Optical Illusions
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This Presentation is about optical illusions and visual perceptions based on a Nat Geo Channel Program.
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Optical Illusions
- 1. WHAT DO U SAY IF I SAY THAT YOU ALL HAVE AN X RAY VISION JUST LIKE SUPERMAN ?
- 2. JUST FOLLOW THE IMAGE
- 3. Please read the sign below
- 5. ~An optical illusion is charectarised by visually perceved images that differ from objective reality. ~The information gathered by our eye is processed in the brain to give a perception that does not tally with a physical measurement of the stimulus source.
- 6. Optical illusions are classified into many types.some of the important classifications are :- ->Congnitive Illusions ->unconscious Inference ->Visual Perceptions
- 7. COGNITIVE ILLUSIONS : //Cognitive illusions are assumed to arise by interaction with assumptions about the world leading to ‘UNCONCIOUS INFERNCE’ //It was invented by a German Physicist & physician “HERMAN HELMHOLTS”. This Illusion is again divided into 4 parts. They are :- >Ambiguous Illusions , Distoring , Paradox , Fictions.
- 8. Some of Cognitive Illusions
- 9. VISUAL PERCEPTIONS • ~Illusions can be based on an individual ability to see in 3-dimensional even through the image is 2- dimensional. • PONZO ILLUSION is one such Illusion. • ~In Ponzo Illusion the converging parallel lines tells the brain that the image higher in the visual field is farther away then the brain percives the image to be larger even though the two images hitting the retina at the same time.
- 10. ~Even when we are moving a vehicle sometimes we assume that we are in rest and the surroundings are in motion.
- 11. According to ‘MARK CHANGIZI’ of Rensseler Polytechnic Institute of New York, the optical ilusions are due to a nural lag which most humans experience while awake. ~When light hits the retina about 1/10 of a second goes by before the brain translates the signal into a visual perceptions of the world.
- 12. Opthamologist Albert Ames . Jr who was influenced by the writings of Herman Helmholts created a room called Ames room in 1935.
- 13. PINUMALLA SUMANTH MECHANICAL A1 ROLL NO .14C41A0343