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Colour blindness

 Poster: A snowHead
Poster: A snowHead
Hi, I suffer from red green colour blindness and irrespective of light source or conditions I find it really difficult to differentiate between red and black on printed piste map, I have thickened in the piste colour I want with felt tip but that isn’t a solution when I move away from the map I had prepared the previous evening. This isn’t a problem when I stop and concentrate on markers at the lift but the big piste map at lift can be hit and miss. Has anyone found a solution, I don’t think I’m alone in this given the high proportion of people that suffer one way or another from colour blindness.
Thanks
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 Obviously A snowHead isn't a real person
Obviously A snowHead isn't a real person
Ski lessons ? So you won't care what colour the piste markers are.
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 Well, the person's real but it's just a made up name, see?
Well, the person's real but it's just a made up name, see?
Maybe go over the red runs on your piste map with a yellow highlighter to give them a yellow outline?
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Not sure if this will work, whether you see red as black or whatever, but there is an app called Chromatic Vision Simulator'. Download it, then click on the eye symbol, point it to somewhere that's red and black, then choose 'P' or 'D' and unchoose 'C'. What was red will now appear green. If your eyes work differently play about with P, D, and T until you see a difference.
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 Anyway, snowHeads is much more fun if you do.
Anyway, snowHeads is much more fun if you do.
Chromatic Vision Simulator, that’s clever and cool, thanks
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EnChroma lenses?
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 Then you can post your own questions or snow reports...
Then you can post your own questions or snow reports...
Color filters? Like those used for camera lenses.

Say you’re interested in skiing only blues. Hold up the blue filter. All the red and black fade away, only the blue stands out.

Get the color that correspond to the piste marker color. Might need to experiment a little to find the best ones.
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After all it is free Go on u know u want to!
@abc, no, the black will remain black and the red will become brown. Don't forget, by adding a filter you're superimposing a colour on the colours seen, so only the colour that corresponds to the colour of the filter will remain unchanged, the other colours will be themselves + the colour of the filter.
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Im the same, so maybe draw symbols on your map. Red circles black diamonds square blues.

Alternatively you could use an image editor & play around the colours/replace colour tool
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Have someone WITHOUT colour blindness spend 5 mins with a fine black pen, marking 'v's along the direction of travel. One > for blue, >> for red and >>> for black. One set per run might suffice, depending on how long the run is and if it goes over a fold.

I just had misty nostalgia for marking up military quarter mil charts before a LL trip!

Edited to actually state the obvious!


Last edited by Ski the Net with snowHeads on Sat 20-10-18 17:50; edited 1 time in total
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@Charliegolf, how will he know which ones to mark >> and >>> if they both look the same on the map?

Puzzled
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And love to help out and answer questions and of course, read each other's snow reports.
https://pilestone.co.uk/?gclid=CjwKCAjwpKveBRAwEiwAo4Pqm5S9iG5zVwziP8GzpJStpeKkYuvsM4_0hQmQybrDxY4-2A4q9QaaMRoCf40QAvD_BwE
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So if you're just off somewhere snowy come back and post a snow report of your own and we'll all love you very much
marodo2712 wrote:
@Charliegolf, how will he know which ones to mark >> and >>> if they both look the same on the map?

Puzzled


Not rocket science to have a little help before departure/first day of skiing is it?
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 You know it makes sense.
You know it makes sense.
Well, if he relied on some of the rogues on here to do the job for him, he'd end up hurtling down the Kamikazi at terminal velocity!

Toofy Grin
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 Otherwise you'll just go on seeing the one name:
Otherwise you'll just go on seeing the one name:
Some great ideas here but I'm not sure how any marking of the piste map in his pocket helps with trying to take a quick look at the big map at the top of the lift.
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 Poster: A snowHead
Poster: A snowHead
Some great ideas here but I'm not sure how any marking of the piste map in his pocket helps with trying to take a quick look at the big map at the top of the lift.
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 Obviously A snowHead isn't a real person
Obviously A snowHead isn't a real person
Some great ideas here but I'm not sure how any marking of the piste map in his pocket helps with trying to take a quick look at the big map at the top of the lift.
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 Well, the person's real but it's just a made up name, see?
Well, the person's real but it's just a made up name, see?
@enigma, I have the same problem (possibly worse - I struggle with piste markers also). I used Smith googles with chromapop lenses, which I think work on a similar principle to the Envision lenses. They're great in terms of vision and contrast, but don't really help with colours.

If you find something that works, I'd love to hear about it.
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tarrantd wrote:
Some great ideas here but I'm not sure how any marking of the piste map in his pocket helps with trying to take a quick look at the big map at the top of the lift.


If you have a map in your pocket you can interpret, that you know is accurate, why look at one you can't?
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 Anyway, snowHeads is much more fun if you do.
Anyway, snowHeads is much more fun if you do.
marodo2712 wrote:
by adding a filter you're superimposing a colour on the colours seen, .

Actually, no.

Filters don’t “add” color. It only “removes” colors that don’t correspond to the filter’s color.
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rjs wrote:
Ski lessons ? So you won't care what colour the piste markers are.

This is the obvious solution!
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 Then you can post your own questions or snow reports...
Then you can post your own questions or snow reports...
Quote:

Actually, no.

