MPEG-21 Standardization Process: Organization and Rate Distortion Modeling for Network Adaptation
نویسندگان
چکیده
An overview of MPEG-21 standard together with the application of the rate distortion theory in modeling for network adaptation is provided. The first section introduces parts of this standard as well as motivation and objective for all of them. Next section deals with Digital Item Adaptation (DIA) as a part of the MPEG-21 Multimedia Framework. DIA specifies metadata for assisting the adaptation of digital items according to the constraints on the storage transmission and consumption. In that way various types of quality of service management are enabled. Finally, the third section describes DIA use in multimedia applications and reports on some of the activities in MPEG-21 on extending DIA for the use in the rate distortion modeling for network adaptation. Key-Words: Digital Item Adaptation, MPEG-21 standard, rate distortion, QoS.
منابع مشابه
A Knowledge Supported Approach for Multi-step Media Adaptation
In order to enable transparent and augmented use of multimedia resources across a wide range of networks and devices, the forthcoming MPEG-21 standard aims at integrating the various existing technologies for delivery and consumption of digital content in a common multimedia framework. Digital Item Adaptation is one of the core concepts of the framework that will support the adaptation of multi...
متن کاملAdvanced Multimedia Management – Control Model and Content Adaptation
The delivery and the adaptation of multimedia content in distributed and heterogeneous environments require flexible control and management mechanisms in terminals and/or in control entities inside the network to enable terminal and application mobility. It is important to reach interoperability between the IETF approaches and the MPEG-21 DIA efforts for multimedia streaming and adaptation to c...
متن کاملAn Optimal Framework of Video Adaptation and Its
The adaptation of video according to the heterogeneous and dynamic resource constraints on networks and devices, as well as on user preferences, is a promising approach for universal access and consumption of video content. For optimal adaptation that satisfies the constraints while maximizing the utility that results from the adapted video, it is necessary to devise a systematic way of selecti...
متن کاملAdvanced Multimedia Management - Control Model and Content Adaptation
The delivery and adaptation of multimedia content in distributed and heterogeneous environments requires flexible control and management mechanisms in terminals and in control entities inside the network. In the near future, it is important to reach interoperability between the IETF approaches on multimedia session establishment and control and the MPEG-21 efforts for multimedia streaming and a...
متن کاملMPEG-21 Digital Item Adaptation
Synonym: Overview of Part 7 of the MPEG-21 Multimedia Framework; Interoperable description formats facilitating the adaptation of multimedia content; ISO standard enabling device and coding format independence; Definition: MPEG-21 Digital Item Adaptation (DIA) enables interoperable access to (distributed) advanced multimedia content by shielding users from network and terminal installation, man...
متن کامل