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A Co-worker was telling me this morning about a friend of his that is Red/Green colorblind to an extend where he is not allowed to drive.
I started to think about ways that the Red/Green spectrum could be mapped into something that could be detected by someone colorblind, preferably in a low-tech,
non failure-prone way.
The idea that I came up with was a pair of glasses with one lens red tinted and one lens green tinted (like 3D glasses, only Red/Green instead of Red/Blue)
With a little practice, the colorblind person could learn "left eye - go, right eye - stop" as instinctively as the rest of us know "green - go, red - stop"
Baked?
http://www.dyslexia...our_deficiency.html
"ChromaGen™ is a unique system of coloured lenses of a specific density and hue that are worn as either contact lenses or spectacles." - Hard to tell if this is similar to this idea or not... [scad mientist, Dec 08 2004]
[link]
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i have no idea if this would work, but + for the thought if nout else. |
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Is it really that hard to learn "bottom light - go, top light - stop"? |
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At night, it's often difficult to see the actual housing until you're up close, making it just a light. In this case, it's impossible to tell whether it's bottom/top or left/right. |
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This is not remapping so much as selective obfuscation. I don't know how well this would work (I get headaches when wearing R/B 3-d glasses) but [+] for the concept. |
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You might as well allow blue light in to both eyes, so you'd have one violet lense (red+blue) and one cyan lense (green + blue). |
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Even better might be to have the glasses only slightly attenuate one color in each eye, so each eye can still see everything, but green colors would be dimmed in one eye and red colors dimmed in the other. The lense colors would still be violet and cyan, but not as dark. I imagine that at first when learning to use the glasses, the user would close one eye, then the other to determine what a color is. But the brain is really adaptable. I wouldn't be surprised at all if the user could soon just look at a color and know that it was red or green. Once that happened, they'd probably just wear the glasses all the time. Unfortunately I suspect these would look funny having two different color lenses. |
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Of course this sounds like such a good idea that surely it's baked already. One google search later... Wearing one red contact lense in the non-dominant eye is the cheap solution. There's another that might be very similar to this idea (see llink), but they don't give enough detail to say for sure... |
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So I'll say maybe baked, but not widely known to exist considering that neither of the two color blind people I know have them. |
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Bifocals with red top green bottom would be snazzier and more symmetrical. I like! |
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the red light is supposed to be the one on the side your steering wheel is on [i.e. left if you drive on the right] always for horizontal ones |
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9 years later I thought of this again. This time,
however, there is just a small colored filter corner
to the glasses. On tilting the head and looking
thru the color filter, things that turn dark are not
that color. Things that are unchanged are that
color For red green color blindness one could just
have a small red square in each lens. |
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Thinking further, the same principle could be used
for intractable optimists but with a rose lens.
Things that were not actually as good as they
seemed would turn dark but things that really
were so great would stay the same. |
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Not a lot of stop lights at 30,000 feet, though. |
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However, would it not be better to make the red
lights square, and the green ones round? |
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It might be if you could make them ... hmm ... okay I've no clue: is colourblindness something missing from the spectrum or something shifted to another colour ? The former then shapes are useless since you can't see it shining anyways. |
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//is colourblindness something missing from the
spectrum or something shifted to another colour ?
// There are lots of different types of colour
blindness, caused either by one (or two, or all
three) colour receptors in the eye being non-
functional; or by one of them having a different
spectral response from normal. |
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The commonest type of colour blindness, by far,
is caused by an alteration in the green
photoreceptors, so that they respond less well to
green (and better to red) than normal green
receptors. |
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In the normal eye, the response of the red and
the green receptors is quite broad - ie, the green
receptors respond fairly well to red, and vice
versa, in two overlapping bell-curves. Colours
between red and green are distinguished by the
relative strengths of the responses from the two
cone types. |
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In someone with the common type of red/green
colour blindness, the peak of response from the
"green" receptors is shifted toward that of the
"red" receptors. Therefore, anything between red
and green excites both sets of receptors more or
less equally, making it difficult to distinguish
colours on the red-green axis. However, both
receptors respond well enough to green light (as
well as to red) that greens don't appear dark. |
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Thus, a person with r/g colour blindness would be
able to see red and green lights fine - they just
couldn't tell which was which. So, different
shapes could be used on traffic lights. |
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Forgive me, but I think R/G colour blind drivers know the top light is red and the bottom one is green. They can still see which light is on. |
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I wonder if a band filter could be used... filtering out
the colours in the overlapping bell curves of red and
green....so that the wearer can see bluey green and
dull red but nothing in-between. This would give the
same filter for left and right eyes. |
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//Forgive me, but// See [Freefall]'s earlier anno - at
night, you may not see the whole light, just the
illuminated part, making it difficult to tell whether
the lit part is at the top or the bottom. |
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//Intersections are lit up pretty brightly ...// Not
all traffic lights are at urban intersections. At least
not in the UK. |
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