Contract Expression Languages allow representing business contracts in a digital and structured form. Some examples are the Content Reference Forum format, the OASIS eContracts standard or a proposed extension for MPEG-21 Part 5. These formats have influenced the design of the MPEG-21 Contract Expression Language (CEL), which has been recently specified by modelling the most relevant clauses in audiovisual contracts. The MPEG-21 CEL, described in this paper, defines a language for representing media contracts as XML. It is structured in two schemas, a core defining the structural elements of a contract, and an extension with vocabulary for specific applications.
Doller, M.; Tous, R.; Temmermans, F.; Yoon, K.; Park, J.; Kim, Y.; Stegmaier, F.; Delgado, J. IEEE multimedia Vol. 20, num. 4, p. 38-48 DOI: 10.1109/MMUL.2012.60 Data de publicació: 2013-10 Article en revista
Triggered by the rise of social networks, community-based image sharing platforms are emerging at an increasing rate. Currently, almost every repository offers a different interaction interface and metadata description format. Unfortunately, this prevents unified and efficient access to these repositories. Consequently, data exchange between systems is often cumbersome. In this context, ISO/IEC JTC1 SC29 WG1 (more commonly known as JPEG) initiated the JPSearch framework standardization, which aims to foster the interaction with and among image repositories. The standard focuses on three main cornerstones supporting repository synchronization, search and access, and image collection creation and maintenance. This article discusses the main concepts, parts, and achievements of the JPSearch framework and demonstrates its use through a set of substantial case studies.
This article analyzes existing initiatives and proposes new technologies for the governed adaptations of secured content in heterogeneous environments. These technologies are integrated into an architecture for the secure management of multimedia content.
Carreras, A.; Delgado, J.; Rodriguez, E.; Barbosa, V.; Andrade, M.; Arachchi, H.; Dogan, S.; Kondoz, A. IEEE multimedia Vol. 17, num. 2, p. 74-89 DOI: 10.1109/MMUL.2009.61 Data de publicació: 2010-04 Article en revista