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Creating and Detecting Doctored and Virtual Images: Implications to The Child Pornography Prevention Act
Hany Farid
Dartmouth TR2004-518

Abstract: The 1996 Child Pornography Prevention Act (CPPA) extended the existing federal criminal laws against child pornography to include certain types of "virtual porn". In 2002, the United States Supreme Court found that portions of the CPPA, being overly broad and restrictive, violated First Amendment rights. The Court ruled that images containing an actual minor or portions of a minor are not protected, while computer generated images depicting a fictitious "computer generated" minor are constitutionally protected. In this report I outline various forms of digital tampering, placing them in the context of this recent ruling. I also review computational techniques for detecting doctored and virtual (computer generated) images.


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   Hany Farid, "Creating and Detecting Doctored and Virtual Images: Implications to The Child Pornography Prevention Act ." Dartmouth Computer Science Technical Report TR2004-518, September 2004.


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