상세정보
학술대회
MPEG-21 DIA-based Video Adaptation Framework and its Application to Rate Application
- 발행일
- 200508
- 출처
- Applications of Digital Image Processing XXVIII (SPIE 5909), v.5909, pp.1-14
- 협약과제
- 05MR3100, 통방융합 환경에서의 유비쿼터스 콘텐츠 서비스 기술 개발, 홍진우
- 초록
- In universal media access (UMA) environment, because of the heterogeneous networks and terminals, flexible video adaptation, that is performed according to the network conditions and terminal capabilities as well as user preferences, is required to maximize consumer experience and ensure Quality of Service (QoS). MP EG-21 Digital Item Adaptation (DIA) support an interoperable framework for effective and efficient video adaptation. Among MPEG-21 DIA tools, utility function that describes the relations among the feasible adaptation operation, resource constraint, and utility plays the most important role in adaptation process because the optimal adaptation operation is decided among the feasible adaptation operations with given constraints. Therefore, in this paper, the overall concept of MEPG-21 DIA based adaptation framework and formulation of utility function are presented. In addition, the feasibility of the adaptation framework is presented by applying it to a few use cases for generating utility function and applications to specific adaptation scenarios involving nonscalable and scalable video.
- KSP 제안 키워드
- Adaptation process, Consumer Experience, MPEG-21, Media access, Resource constraints, Scalable Video, Use Cases, adaptation framework, heterogeneous network(HetNet), quality of service(QoS), user preference