Making hidden pictures

[wittgenst3in]

A while ago I saw, (I think it was on fark.com) a photoshop that had fairly little on it, and when you highlighted it it displayed another picture.

If I remember correctly it has something to do with the colours in the image, when the blue highlighting is applied this filters out some other colour, making hidden pictures viewable.

Does anyone know how exactly to do this?

I've seen a similar thing since, which has a standard colourblind test with differing shades and hues. To a colourblind person it read something sweet, and to a non-colourblind person it said something like 'Colour blindness is a disease, pity them'. This didn't rely on highlighting though, but I'm sure it's the same principle.

 

[Rat]

Originally posted by wittgenst3in I've seen a similar thing since, which has a standard colourblind test with differing shades and hues. To a colourblind person it read something sweet, and to a non-colourblind person it said something like 'Colour blindness is a disease, pity them'. This didn't rely on highlighting though, but I'm sure it's the same principle.

I'm not sure about 'disease'. I mean, I can't be an electrician or train driver, and looking at the Snopes summary page is a little tricky, but I'm not claiming disability benefit yet.

Cheers,
Rat.

 

[wittgenst3in]

Re: Re: Making hidden pictures

I'm not sure about 'disease'. I mean, I can't be an electrician or train driver, and looking at the Snopes summary page is a little tricky, but I'm not claiming disability benefit yet.

Cheers,
Rat.

Hey Rat,
The point of it was they were deliberatly being insulting to colour blind people (in a way that they couldn't see).

edit:
rather than seriously claiming it was a disease.

 

[NightG1]

Re: Re: Making hidden pictures

I'm not sure about 'disease'. I mean, I can't be an electrician or train driver, and looking at the Snopes summary page is a little tricky, but I'm not claiming disability benefit yet.

Cheers,
Rat.

I've got blue-green (but other colors are affected as well). I still miss-match my kid's socks (pink with blue, orange with green) which is bad considering it is my job to get them dressed in the morning - bwahahhahaha.

 

[Rat]

Mine's Daltonism, or red-green, as about 10% of men are. Blue-yellow (which I assume to be much the same as blue-green) is much rarer. Sounds weird.

It is a disability, actually, as I am unable to pick strawberries from a field.

A quick test seems to show that highlighting an image will filter out the same blue that the highlighting produces on white. YMMV.

Cheers,
Rat.

 

[wittgenst3in]

Thanks Rat.

BTW does anybody here sneeze when they see a bright light? (Such as morning sunlight etc.)

About 3 members of my family, including me, do. I heard somewhere that 10% of people have this.

 

[ktesibios]

Thanks Rat.

BTW does anybody here sneeze when they see a bright light? (Such as morning sunlight etc.)

About 3 members of my family, including me, do. I heard somewhere that 10% of people have this.

I do- at least sometimes. The light has to be bright enough to be momentarily painful to trigger a sneeze, e.g., spending a while in a darkened room and then walking out into the sun.

 

[jimlintott]

I regularly sneeze when coming into sunlight.

I sneeze then crawl back to my cave.

 

[Nasarius]

BTW does anybody here sneeze when they see a bright light? (Such as morning sunlight etc.)

Yep. I don't think this has happened recently, but whenever I feel like I'm going to sneeze and want to force it, all I have to do is look towards the sun.

Dark chocolate also makes me sneeze, but I think that's a weird, unrelated allergy thing

 

[Kilted_Canuck]

All the males in my family have the sun-sneezing thing. I heard it explained that the optical nerves are quite close to the nerves that leave one's nose and tell the brain it should sneeze. The electrical signals get crossed and the brain gets the wrong message.

I have nothing against a good sneeze so it doesn't bother me much.