title: Introduction.
abstract: One of the greatest advantages of the ubiquitous Internet, the free and easy transmission of information, is also one of its greatest weaknesses, leading to the copying and outright theft of information. Of particular interest to the readers of this journal is the theft of images and videos. A content provider may want to publish information without having that information stolen and misrepresented as another's. Legally, the content provider needs to be able to enforce a copyright and convince an impartial arbitrator (e.g., a judge) that the content is his and not the other person's.
authors.forename: G
authors.initials: G
authors.lastname: Arce
authors.forename: C
authors.initials: C
authors.lastname: Boncelet
authors.forename: I
authors.initials: I
authors.lastname: Pitas