N. Nikolaidis C. Kotropoulos I. Pitas N. Nikolaidis C. Kotropoulos I. Pitas

Artificial Intelligence and Information Analysis (AIIA) Artificial Intelligence and Information Analysis (AIIA) LaboratoryLaboratory

Department of InformaticsDepartment of InformaticsAristotle University of Thessaloniki, GreeceAristotle University of Thessaloniki, Greece

Intellectual Property Rights Intellectual Property Rights Protection in Digital Media Protection in Digital Media

Digital Media RevolutionDigital Media Revolution

• Usage of digital media has witnessed a tremendous growth Entertainment, arts, educational multimedia

• Advantages Efficient storageEfficient storage Ease / speed of manipulation and transmissionEase / speed of manipulation and transmission

• Disadvantages Vulnerability to copyright infringement, tampering, Vulnerability to copyright infringement, tampering,

unauthorized distributionunauthorized distribution

Can you tell the difference?Can you tell the difference?

Original ImageOriginal Image Watermarked ImageWatermarked Image

IPR Protection TechniquesIPR Protection Techniques

• GoalsGoals Access / usage controlAccess / usage control Copy managementCopy management Copyright certification, authenticationCopyright certification, authentication

• SolutionsSolutions Encryption : Scrambling of data, allow descrambling to Encryption : Scrambling of data, allow descrambling to

authorized users onlyauthorized users only Watermarking: Imperceptible embedding of Watermarking: Imperceptible embedding of

copyright/access control data in digital mediacopyright/access control data in digital media

• Efficient solutions are yet to be foundEfficient solutions are yet to be found

IPR Protection Research FP4/5IPR 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)IST-MUHCI (Multimodal Human-Computer Interaction) ACTS-M2VTS (Multi-modal Verification Techniques for Teleservices and ACTS-M2VTS (Multi-modal Verification Techniques for Teleservices and

Security Applications)Security Applications)

Face verification using elastic graph matchingFace verification using elastic graph matching

•Copyright protection / authentication watermarking of Copyright protection / authentication watermarking of images / video / audioimages / video / audio

IST-CERTIMARK (Certification for watermarking IST-CERTIMARK (Certification for watermarking techniques)techniques)LTR/ESPRIT-INSPECT (Innovative Signal Processing LTR/ESPRIT-INSPECT (Innovative Signal Processing Exploiting Chaotic Dynamics)Exploiting Chaotic Dynamics)RACE-ACCOPI (Access Control and Copyright Protection RACE-ACCOPI (Access Control and Copyright Protection for Images) for Images)

Original ImageOriginal ImageWatermarked ImageWatermarked Image

Has this image been Has this image been tampered?tampered?

YESYES

Original imageOriginal image

Tampered regions Tampered regions overlaid on the imageoverlaid on the image

Detected tampered Detected tampered regionsregions

AIIA Lab ProfileAIIA Lab Profile

• Two faculty membersTwo faculty members• Twenty researchers Twenty researchers • Twenty projects (EU, national)Twenty projects (EU, national)• Three hundred publicationsThree hundred publications• Twenty years of researchTwenty years of research

Image / video processing & analysisImage / video processing & analysis Speech processingSpeech processing 3-D Image processing3-D Image processing BiometricsBiometrics