Digital documents assembled of different components like text, images, video, audio and 3 0 models are supported today by many distributed applications. This paper presents a new approach to retrieve 3 0 models aspart of digital documents using content-based image retrieval functionality. To find a 3 0 model best-jitting the user's query, shape information is extracted from the retrieved models and a score is generated by comparing shape images with the graphical user input. A distributed database environment with a WWW interface is presented and used as a generic implementation platform for this technique. The new retrieval method for 3 0 geometry is then described by extending the generic architecture in two steps with a server-side module and an interactive client display. It is outlined how this method can be used for partial geometry download of 3 0 models in digital libraries.The information accessible through the WWW is increasing in its amount and heterogeneity. Distributed digital documents can contain all types of data like text, images, video, audio or 3D geometry. Content presented in the form of digital documents is more and more stored dynamically in databases. Therefore users, who want to work with content of distributed databases in the Web, need methods for retrieval and visualization which support the special requirements of distributed environments and heterogeneous content. The ability to use content-based retrieval techniques for complex data like 3D geometry or images is important, if the information provided by metadata is not sufficient or the production of additional metadata is to expensive or not possible at all. Critical problems, which have to be solved, are to speed-up the retrieval process, to improve the quality of search results using relevance feedback given by the user and to reduce the amount of transmitted data needed for the retrieval process [ 11. To meet these requirements built-in database functionality for content-based retrieval on the server side in connection with an interactive visual client tool can be used for work with distributed digital documents. The possibility to built an index over the signatures generated by a content-based retrieval system for database contents allows to speed-up the retrieval in large collections by using a table look-up technique instead of a search over the entire database. Using interactive remote visualization of the retrieval results on the server enables the user to restrict the search space by giving a relevance feedback. Model segmentation and extraction of visual shape information provide the user with a method to select parts of 3D models for download which helps to reduce the amount of transmitted data, especially when the 3D data are complex. IntroductionCollections of heterogeneous digital documents with 3D geometric content are used today in a variety of applications like medical support systems, product design tools, systems for computer supported cooperation or distributed information systems like digital libraries. To work...

In this paper, we report recent research activities under the integrated project, Live Staging of Media Events (LIVE), which is funded under European Framework-6 programme, and illustrate how a new LIVE TV broadcasting and content production concept can be introduced to improve the existing TV broadcasting services. In comparison with existing TV content production technologies, we show case that LIVE TV broadcasting format could achieve a range of significant advantages, which can be highlighted as: (i) real-time interaction between TV content production team and viewers to ensure the best possible entertainment experiences and to allow viewers not only to view but also to participate, to influence and to control; (ii) the traditional concept of TV content director can be changed to a TV content conductor, where live TV broadcasting can be conducted on real-time bases and existing content materials can be conducted into multi-streams of TV broadcasting, providing variety of choices to allow the audience to make their own preferences in watching TV programmes; (iii) introduction of significant intelligence in terms of content analysis and behaviour analysis etc. to further improve the quality of services based on the fundamental concept of LIVE project. When tested under field trials for 2008 Olympic Games by ORF, the developed LIVE system has illustrated great potential as well as significant promises to improve the TV broadcasting services not only in terms of the interaction formats, but also in terms of viewing experiences as well as the style of content productions and preparations Index Terms-Interactive TV, Intelligent TV, and semantics-based video processing.

Event recognition systems have high potential to support crisis management and emergency response. For large-scale scenarios, however, the sheer amount of possible audio and video channels requires adequate processing of the material by automatic means. In this article, the authors focus on automatic audio and video event recognition, by means of detecting abnormalities both in train noise as well as surveillance videos, and by conducting automatic speech recognition on fire fighter communication. All components are integrated in an overall intelligent resource management system. The authors elaborate on the challenges expected from real life data and the solutions that the authors applied. The overall system, based on Event-Driven Service-Oriented Architecture, has been implemented and partly integrated into the end users' infrastructures. The system has been continuously running for more than two years, collecting data for research purposes.

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