12 research outputs found
Rights and services interoperability for multimedia content management
The main goal of the work presented in this thesis is to describe the definition of interoperability mechanisms between rights expression languages and policy languages. Starting from languages interoperability, the intention is to go a step further and define how services for multimedia content management can interoperate by means of service-oriented generic and standardised architectures.
In order to achieve this goal, several standards and existing initiatives will be analysed and taken into account. Regarding rights expression languages and policy languages, standards like MPEG-21 Rights Expression Language (REL), Open Digital Rights Language (ODRL) and eXtensible Access Control Markup Language (XACML) are considered. Regarding services for content management, the Multimedia Information Protection And Management System (MIPAMS), a standards-based implemented architecture, and the Multimedia Service Platform Technologies (MSPT), also known as MPEG-M standard, are considered.
The contribution of this thesis is divided into two parts, one devoted to languages interoperability and the other one devoted to services interoperability, both addressed to multimedia content management. They are briefly described next.
The first part of the contribution describes how MPEG-21 REL, ODRL and XACML can interoperate, defining the mapping mechanisms to translate expressions from language to language. The mappings provided have different levels of granularity, starting from a mapping based on a programmatic approach coming from high-level modelling diagrams done using Unified Modelling Language (UML) and Entity-Relationship (ER). The next level of mappings includes specific mappings between MPEG-21 REL and XACML and ODRL and XACML. Finally, a more general solution is proposed by using a broker. Part of this work was done in the context of the VISNET-II Network of Excellence and the AXMEDIS Integrated Project. The findings done prove the validity of the interoperability methods described.
The second part of the contribution describes how to describe standards based building blocks to provide interoperable services for multimedia content management. This definition is based on the analysis of existing content management use cases, from the ones involving less security over multimedia content managed to the ones providing full-featured digital rights management (DRM) (including access control and ciphering techniques) to support secure content management. In this section it is also presented the work done in the research projects AXMEDIS, Musiteca and Culturalive. It is also shown the standardisation work done for MPEG-M, particularly on elementary services and service aggregation. To demonstrate the usage of both technologies a mobile application integrating both MPEG-M and MIPAMS is presented.
Furthermore, some conclusions and future work is presented in the corresponding section, together with the refereed publications, which are briefly described in the document. In summary, the work presented can follow different research lines. On the one hand, further study on rights expression languages and policy languages is required as new versions of them have recently appeared. It is worth noting the standardisation of a contract expression language, MPEG-21 CEL, which has also to be further analysed in order to evaluate its interoperability with rights and policy languages. On the other hand, standard initiatives must be followed in order to complete the map of SB3's, considering MPEG standards and also other standards not only related to multimedia but also other application scenarios, like e-health or e-government
Implementing mobile applications with the MIPAMS content management platform
New mobile devices (pda’s, tablets) permit the implementation of new business models as they are always connected and provide multimedia capabilities for capturing images, videos, music or even conversations. Together with an architecture for the secure management and distribution of multimedia content called MIPAMS, we propose a mobile business model with the implementation of a mobile application based on iOS (Apple operating system for mobile devices) for publishing added value content captured with a mobile device.Peer ReviewedPostprint (author’s final draft
A web-based rights management system for developing trusted value
We present an innovative architecture that enables the digital
representation of original works and derivatives while
implementing Digital Rights Management (DRM) features. The
architecture’s main focus is on promoting trust within the
multimedia content value networks rather than solely on content
access and protection control. The system combines different
features common in DRM systems such as licensing, content
protection, authorization and reporting together with innovative
concepts, such as the linkage of original and derived content and
the definition of potential rights. The transmission of reporting
requests across the content value network combined with the
possibility for authors to preserve rights over derivative works
enables the system to distribute income amongst all the actors
involved in different steps of the creation and distribution chain.
The implementation consists of a web application which
interacts with different external services plus a desktop user
application used to render protected content. It is currently
publicly accessible for evaluation.Postprint (published version
Access control issues in social networks
Social Networks, as the main axis of Web 2.0, are creating a number
of interesting challenges to the research and standardisation communities. In
this paper, we analyse the current and future use of access control policies in
Social Networks. Subsequently, two main issues are addressed: the
interoperability amongst systems using different policy languages and the lack
of elements in the existing policy languages when trying to express Social
Networks’ access control. In particular, our approach is based on the use of the
XACML standard.Postprint (published version
Access control issues in social networks
Social Networks, as the main axis of Web 2.0, are creating a number
of interesting challenges to the research and standardisation communities. In
this paper, we analyse the current and future use of access control policies in
Social Networks. Subsequently, two main issues are addressed: the
interoperability amongst systems using different policy languages and the lack
of elements in the existing policy languages when trying to express Social
Networks’ access control. In particular, our approach is based on the use of the
XACML standard
Implementing mobile applications with the MIPAMS content management platform
New mobile devices (pda’s, tablets) permit the implementation of new business models as they are always connected and provide multimedia capabilities for capturing images, videos, music or even conversations.
Together with an architecture for the secure management and distribution of multimedia content called MIPAMS, we propose a mobile business model with the implementation of a mobile application based on iOS (Apple operating system for mobile devices) for publishing added value content captured with a mobile device.Peer Reviewe
Definition of standards-based building blocks for multimedia content management
The emergence of new ways of rendering multimedia content from a multiplicity of devices like tablets, smartphones, consoles or smart TVs, opens a complete set of new opportunities for multimedia services providers. It is important that the development of those disruptive services is done in an interoperable way. Existing service-oriented middleware platforms and recently developed standards devoted to the definition and implementation of complex multimedia services may speed up its development. In this context, the identification of different content management scenarios including the high-level functionalities they require is an important aspect to be able to implement services in a flexible and interoperable way. Use of standards and standards-based architectures will be a key aspect to combine services offered by different providers. In this paper, we propose the definition of standards-based building blocks based on the high-level functionalities required by content management and distribution scenarios. This will facilitate provision of complex new services specially focused, but not limited to, the management and distribution of multimedia content.Peer Reviewe
Implementing mobile applications with the MIPAMS content management platform
New mobile devices (pda’s, tablets) permit the implementation of new business models as they are always connected and provide multimedia capabilities for capturing images, videos, music or even conversations.
Together with an architecture for the secure management and distribution of multimedia content called MIPAMS, we propose a mobile business model with the implementation of a mobile application based on iOS (Apple operating system for mobile devices) for publishing added value content captured with a mobile device.Peer Reviewe
Implementing mobile applications with the MIPAMS content management platform
New mobile devices (pda’s, tablets) permit the implementation of new business models as they are always connected and provide multimedia capabilities for capturing images, videos, music or even conversations. Together with an architecture for the secure management and distribution of multimedia content called MIPAMS, we propose a mobile business model with the implementation of a mobile application based on iOS (Apple operating system for mobile devices) for publishing added value content captured with a mobile device.Peer Reviewe
Access control issues in social networks
Social Networks, as the main axis of Web 2.0, are creating a number
of interesting challenges to the research and standardisation communities. In
this paper, we analyse the current and future use of access control policies in
Social Networks. Subsequently, two main issues are addressed: the
interoperability amongst systems using different policy languages and the lack
of elements in the existing policy languages when trying to express Social
Networks’ access control. In particular, our approach is based on the use of the
XACML standard