Optical illusions
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OPTICAL ILLUSIONS. BY KAMILLE C. HERNANDEZ. ILLUSIONS AND PERCEPTION. ILLUSIONS DEPEND ON PERCEPTION PERCEPTION HAS THREE LINKS. THREE LINKS TO PERCEPTION. EXTERNAL / PHYSICAL. VISUAL APARATUS. INTERPRETATION OF STIMULUS. WHAT IS AN OPTICAL ILLUSION ?.

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Optical illusions

OPTICAL ILLUSIONS

BY

KAMILLE C. HERNANDEZ


Illusions and perception
ILLUSIONS AND PERCEPTION

  • ILLUSIONS DEPEND ON PERCEPTION

  • PERCEPTION HAS THREE LINKS


THREE LINKS TO PERCEPTION

EXTERNAL / PHYSICAL

VISUAL APARATUS

INTERPRETATION OF STIMULUS


What is an optical illusion
WHAT IS AN OPTICAL ILLUSION ?

  • illusions that deceive the human visual system into perceiving something that is not present or incorrectly perceiving what is present.


Two types
TWO TYPES

  • PHYSIOLOGICAL ILLUSIONS

  • COGNITIVE VISUAL ILLUSIONS


A physiological illusion
A PHYSIOLOGICAL ILLUSION

  • is the what happens to the eyes as a result of prolonged stimulation. i.e. brightness, tilt, movement, color etc.

  • repetitive stimulation misleads the visual system in the early stages of visual processing.


A cognitive visual illusion
A COGNITIVE VISUAL ILLUSION

  • Exploits the predictive cues of early visual processing.

  • Misdirects in-built assumptions or knowledge while processing.


Three types of visual illusions
Three Types of Visual Illusions

  • Ambiguous Illusions

  • Distorting Illusions

  • Paradox illusions/

  • /Fictitious illusions.


Optical illusions work by exploiting visual cues
OPTICAL ILLUSIONS WORK BY EXPLOITING VISUAL CUES

SOME MONOCULAR CUES

  • Texture Gradient

  • Relative Motion Parallax

  • Linear Perspective

  • Light and Shadow

  • Relative Size


Optical illusions work by exploiting visual cues1
OPTICAL ILLUSIONS WORK BY EXPLOITING VISUAL CUES

Some Binocular Cues

  • Binocular Disparity

  • Convergence

  • Accommodation


Some cool illusions
SOME COOL ILLUSIONS

  • MY SPEECH TIME

  • SLIDE EXPLAINATIONS

  • CLASS PARTICIPATION


The end
THE END

  • REFERENCES

  • INTERNET

  • TEXTBOOK


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