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MPEG‐7/21: Structured Metadata for Handling and Personalizing Multimedia Content

In the digital age the idea of universal multimedia access (UMA) is paramount. The knowledge society demands that everybody should have access to every kind of media anytime, anywhere independent of the technical device he/she uses. This evolution is also pushed by the hardware producers for entertainment devices. In the last years, more and more different kinds of portable devices were developed that embrace the idea of UMA, e.g. Netbooks, Smartphones or the IPhone. The market for these devices is constantly growing: manufacturers actually had problems to accommodate the demand of popular devices like e.g., the IPhone or the Eee PC. Since every device is used in different environmental settings and has different technical limitations, personalization aspects regarding individual content adaptation are essential. In this Chapter we will in detail describe the current personalization features of MPEG-7/21, apply them on real world scenarios, and investigate novel techniques to extend the personalization capabilities. Beside the number of multimedia devices also the number of available audiovisual media continues to increase rapidly. Due to faster Internet connections users have (mobile) access to a plethora of different multimedia content. To make the actual resources searchable and accessable basic features like e.g. title or filetype, together with a textual content description (metadata) of each resource are necessary. MPEG-21 includes all aspects regarding access and transmission of multimedia resources and thus offers excellent prospects for sufficiently describing multimedia resources for supporting personalized media access. During the last years, with the idea of Universal Multimedia Experience (UME) a more user-centric perspective occured. The aim is to increase the Quality of Service (QoS) and