Filters don’t “add” color. It only “removes” colors that don’t correspond to the filter’s color.


Yes.

If you hold a red filter in front of the US flag, the reds would appear to disappear, the whites would appear to be red, and the blues would appear to be purple.

Red + white = red
Red + blue = purple
Red + red = red.

The red filter is adding a colour (superimposing) over the colours on the flag, thus red appears to be 'removed' relative to other colours, in actual fact it is simply lost in contrast.
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After all it is free Go on u know u want to!
No
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Get a piece if white paper, then write your name in a red marker pen, then look at it through a red filter. Depending on the shades of red of the marker and the filter, the writing will appear to disappear, this is because the white appears red and the red appears red, thus the red appears to disappear, but what we're actually seeing is the white becoming red, but our brain perceives that the red has disappeared, it's an optical illusion.

Try it.
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Yes, your last post is correct in describing the effect.

But your explanation of all previous posts were wrong.

Filters don’t “add” colors. Only our (some) brains do. Toofy Grin
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marodo2712 wrote:
Don't forget, by adding a filter you're superimposing a colour on the colours seen,...



You are subtracting a colour (or maybe several colours) when you use a filter.
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 And love to help out and answer questions and of course, read each other's snow reports.
And love to help out and answer questions and of course, read each other's snow reports.
Filters 'overlay' colours, such that red overlaid on blue appears purple, the red is 'added' to the blue, by overly, to create purple, nothing, as per your earlier post is 'removed', especially not colours that 'don't correspond to the filters colour'.
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 So if you're just off somewhere snowy come back and post a snow report of your own and we'll all love you very much
So if you're just off somewhere snowy come back and post a snow report of your own and we'll all love you very much
@Thornyhill, how can using tinted glass 'remove' anything? You are viewing one colour through another, changing the perceived shade of the colour observed. Nothing is subtracted, colours are augmented not removed.
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 You know it makes sense.
You know it makes sense.
@marodo2712, if you like to receive help in properly understand HOW lights and filters work, start a thread in apres. Leave this thread for the OP to receive other useful suggestions.

@enigma, if you can get a hold of a set of color filters, try them on paper piste maps to find the ones that produce useful effects. Keep in mind different resorts may use piste maps of different backgrounds so the effects may differ.
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 Otherwise you'll just go on seeing the one name:
Otherwise you'll just go on seeing the one name:
@marodo2712, the clue is in the name. Filters remove things.
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 Poster: A snowHead
Poster: A snowHead
@abc, i don't need any help thanks, you're the one who obviously hasn't a clue what you're on about, you couldn't have got the following more wrong.

Quote:

Say you’re interested in skiing only blues. Hold up the blue filter. All the red and black fade away, only the blue stands out.


And i have given the OP useful siggestions, he even thanked me, unlike your singular suggestion above which was, to use the anglo saxon, a right load of old w*nk.

@Rabbie, semantics.
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 Obviously A snowHead isn't a real person
Obviously A snowHead isn't a real person
@marodo2712, I suggest you read up on the physics of colour before lecturing people
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 Well, the person's real but it's just a made up name, see?
Well, the person's real but it's just a made up name, see?
@Rabbie, and have you?
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@marodo2712, Yes I have the degree to back it up.
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Anyway, snowHeads is much more fun if you do.
Ok...
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marodo2712 wrote:
@abc, i don't need any help thanks, you're the one who obviously hasn't a clue what you're on about...


except for Rabbie and me. My thesis was about image processing and using both physical and numerical filters. I suspect that you should do as abc says and start a new argument in Apres. Would be better than another brexit thread to be honest.
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 Then you can post your own questions or snow reports...
Then you can post your own questions or snow reports...
As the saying goes “you don’t know what you don’t know”...

3 people who had degrees on related fields know what we do know, and our limit of what we don’t know.

The only one who “knows it all” and doesn’t need the education, is the one who doesn’t know what...?

But this is the Internet. He who shout the loudest will be heard most, whether the message is jewel or garbage. It’s really up to the OP to pick and choose what he gets out of this.

There’s no point in “winning” this argument. It doesn’t bother me the least bit that @marodo2712 continue to believe filters add color Toofy Grin


Last edited by Then you can post your own questions or snow reports... on Sun 21-10-18 22:42; edited 1 time in total
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 After all it is free Go on u know u want to!
After all it is free Go on u know u want to!
A gel or glass filter removes nothing, it augments existing colours with the colour of the filter, overlaying a hue, leaving any colour the same as the filter unchanged, leading to the perception that colours the same as the filter have been filtered out.

Me, web designer, Photoshoper, photographer.
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You'll get to see more forums and be part of the best ski club on the net.
@abc, I don't really know much about colour blindness. I know a lot about filters. I have a notion that colour blindness and filters might be related along with wavelengths and optic nerves and perception but as you correctly state "you don't know what you don't know".

@marodo2712, Start a thread in Apres. None of this is helping the OP but it is quite interesting.
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Oh man, that's sad. Stop digging. The Dunning-Kruger effect is dragging you down.

---
On the OP... try North America, where the black runs have diamond shapes. Greens runs are shown as circles and blues are square. Double black diamonds are the steepest stuff.
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