Thursday, February 7, 2013

Who's on the picture?

Who's on the picture?
Scroll down for some interesting details and scientific explanation....
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Who's on the picture?

How you perceive the image depends on the distance from which you are viewing it.

This is one of a series of hybrid images created by Aude Oliva of the Computational Visual Cognition Lab at MIT.Here's an explanation of how these images work.

The work carried out by Oliva's group shows that the brain extracts large-scale features slightly earlier than fine-grained features. Large scale features are processed within 50 milliseconds, giving an overall impression of the visual scene. The processing of fine-grained details begins slightly later, at around 100 milliseconds. The fine- and coarse-grained features are extracted separately, and processed in parallel through different channels, in successively higher order areas of the visual cortex. In a process called perceptual grouping, the information from the channels is then seamlessly recombined at visual cortical areas of the highest order to produce a coherent, and usually unambiguous, image.

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