Semantic annotation and retrieval of documentary media objects

Abstract

Access to this document was granted through an Emerald subscription provided by emerald-srm: 412925 [] For AuthorsIf you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. AbstractPurpose -This paper aims to propose a system for the semantic annotation of audio-visual media objects, which are provided in the documentary domain. It presents the system's architecture, a manual annotation tool, an authoring tool and a search engine for the documentary experts. The paper discusses the merits of a proposed approach of evolving semantic network as the basis for the audio-visual content description. Design/methodology/approach -The author demonstrates how documentary media can be semantically annotated, and how this information can be used for the retrieval of the documentary media objects. Furthermore, the paper outlines the underlying XML schema-based content description structures of the proposed system. Findings -Currently, a flexible organization of documentary media content description and the related media data is required. Such an organization requires the adaptable construction in the form of a semantic network. The proposed approach provides semantic structures with the capability to change and grow, allowing an ongoing task-specific process of inspection and interpretation of source material. The approach also provides technical memory structures (i.e. information nodes), which represent the size, duration, and technical format of the physical audio-visual material of any media type, such as audio, video and 3D animation. Originality/value -The proposed approach (architecture) is generic and facilitates the dynamic use of audio-visual material using links, enabling the connection from multi-layered information nodes to data on a temporal, spatial and spatial-temporal level. It enables the semantic connection between information nodes using typed relations, thus structuring the information space on a semantic as well as syntactic level. Since the description of media content holds constant for the associated time interval, the proposed system can handle multiple content descriptions for the same media unit and also handle gaps. The results of this research will be valuable not only for documentary experts but for anyone with a need to ...

Adding and Segmenting Educational Videos: Experiences of Teacher Users in an Educational Portal

“…Subsequently, MPEG-7 services convert the XML of the content of the video mapping and annotated segments into RDF ( Figure 5). This conversion considers the Rhizomik MPEG-7 to RDF mechanism presented by Kanellopoulos et al [30].…”

“…The analysis of the results obtained showed that for AvaOne users, the participants of this study, both ''Student'' profile and ''Teacher'' profile the embedding of metadata into educational videos through related descriptors facilitates and defines the search and access to specific contents in these videos, according to the interest of the users of this portal, which validates the hypothesis of this study, that brings as contributions a real, scalable, flexible solution, and allows the reuse of segments of educational videos at the architectural or semantic level. This evaluation made it possible to validate the adequacy of concepts, technologies and methodologies presented in literature [6], [25], [26], [28], [30], [36], [37], in the construction of an educational semantic portal prototype that enables the embedding of metadata into educational videos.…”

Multimedia networking issues for digital video libraries

“…For example, research efforts based on the MPEG-7 standard (MPEG-7, 2004) allow enriching media content with semantic content annotations, which in turn facilitate new forms of multimedia experience such as semantic-based content selection and filtering. Unfortunately, only a few projects have exploited the extended metadata annotation possibilities available with the new MPEG standards (Martinez et al, 2002;Kanellopoulos, 2012).…”

Recuperação de Recursos Audiovisuais em Portais Educacionais por meio da Adição de Metadados Semânticos

“…Para a adição de semântica aos conteúdos da Web tem-se utilizado tecnologias desenvolvidas para dar significado e promover a interação entre diversos sistemas (KANELLOPOULOS, 2012). Os portais web tradicionais auxiliavam a permuta de conteúdos entre grupos de pessoas e se fizeram populares.…”

“…Estudos como Alan et al (2008); Sebastine; Thuraisingham e Prabhakaran (2010); Kanellopoulos (2012); Lachtim (2008); Silva e Gluz (2012); Patrocinio e Ishitani (2009) mostram que, de forma análoga ao modelo da programação orientada a objetos, objetos de aprendizagem com anotação semântica apropriada podem ser armazenados em repositórios de forma a serem reutilizados e referenciados no contexto educacional. Neste estudo, toma-se como pressuposto que os recursos audiovisuais são instrumentos de amplas possibilidades de utilização em diferentes áreas, dentre as quais a educação.…”