'The Dress' caught the public's imagination. “這衣著”引起了公眾的想像力

In bright daylight is blueish so the brain subtracts blue light. Under artificial light, it gets rid of yellows. Crucially, it relies on other nearby colours, such as reds and greens, to work out how much light to remove. In the case of the dress, these reference colours were missing and the brain had to rely on experience
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'The Dress' caught the public's imagination in February, after a photo of it was posted on Tumblr. Some people were adamant it was blue and black. Others insisted it was white and gold.
http://www.dailymail.co.uk/sciencetech/article-3320480/The-image-HACK-brain-Optical-illusion-transforms-black-white-picture-colour-simply-staring-it.html