a project financed by the 6th Framework Programme
Please Note: You are viewing the non-styled version of our site. Either your browser does not support Cascading Style Sheets (CSS) or it is disabled.
a project financed by the 6th Framework Programme
The aceMedia value chain requires content which has been engineered to produce self-adaptable information rich media able to accommodate adaptation according to different contexts such as user preferences, network bandwidths, device capabilities and environmental conditions.
WP3 aims to provide adaptability functionalities with the specific objectives of:
The content adaptability according to contexts is at the heart of the ACE concept at the creation stage. This aspect embraces three different areas of work: fully scalable coding, scalable metadata and middleware solutions supporting enhanced portability across networks and platforms. These three tasks lead to fully scalable media and metadata codecs that enable real-time adaptation of content according to the available bandwidth, resources and requirements at the user end. With this technology, the content provider can encode the initial media content to a single bit stream and then the sub-streams according to the user requirements and the available resources can be extracted from this initial bit stream, thus avoiding transcoding, i.e. avoiding decoding the original stream and encoding again at lower bit rates, temporal and spatial resolutions.
To support file transfer and streaming of scalable content, WP3 also works on evaluation and development of content delivery tools for scalable media and metadata in ACEs.
WP3 is led by Queen Mary, University of London (QMUL) and includes Motorola Ltd. and Universidad Autonoma de Madrid (UAM). A total of four tasks will be carried out in this workpackage: scalable media coding, metadata coding, cross media adaptation to support portability and content delivery tools for scalable content. Work related to the first three tasks will be conducted over the whole project life but having higher resources allocation for the first two years, in which the bulk of R&D activities will take place.
WP3 has mainly focused on research and development on of highly scalable video coding (SVC) that supports the main scalability functionalities i.e. quality, spatial and temporal resolution. One of the main goals of aceMedia SVC, which uses wavelet based spatio-temporal decompositions, was to improve spatial scalability at low bit rates. QMUL have researched on scalable generation and coding of motion information, adaptive spatial transforms and efficient spatio-temporal architectures. A scalable content coding framework consists of three modules: encoder, extractor and decoder. The figure below shows a block diagram of a generalised scalable content coding framework.
Cross media adaptation engine provides content adaptation capabilities for the content in ACEs. It allows for a smart selection of content adaptation tools and parameters for a better adaptation to user preferences, network conditions, terminal capabilities and environmental characteristics. Cross media adaptation engine will support real-time services for semantically driven content adaptation.
In order to exploit the new functionality that is possible with scalable media WP3 is developing the tools that will transport ACE content between aceMedia systems.
You Are Here:
Use the following lists to navigate through the site.
Please login to access more features of the site.
© 2004 aceMedia (FP6-001765)
