A Framework for Personalized Utility-Aware IP-Based Multimedia Consumption

Providing transparent and augmented use of multimedia con-tent across a wide range of networks and devices is still a challenging task within the multimedia research community. Multimedia adaptation was figured out as a core concept to overcome this issue. Most multimedia adaptation engines for providing Universal Multimedia Access (UMA) scale the content under consideration of terminal capabilities and re-source constraints but do not really consider individual user preferences. This paper introduces an adaptive multimedia framework which offers the user a personalized content vari-ation for satisfying his/her individual utility preferences. 1

A framework for utility-based multimedia adaptation

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

Utility model-based adaptation of multimedia content

Utility model-based adaptation is used to provide the best possible experience to the user consuming multimedia content under given user preferences, device, and network constraints