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What color is the dress, really?
One of the top social media items today regards the color of the above dress. Is it blue and black? Or white and gold? The internet is in a disarray and a great debate has ensued. Even Taylor Swift has chimed in (her vote is blue and black). I see white with a gold fringe.…
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What is color (in vision)?
Roses are red, Violets are blue, And you probably think That the sky is blue too. Color, however, exists only in the mind: Color is our experience that maps onto the physical luminance properties of visible light and visible-light reflectance properties of objects. Psychologists call this color perception, to recognize that color is more a property…
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Do your eyes always tell you the truth?
To Review: why do we have multiple interpretations of physical world? As pointed out in Genna’s blog, 3D objects in the real world are represented in 2D format on our retina. Our visual system, then, has to take this 2D signal and build back out of the 3D object that caused it. This is a…