Graduate School and Research Center in Digital Sciences

Imaging for security applications watermarking & biometrics

T Technical Teaching


  • Watermarking : Watermarking allows owners or providers to hide an invisible and robust message inside a digital Multimedia document, mainly for security purposes such as owner or content authentication. There is a complex trade-off between the different parameters : capacity, visibility and robustness.
  • Biometrics : The security fields uses three different types of authentication : something you know, something you have, ore something you are : a biometric. Common physical biometrics includes fingerprints, hand geometry ; and retina, iris or facial characteristics. Behavioural characters include signature, voice. Ultimately, the technologies could find their strongest role as intertwined and complementary pieces of a multifactor authentication system. In the future biometrics is seen playing a key role in enhancing security, residing in smart cards and supporting personalized Web e-commerce services. Personalization through person authentication is also very appealing in the consumer product area.
  • This course will focus on enabling technologies for Biometrics, with a particular emphasis on person verification and authentication based on or widely using image/video processing.




  • Brief history of information hiding
  • Basic principles and techniques : still images, video and 3-D video objects
  • Expected applications : owner authentication, content authentication, information embedding as communication with side information
  • Evaluation and benchmarking
  • Malicious attacks, bit rate limitation ; counterfeiting marks ; removal attacks, etc.
  • Overview of different attempts to formalize watermarking
Nb hours: 21.00
Control form: examen écrit