Context-aware multimedia processing system in a pervasive environment

Zhuzhong Qian, Song Guo, Minyi Guo, Sanglu Lu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


Service-oriented multimedia processing system is an effective approach to allow dynamic and customized service requests in a pervasive environment. This paper studies the context-aware multimedia processing problem under the consideration of the QoS from two aspects: delay and media quality. The second metric is introduced based on the factor that different display devices can adapt to different media quality to the same request. We propose a new measurement, the media quality change ratio, to quantitively describe the adaptability of source media to meet quality requirement of different devices. We further investigate the important issue on how to find an optimal service path according to the users' requirements which are formulated as functional paths. Previous work on the path construction is only based on one fixed functional path. We propose a heuristic algorithm CMpath that explores multiple functional paths and thus can generate a service path to meet both low-delay and media quality requirements. Our experimental results also validate the proposed algorithm.
Original languageEnglish
Title of host publicationGLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference
Publication statusPublished - 1 Dec 2009
Externally publishedYes
Event2009 IEEE Global Telecommunications Conference, GLOBECOM 2009 - Honolulu, HI, United States
Duration: 30 Nov 20094 Dec 2009


Conference2009 IEEE Global Telecommunications Conference, GLOBECOM 2009
Country/TerritoryUnited States
CityHonolulu, HI


  • Context-aware
  • Multimedia processing
  • Pervasive computing
  • Service composition

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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