@mastersthesis{EURECOM+1196,
  author = {Doërr, Gwenaël J and  Dugelay, Jean-Luc},
  title = {Switching between orthogonal watermarks for enhanced security against collusion in video},
  year = {2003},
  note = {© EURECOM. Personal use of this material is permitted. The definitive version of this paper was published in Research report RR-03-080 and is available at :},
}