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Mr. Angry and Ms. Calm - Distance changes face perception? From the page: This is probably one of the best illusions ever! Please do the following: look at the above images from your seat in front of the computer; Mr. Angry is on the left, and Ms. Calm is on the right. Now, get up from your... more
Reviewed by aliasinkhorn Jul 04 2008, 08:54pm ( 76 reviews ) • doctorhugo.org
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Reviewed by khaos67 on Jul 09, 1:03am
Sweet illusion
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Rated by galaxy885 on May 12 2009, 12:31am
Mr. Angry and Ms. Calm Distance changes face perception? This striking illusion helps us understand the role of the neuronal brain mechanism for size constancy in visual perception. I dont know what the creators of the illusion would say, but this is how it seems to me. The two images are each composed of two facial expressions, namely *calm* and *angry*. However, in the face on the left the angry features are composed of high spatial-frequency components, and the calm features are composed of low spatial-frequency components. For the face on the right, calm is expressed by high spatial-frequency features and angry is low frequency. If we view the two faces from a distance of 1 foot, the high-frequency features dominate so the left face is angry while the right face is calm. If we view the faces from a distance of 10 feet, the low-frequency features dominate so the left face is calm while the right face is angry. This all happens because the size-constancy mechanism in the visual system expands the brains representation of the faces to compensate as their retinal size contracts tenfold when we move back from a 1-foot view to a 10-foot view. As this happens, visual resolution is degraded with the increase in viewing distance, and the low-frequency features become dominant. Hence the switch in facial expression. For a detailed neuronal model of the brains putative size-constancy mechanism see *The Cognitive Brain*, pp. 89-93. If there is another explanation for this illusion, I would very much like to see it. Arnold Trehub
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Rated by supaswag on May 11 2009, 5:07am
scary sh*t : )
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Reviewed by raisa4u on Aug 28 2008, 11:48pm
awesome!!!
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Rated by aliasinkhorn on Jul 04 2008, 8:54pm
Mr. Angry and Ms. Calm - Distance changes face perception? From the page: This is probably one of the best illusions ever! Please do the following: look at the above images from your seat in front of the computer; Mr. Angry is on the left, and Ms. Calm is on the right. Now, get up from your seat, and move back 10 or 12 feet. Who's the angry and calm now? Tip my hat to bonbonnie
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Rated by russellN on Jan 17 2008, 1:23am
this is old stuff
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Rated by objectconstant on Dec 24 2007, 9:39pm
perception is what life is all about.
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Rated by sunspirit on Dec 20 2007, 1:21pm
Fascinating use of frequencies to create a distance-dependent illusion.
