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Multimedia Tools and Applications

, Volume 58, Issue 3, pp 633–661 | Cite as

Advanced delivery of sensitive multimedia content for better serving user expectations in Virtual Collaboration applications

  • Maria Teresa Andrade
  • Safak Dogan
  • Anna Carreras
  • Vitor Barbosa
  • Hemantha Kodikara Arachchi
  • Jaime Delgado
  • Ahmet M. Kondoz
Article

Abstract

A major challenge when accessing protected multimedia content in heterogeneous usage environments is the ability to provide acceptable levels of quality of experience to all involving users. Additionally, different levels of protection should be possible to be addressed when manipulating the content towards the quality of experience maximization. This paper describes the use of a context-aware and Digital Rights Management (DRM)-enabled content adaptation platform towards meeting these challenges. The platform was conceived to deliver advanced content adaptation within different application scenarios, among which Virtual Collaboration (VC) was central. Descriptions of use cases implemented by the platform in heterogeneous VC environments are provided. Conducted experiments have highlighted the benefits to users when compared to an operation without the platform. Results of different adaptations suitable to sensed context conditions are also provided and analyzed. A brief description of the platform functionality is included together with pointers to additional information.

Keywords

Context Adaptation DRM Virtual collaborations Ontology reasoning 

Abbreviations

AA

Adaptation authorizer

ADE

Adaptation decision engine

AE

Adaptation engine

AES

Adaptation engine suite

AQoS

Adaptation quality of Service

CAO

Context aware ontology

CS

Classification scheme

CxP

Context provider

DIA

Digital item adaptation

DL

Description logic

DRM

Digital rights management

IROI

Interactive region of interest

GPS

Global positioning system

MDS

Multimedia description schemes

MOS

Mean opinion score

MULTICAO

Multimedia context aware ontology

OWL

Web ontology language

REL

Rights expression language

ROI

Region of interest

SNR

Signal-to-noise ratio

SWRL

Semantic web rule language

UED

Usage environment description

VC

Virtual collaboration

Notes

Acknowledgments

The work presented was partially developed within VISNET II, a European Network of Excellence (http://www.visnet-noe.org), funded under the European Commission IST FP6 programme.

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Maria Teresa Andrade
    • 1
    • 4
  • Safak Dogan
    • 2
  • Anna Carreras
    • 3
  • Vitor Barbosa
    • 1
  • Hemantha Kodikara Arachchi
    • 2
  • Jaime Delgado
    • 3
  • Ahmet M. Kondoz
    • 2
  1. 1.INESC PortoPortoPortugal
  2. 2.I-Lab Multimedia Communications Research, Faculty of Engineering and Physical SciencesUniversity of SurreySurreyUK
  3. 3.Universitat Politecnica de Catalunya, Departament d’Arquitectura de ComputadorsBarcelonaSpain
  4. 4.Faculty of EngineeringUniversity of PortoPortoPortugal

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