TED Talks
Ted: Ted Ed: The Mathematics of Sidewalk Illusions
Have you ever come across an oddly stretched image on the sidewalk, only to find that it looks remarkably realistic if you stand in exactly the right spot? These sidewalk illusions employ a technique called anamorphosis- a special case...
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Art of Anamorphosis
An interesting look at a type of optical illusion art that has been around for ages. You can find a full length description, examples, and downloadable software that will allow you to create your own digital version of this kind of art.