with-srgb-spectrum.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/0/04/Co... The way you perceive “green” is that your brain goes “ah, S is at 10% activation, M is at 80% activation, L is at 50% activation. That’s green!” Colorblindness is when you take one of those curves and shift them closer to the other (shifting M towards L is the most common, shifting L towards M is the next most common). The bigger overlap in curves is what makes those colors not contrast. EnChroma glasses work by blocking a certain wavelength of light that’s right where the overlap is strongest. Maybe you could get the effect of “reverse EnChroma“ glasses by having light at the overlap added in to whatever you’re seeing?