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Optical IllusionOptical Illusion
Presentation byPresentation by
Sharon K. BriggsSharon K. Briggs
Computer Science 30Computer Science 30
George Washington UniversityGeorge Washington University
Optical IllusionOptical Illusion
Trompe L’Oeil is another name for Optical Trompe L’Oeil is another name for Optical Illusion which means fooling the eyeIllusion which means fooling the eye
The National Gallery of Art had an exhibit The National Gallery of Art had an exhibit called called Deceptions and Illusions: Five Deceptions and Illusions: Five Centuries of Trompe L’Oeil Painting Centuries of Trompe L’Oeil Painting at the at the end of last year which ended early March.end of last year which ended early March.
http://www.nga.gov/home.htmhttp://www.nga.gov/home.htm
Tricking the eye has been around for Tricking the eye has been around for centuriescenturies
1570 Ludger Tom Ring the 1570 Ludger Tom Ring the YoungerYounger
1760 Luis Melendez oil on 1760 Luis Melendez oil on canvas Still Life with Figs and canvas Still Life with Figs and
BreadBread
What causes optical Illusion?What causes optical Illusion?
Depth perception and binocular Depth perception and binocular disparity is developed in infants disparity is developed in infants between the ages of 3 ½ to 6 months.between the ages of 3 ½ to 6 months.
Optical Illusion takes place in the brain Optical Illusion takes place in the brain rather than in the eyes.rather than in the eyes.
How do we know this?How do we know this?
With the emerging technology and With the emerging technology and computers in the 1960’s Psychologist computers in the 1960’s Psychologist attached electrodes to infants’ heads,attached electrodes to infants’ heads,which were attached to computers. which were attached to computers.
Those computers measured the Those computers measured the electrical impulses that are used by electrical impulses that are used by the brain when it is active.the brain when it is active.
Entertainment From The Entertainment From The PastPast
Charles Charles Wheatstone Wheatstone Developed the first Developed the first stereoscope in stereoscope in 18381838
Entertainment NowEntertainment Now
http://www.cs.brown.edu/stc/http://www.cs.brown.edu/stc/home.htmlhome.html
Your eyes want to complete the Your eyes want to complete the lines. This picture was found lines. This picture was found on the web site for my on the web site for my Psychology class. Psychology class.
Now we can use the Now we can use the internet to find Optical internet to find Optical Illusions with search Illusions with search engines or create your own.engines or create your own.
Ask JeevesAsk JeevesGoogleGoogleNorthern LightNorthern LightYahooYahoo
Found with Ask JeevesFound with Ask JeevesGrand IllusionsGrand Illusions
Welcome to Grand Illusions, the site for the enquiring mind. Welcome to Grand Illusions, the site for the enquiring mind. With optical illusions, scientific toys, visual effects, and even a With optical illusions, scientific toys, visual effects, and even a
little magic. little magic.
The below can be found in:The below can be found in:Ask JeevesAsk JeevesGoogleGoogleYahooYahoo
Sandlot ScienceSandlot ScienceInteractive optical illusions, games, Interactive optical illusions, games, science projects, fun puzzles, and science projects, fun puzzles, and distortions.distortions.
Our you can make your own on Our you can make your own on your PC with the Paint your PC with the Paint
Program.Program.
Next are just a few of my Next are just a few of my favorite Optical Illusions found favorite Optical Illusions found
eithereitheron the web or on the web or
from my Psychology class.from my Psychology class.
Old or Old or Young.Young.
Which is it?Which is it?
The below picture is from my The below picture is from my Psychology Professors slide Psychology Professors slide
show.show.
Optical Illusion can be found in Optical Illusion can be found in every day lifeevery day life
Your homeYour home ClothingClothing ArchitectureArchitecture
Your HomeYour Home
Bedroom (locate with Bedroom (locate with any search engine.any search engine. http://http://
groups.msn.com/groups.msn.com/QuiltingAroundtheWorld QuiltingAroundtheWorld
Your walls (locate with Your walls (locate with any search engine.any search engine. Shop for Shop for PaintingsPaintings at at
MSN Shopping MSN Shopping
ClothingClothing
You can find You can find information on the information on the Internet that can Internet that can tell you how to tell you how to dress to look your dress to look your best by Optical best by Optical Illusion.Illusion.
TallerTaller Avoid problem areasAvoid problem areas So and so on.So and so on. For both men and For both men and
womenwomen
ArchitectureArchitecture
Was drawn by hand in the past: Was drawn by hand in the past: ParthenonParthenon
ArchitectureArchitecture
Now Computer Now Computer Assisted Drafting Assisted Drafting and Design is used.and Design is used.
In other words CADDIn other words CADD
This has not been This has not been round that long round that long 80’s.80’s.