Prangl, Martin and Szkaliczki, Tibor and Hellwagner, Hermann (2007) A framework for utility-based multimedia adaptation. IEEE Transactions on Circuits and Systems for Video Technology, 17 (6). pp. 719-728.

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Abstract

Content adaptation is an important issue of multimedia frameworks in order to achieve universal multimedia access (UMA), i.e., to enable consumption of multimedia content independently of the given resource limitations, terminal capabilities, and user preferences. The digital item adaptation (DIA) standard, one of the core specifications of the MPEG-21 framework, supports content adaptation considering a wide range of networks, devices, and user preferences. Most adaptive multimedia frameworks targeting the UMA vision do not consider utility aspects in their adaptation decisions. This paper focuses on a generic semantic-based audio-visual utility model for DIA that aims to enhance the multimedia experience for the user. Our proposed model is able to take the semantics and the perceptual features of the content as well as the users’ specific utility aspects into account. Based on a detailed analysis of these constraints, we will show how the model reacts on individual input data. For choosing the best adaptation decision considering resource limitations on client and server sides as well as network characteristics, we evaluate four algorithms for performing this adaptation decision taking task. We will discuss results according to some use case scenarios.

Item Type:	ISI Article
Uncontrolled Keywords:	Adaptation decision taking, optimization problem, recommender system, semantic quality (SQ), universal multimedia access (UMA), universal multimedia experience (UME), utility model.
Subjects:	Q Science > QA Mathematics and Computer Science > QA75 Electronic computers. Computer science / számítástechnika, számítógéptudomány
Divisions:	ELearning Department
Depositing User:	Eszter Nagy
Date Deposited:	11 Dec 2012 15:27
Last Modified:	11 Dec 2012 15:27
URI:	https://eprints.sztaki.hu/id/eprint/4650

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