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The controversy over "dress-gate" began on a Tumblr page where a user asked others to help her decide the true color of the dress.
The reason is probably so we can ignore the irrelevant information, i.e. the light colour and any sensitivity lag between the different cones and identify objects. It's also possible to be get quite a bit closer to grey, so I think to claim that the dress "actually IS white/grey" is pushing it a bit. Compare the disputed "blue/white" parts of the image to an actual grey of the same intensity side-by-side and I don't there's any way someone with normal eyesight could fail to see the difference.
Kenda Boxy Padded Jacket Black
Curiously, the xkcd comic doesn't fool my eyes at all. Yes, the photo was washed out and so looked different than the physical dress. When I see stuff like that, my brain corrects the image for me.
Put it into to Photoshop and eye-dropper the colours. In real life, the dress would be in a large field of view, with other objects illuminated in the same way. Our brains would be able to separate the garment's lighting from its intrinsic color, Williams said. "I think the brain has just made a different assumption about how the dress is being illuminated." Now, the neurons fire the way they do because of electrical signals that are sent to them by the eyes, but electrical signals aren't colors either—they’re just, roughly put, moving electrons. And your eyes send the signals they do because of the way wavelengths of light interact with their rods and cones.
Initial viral spread
However, when I looked closer for a minute or two my color perception shifted to blue/burnt orange and that's all I see now. A BuzzFeed page devoted to the debate had more than 25 million views early Friday, with 72 percent of Internet users insisting the dress was white and gold, while 28 percent swore it was blue and black. The post went viral on Twitter, Facebook and other social media platforms, with users passionately split over what color the dress really is—blue with black lace, or white with gold lace. For example, if your brain assumes the lighting on the dress is very dim, it will assume the dress itself is highly reflective, or white and gold, Williams said.
The average VEP waveform in response to 70 pattern onsets was recorded twice from each subject and amplitude in microvolts (μV) vs. latency (msec.) were exported as digital values to compare VEPs across BB and WG groups. The Dress as seen on the internet shown in A and the actual blue and black dress is shown in B. C shows an extracted image of the Dress consisting of vertical stripes of decreasing spatial frequency that was used in the present study to explore perception of the dress with limited contextual cues. The photo sparked confusion, anger and fascination, because despite the dress definitely being blue and black, to many, it appeared gold and white.
Science X
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This morning, I saw it on my phone in my darkened bedroom, and it was clearly blue and brown. Well, it turns out some people see it as blue and black, while others see it as white and gold. Despite the Internet memes, how you see it tells you nothing about whether you are depressed, manic, crazy, or whatever. It simply has to do with differences in the way our eyes process light and our brains process visual information. In February, Caitlin McNeill, a 21-year-old singer, had posted a picture on her blog of a dress that was blue and black, but was being seen as white and gold by some people. The dress went viral on the Internet, with celebrities like Taylor Swift jumping in to debate the colour.
“It has to do with the tiny cones in the back of our eyeballs that perceive colors in a slightly different way depending upon our genes,” explains CNN’s Senior Medical Correspondent Elizabeth Cohen. People who saw the dress couldn't seem to decide in an epic optical illusion.The BuzzFeed article exploded with more than 38 million readers arguing over the dress' colors . If your room is North-facing, it will have more gray light with slight blue cast. This means any gray paint you select will look more blue.
On one screen, the blue stand outs a little stronger. On another screen, the blue seems more faded towards white. Some programmes on TV over here (including the excellent Last Leg - see it on C4 player) had it on the show, it really is blue and black. It's possible to be balanced far more towards blue.
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