TL;DR: This study empirically investigated people's real interest in mobile television by interviewing a large population and by building and trialling a prototype system that combines several types of wireless networks in a 4G fashion.
Abstract: Watching television from a wireless pocket-sized terminal or phone is interesting in many situations. Public and private transportation vehicles and public places are potential environments for mobile television services. Even in homes, mobile television handsets are interesting, both as a personal television set and as a tool to establish a closer interaction with the television programs. In addition to these possibilities for enriching viewer experience, mobile television offers the broadcaster new audiences, the teleoperators a new distribution channel and the equipment manufacturer new receiver product possibilities. In fact, television is the only major media missing from today ́s mobile phones. In this study we empirically investigated people ́s real interest in mobile television by interviewing a large population and by building and trialling a prototype system. The system combines several types of wireless networks in a 4G fashion. It takes digital terrestrial television broadcasts from the air and delivers them over the Internet to mobile terminals in hot-spot areas covered by Wireless Local Area Networks (WLAN). Content is also delivered over the GPRS cellular network. Two types of terminals are used – a pocket-sized PDA and an A5-sized tablet PC. The digital television signal is transcoded down to a bit rate suiting these terminals. In the field trial the user could watch almost the complete program content of the three leading Finnish TV channels. The user could also access all programs transmitted during the previous week from the media server (TV-Anytime feature). Ordinary families, leisure users, workers and students participated in the trial. Each user tried the service at WLAN hot-spots during one month. The users clearly considered the service to be television, not wireless multimedia. This underlines that new services should be rooted in known user interfaces. The most liked feature was the ability to watch programs from the archive whenever the individual wanted. Typically, the user surfed through the program lists and
TL;DR: The authors examine the challenges of creating and deploying multimedia metadata standards and possible directions exist for improving the standards efforts to better address the growing problems of managing multimedia data.
Abstract: In this article, the authors examine the challenges of creating and deploying multimedia metadata standards. They also review several of the significant standardization efforts to date and look at prospects for integrated use and broader adoption. Possible directions exist for improving the standards efforts to better address the growing problems of managing multimedia data.
TL;DR: The methodology and mechanisms presented here open up opportunities for reusing ontology tools and ontologies across a large number of applications (with or without audiovisual content) and across different professional and user communities.
Abstract: We describe a systematic methodology for extending the audiovisual content description standards (MPEG-7 and TV-Anytime) with domain-specific knowledge descriptions expressed in OWL. The domain-specific descriptions of the audiovisual content metadata are completely transparent to applications and tools that use MPEG-7 and TV-Anytime, allowing them to use the domain- specific ontologies without any software changes. We also present an interoperability mechanism between OWL and the audiovisual content description standards, which allows MPEG-7 and TV-Anytime descriptions and their domain-specific extensions to be described in OWL and vice versa. Thus, the methodology and the mechanisms presented here open up opportunities for reusing ontology tools and ontologies across a large number of applications (with or without audiovisual content) and across different professional and user communities. We present the details of the methodology and the implementation of the tools supporting it as well as its integration in a large framework for domain-specific indexing and retrieval of audiovisual content.
TL;DR: The methodology developed opens up a wide opportunity for the creation of MPEG-7 and TV-Anytime services offering structured domain-specific ontologies that can be integrated to these standards for enhancing audiovisual content retrieval performance.
Abstract: In this paper, we describe a framework that we have developed for the support of ontology-based semantic indexing and retrieval of audiovisual content following the MPEG-7 and TV-Anytime standard specifications for metadata descriptions Our work aims to provide a methodology to enhance the retrieval effectiveness of audiovisual content, while maintaining compatibility with the international multimedia standards
In our framework, domain-specific ontologies guide the definition of both the application-specific metadata and the instance-description metadata that describe the contents of audiovisual programs and/or their segments The ontologies are also used in order to provide compatible descriptions in both audiovisual content standards (MPEG-7 and TV-Anytime) for the same content This approach allows indexing compatibility and interoperability of TV-Anytime and digital library applications
We describe the design and implementation of a system supporting this framework The components of the system include a segmentation tool for segmenting audiovisual information, which also provides ontology-based semantic indexing capabilities, and an appropriate API for semantic query support An application testbed for the domain of soccer games has been developed on top of this system An ontology for soccer games has been defined and used for indexing and retrieval of soccer games that have been stored in the system database
The methodology we developed opens up a wide opportunity for the creation of MPEG-7 and TV-Anytime services offering structured domain-specific ontologies that can be integrated to these standards for enhancing audiovisual content retrieval performance
TL;DR: An approach to content recommendation for groups of people, based on TV-Anytime descriptions of TV contents and semantic reasoning techniques is presented.
Abstract: The advent of Digital TV and Personal Digital Recorders promise to change the way people watch TV. The higher efficiency of digital coding will lead to increasing the number of contents offered to the user, demanding automatic tools for content recommendation. In the other hand, digital recorders will permit a non-linear consumption model, enabling the creation of (automatic) personalized schedules that combine the appealing contents for a specific user or group of users. This paper presents an approach to content recommendation for groups of people, based on TV-Anytime descriptions of TV contents and semantic reasoning techniques.