Understanding Optical Illusions by Mohit Gupta.pdf

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Understanding Optical Illusions

Mohit Gupta

What are optical illusions?

Perception: I see

Light (Sensing)

Truth: But this is an

Oracle

Optical Illusion in Nature

Image Courtesy: http://apollo.lsc.vsc.edu/classes/met130/notes/chapter19/graphics/infer_mirage_road.jpg

A Brightness Illusion

Different kinds of illusions

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Brightness and Contrast Illusions

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Twisted Cord Illusions

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Color Illusions

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Perspective Illusions

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Relative Motion Illusions

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Illusions of Expressions