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Physical Sciences and Mathematics Commons™
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Full-Text Articles in Physical Sciences and Mathematics
Mpeg-21 Digital Item Declaration And Identification-Principles And Compression, I. S. Burnett, S. J. Davis, G. M. Drury
Mpeg-21 Digital Item Declaration And Identification-Principles And Compression, I. S. Burnett, S. J. Davis, G. M. Drury
Faculty of Informatics - Papers (Archive)
At the core of the MPEG-21 Multimedia Framework is the concept of the Digital Item, a virtual container for a hierarchical structure of metadata and resources. This paper considers the Digital Item Declaration Language (DIDL), gives examples of its usage, and discusses how it is used to integrate other parts of MPEG-21. The paper then discusses how Digital Item Identification integrates with the DIDL to allow MPEG-21 to utilize standard identifiers from many application spaces. Finally, an alternative, compressed form of the XML Digital Item Declaration is described. This uses schema-based compression to significantly reduce the size of these XML …
Dynamic Resource Adaptation In A Heterogeneous Peer-To-Peer Environment, Letian Rong, I. Burnett
Dynamic Resource Adaptation In A Heterogeneous Peer-To-Peer Environment, Letian Rong, I. Burnett
Faculty of Informatics - Papers (Archive)
This paper focuses on metadata-based, multimedia resource representation and retrieval in a P2P environment as a means of universal multimedia access (UMA). The primary focus of the work is a P2P architecture, which uses MPEG-21 as standards based technique to dynamically adapt resources to various usage environments. In the architecture, a super peer based approach is used to cluster peers, store peer information, perform searches and instruct peers to adapt/send resources. Also a two-stages based adaptation method is introduced to adapt search results and resources in an intelligent manner based on the usage environment attributes. The concept is demonstrated using …