1. N. Nikolaidis C. Kotropoulos I. Pitas Artificial Intelligence and Information Analysis (AIIA) Laboratory Department of Informatics Aristotle University of Thessaloniki, Greece N. Nikolaidis C. Kotropoulos I. Pitas Artificial Intelligence and Information Analysis (AIIA) Laboratory Department of Informatics Aristotle University of Thessaloniki, Greece Intellectual Property Rights Protection in Digital Media

2. Digital Media Revolution Usage of digital media has witnessed a tremendous growth   Entertainment, arts, educational multimedia Advantages  Efficient storage  Ease / speed of manipulation and transmission Disadvantages  Vulnerability to copyright infringement, tampering, unauthorized distribution

3. Can you tell the difference? Original Image Watermarked Image

4. IPR Protection Techniques GoalsGoals  Access / usage control  Copy management  Copyright certification, authentication SolutionsSolutions  Encryption : Scrambling of data, allow descrambling to authorized users only  Watermarking: Imperceptible embedding of copyright/access control data in digital media Efficient solutions are yet to be foundEfficient solutions are yet to be found

5. IPR Protection Research FP4/5 Face verification for secure access to multimedia services Face verification for secure access to multimedia services  IST-MUHCI (Multimodal Human-Computer Interaction)  ACTS-M2VTS (Multi-modal Verification Techniques for Teleservices and Security Applications) Face verification using elastic graph matching

6. Copyright protection / authentication watermarking of images / video / audioCopyright protection / authentication watermarking of images / video / audio  IST-CERTIMARK (Certification for watermarking techniques)  LTR/ESPRIT-INSPECT (Innovative Signal Processing Exploiting Chaotic Dynamics)  RACE-ACCOPI (Access Control and Copyright Protection for Images) Original Image Watermarked Image

7. Has this image been tampered? YES Original image Original image

8. Tampered regions overlaid on the image Detected tampered regions

9. AIIA Lab Profile Two faculty membersTwo faculty members Twenty researchersTwenty researchers Twenty projects (EU, national)Twenty projects (EU, national) Three hundred publicationsThree hundred publications Twenty years of researchTwenty years of research  Image / video processing & analysis  Speech processing  3-D Image processing  Biometrics