Anamorphosis:
http://en.wikipedia.org/wiki/Anamorphosis
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1A. Tutorial (Perspective):
https://www.youtube.com/watch?v=DNO50gU1BGM
1B. Download .PSD Template for Tutorial (Perspective):
http://www.mediafire.com/download/tvtbh3di3b560nw/anamorphic_setup+fixed.psd
https://www.youtube.com/watch?v=XHQ5OG9ABzI
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2A. Tutorial (Cylindrical Mirror Anamorphosis):
http://britton.disted.camosun.bc.ca/anamorphic/cylmirror.html
2B. How to Make a Cylindrical Mirror:
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3A. Tutorial (Anamorphic Hole Illusion):