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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 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 ? • illusions that deceive the human visual system into perceiving something that is not present or incorrectly perceiving what is present.
TWO TYPES • PHYSIOLOGICAL ILLUSIONS • COGNITIVE VISUAL ILLUSIONS
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 • Exploits the predictive cues of early visual processing. • Misdirects in-built assumptions or knowledge while processing.
Three Types of Visual Illusions • Ambiguous Illusions • Distorting Illusions • Paradox illusions/ • /Fictitious illusions.
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 CUES Some Binocular Cues • Binocular Disparity • Convergence • Accommodation
SOME COOL ILLUSIONS • MY SPEECH TIME • SLIDE EXPLAINATIONS • CLASS PARTICIPATION