Brightness Perception

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Presentation transcript:

Brightness Perception Arash Fazl

Vision Scientist’s Favorite Piece of Art

Light Reflected off a Surface Varies with Ambient Light In a Dark Room In Bright Sunshine 1 10000000000 The Brain Needs to Discount the illuminant Luminance vs Brightness

Brain Compares… Simultaneous Contrast Illusion- http://persci.mit.edu/people/adelson/

…Brain Compares

Herman Grid

Scintillating Grid

Wertheimer-Koffka Ring Pitting Shape Perception Against Brightness Perception http://www.michaelbach.de/ot/

Simultaneous Contrast Failure: Munker-White Illusion Pitting Depth Perception Against Brightness Perception Darker or lighter surround cannot explain the illusion

3D Structure and Brightness http://web.mit.edu/persci/people/adelson/

Craik-O'Brien-Cornsweet Illusion

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