Docstoc

Types of Optical Illusions

Document Sample
Types of Optical Illusions Powered By Docstoc
					OPTICAL ILLUSIONS
BY KAMILLE C. HERNANDEZ

8/12/2008 1

ILLUSIONS AND PERCEPTION
• ILLUSIONS DEPEND ON PERCEPTION • PERCEPTION HAS THREE LINKS

8/12/2008 2

THREE LINKS TO PERCEPTION

EXTERNAL / PHYSICAL

VISUAL APARATUS
INTERPRETATION OF STIMULUS

8/12/2008 3

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.

8/12/2008 4

TWO TYPES
• PHYSIOLOGICAL ILLUSIONS • COGNITIVE VISUAL ILLUSIONS

8/12/2008 5

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.

8/12/2008 6

A COGNITIVE VISUAL ILLUSION
• Exploits the predictive cues of early visual processing. • Misdirects in-built assumptions or knowledge while processing.

8/12/2008 7

Three Types of Visual Illusions
• Ambiguous Illusions • Distorting Illusions • Paradox illusions/
• /Fictitious illusions.

8/12/2008 8

OPTICAL ILLUSIONS WORK BY EXPLOITING VISUAL CUES
SOME MONOCULAR CUES

1. Texture Gradient 2. Relative Motion Parallax
3. Linear Perspective

4. Light and Shadow 5. Relative Size
8/12/2008 9

OPTICAL ILLUSIONS WORK BY EXPLOITING VISUAL CUES
Some Binocular Cues • Binocular Disparity • Convergence
• Accommodation

8/12/2008 10

SOME COOL ILLUSIONS
• MY SPEECH TIME • SLIDE EXPLAINATIONS • CLASS PARTICIPATION

8/12/2008 11

8/12/2008 12

8/12/2008 13

8/12/2008 14

8/12/2008 15

8/12/2008 16

8/12/2008 17

8/12/2008 18

8/12/2008 19

8/12/2008 20

8/12/2008 21

8/12/2008 22

8/12/2008 23

8/12/2008 24

8/12/2008 25

8/12/2008 26

8/12/2008 27

8/12/2008 28

8/12/2008 29

8/12/2008 30

8/12/2008 31

8/12/2008 32

8/12/2008 33

8/12/2008 34

8/12/2008 35

8/12/2008 36

8/12/2008 37

8/12/2008 38

8/12/2008 39

8/12/2008 40

8/12/2008 41

8/12/2008 42

8/12/2008 43

8/12/2008 44

8/12/2008 45

8/12/2008 46

8/12/2008 47

8/12/2008 48

8/12/2008 49

8/12/2008 50

8/12/2008 51

8/12/2008 52

8/12/2008 53

8/12/2008 54

8/12/2008 55

8/12/2008 56

8/12/2008 57

8/12/2008 58

8/12/2008 59

8/12/2008 60

8/12/2008 61

8/12/2008 62

8/12/2008 63

8/12/2008 64

8/12/2008 65

8/12/2008 66

8/12/2008 67

8/12/2008 68

THE END
• REFERENCES • INTERNET • TEXTBOOK

8/12/2008 69


				
DOCUMENT INFO
Shared By:
Stats:
views:3932
posted:4/17/2008
language:English
pages:69