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Joseph Toscano, an assistant professor in the Villanova University Department of Psychology and an expert in illusions, said the image seems to be a type of reversible figure, or a figure that can be interpreted in two different ways. The classic example of this is the Necker cube, a drawing of a three-dimensional cube that seems to be facing one way to some viewers, and another way to others. In an era when just about everyone seems to be doing anything they can to ignite interest online, the great dress debate went viral the old-fashioned way. Get the latest tech news & scoops — delivered daily to your inbox.
For example, say you know your mug is white, but the light being reflected from the mug is slightly red. The brain can then discount a certain amount of red tint from the rest of the scene you are seeing. Other contextual knowledge may come into play, for example you are drinking coffee by the window at dawn. It makes sense for the light to be red-tinted as the illumination source is the sunrise.
The Black and Blue, White and Gold Dress
The retailer of the dress confirmed that the real color of the 'Lace Bodycon Dress' was actually blue and black. For people who see the dress as it is — black and blue — you're likely seeing the photo as over-exposed, with too much light, meaning that once the retina registers the image, the colors appear darker. Natural light has a similar effect—people who thought it was illuminated by natural light were also more likely to see it as white and gold. In a telephone conversation with Business Insider on Thursday evening, McNeill explained that the dress in the picture was worn to her friends' wedding.
In this second photograph, the white wedding dress, dark curtains, visible skin tones and body shadows help us accurately judge the amount of ambient light in the room. I then decided to focus really hard on the middle of the dress, despite being exhausted, and after a few seconds the dress slowly turned black and blue again. Then I let my eyes be tired, and after some time the dress became white and gold. He noted that the trimming on the dress, which some people perceived as gold or black lace, also posed a problem.
Why do people's eyes see different colors on the dress?
And while the dress may in fact be blue and black, the lighting does, for some viewers, make it appear to be white and gold. However, the actual physiology of your eye might come into play with how you perceive the dress. According to Neitz, an individual’s lens, which is part of the eyeball, changes over the course of one’s lifespan. Individuals are less sensitive to blue light when they are older. Which could explain why older netizens are seeing white and gold.
Or in technical terms, you “discount” for the “colour of the illuminant”. Mr. Conway believes that these differences in perception may correspond to the type of light that individuals’ brains expect to be in their environment. Neuroscientist Bevil Conway believes ‘The Dress’ phenomenon marked the greatest extent of individual differences in colour perception ever documented. This additional activation is possibly indicative of the extra effort that white-gold perceivers make to factor in daylight, which leads them to come to the wrong conclusions about color. Make it pretty obvious that at some point your brain switches from wanting to see blue to wanting to see yellow based on the color context.
Is 'the dress' white and gold or blue and black? Visual perception expert weighs in
The dress illusion presented a rare opportunity, as the illusion was related to color. Color is the wavelength or frequency at which light is reflected off a surface. However, the dress surely reflected the same amount of light for everyone, so it was clear that the difference arose later, once an individual’s brain began processing the wavelengths. The black looks gold because the camera's auto white balance removed the blue.
The dress appeared two times per second, with each presentation lasting 250 msec. Each signal was amplified 8X, band-pass filtered (1–30 Hz), and the system computed the average VEP to 70 pattern onsets. Prior to testing, each subject adapted to the white background for about 6 minutes during electrode application.
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Anyway, regardless of the general quality of gizmodo, this was a decent explanation. It points out that in the picture, the colors are pale blue and dark gold. However, the original dress is a darker blue and black. People who see it as blue and black are seeing past the problems with the picture while those who see white and gold are being fooled by the bad colors in the image.
This made the image appear more yellow in hue, hence people saw the dress as white and gold. After disagreements over the perceived colour of the dress in the photograph, the bride posted the image on Facebook, and her friends also disagreed over the colour; some saw it as white with gold lace, while others saw it as blue with black lace. For a week, the debate became well known in Colonsay, a small island community.
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