Multimedia Content Adaptation Modelled as a Constraints Matching Problem with Optimisation

Authors:
Fernando Lopez;Jose Maria Martinez
Affiliations:
Universidad Autónoma de Madrid, E-28049 Madrid, Spain;Universidad Autónoma de Madrid, E-28049 Madrid, Spain
Venue:
WIAMIS '07 Proceedings of the Eight International Workshop on Image Analysis for Multimedia Interactive Services
Year:
2007

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Abstract

Within a multimedia adaptation engine working with different adaptation tools and parameters, an important function is the selection of the most appropriate parameters to execute these adaptation tools. MPEG-21 compliant multimedia adaptation engines make use of MPEG-21 description tools to drive the decisions targeting to adapt multimedia content to the usage environment (terminal capabilities, network conditions, user preferences, etc). In this paper, a simple but effective method to model the decision phase of the adaptation engine is presented. This method is based on constraints matching with a final optimisation phase. The proposed system works over MPEG-21 compliant usage environment descriptions, also making use of MPEG-7 content descriptions when available.