Search (26 results, page 1 of 2)

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Date

22. 2.1996 11:37:48

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Date

22. 9.1997 19:16:05

Source

Digital image access and retrieval: Proceedings of the 1996 Clinic on Library Applications of Data Processing, 24-26 Mar 1996. Ed.: P.B. Heidorn u. B. Sandore

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Abstract

Discusses models for storing and presenting multimedia documents integrating large amounts of data of different types. Multimedia systems integrate a variety of data such as voice, graphics, text, video and other types of images into a single document. Most of these data are not structured and therefore require a huge storage capacity. Such a requirement causes many problems for traditional database management systems which were not originally designed to manipulate data other than text. Presents 2 data storage models and several other associated models for the presentation of multimedia documents. The analysis of these models reveals their capacity to synchronize various temporal scenarios while allowing users simultaneous and secure access to multimedia systems

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Abstract

Multimedia art catalogues present a number of recurring characteristics in both the type of data and the users involved, and in the type of operations required. Typical data include textual catalogue cards manageable through an information retrieval system (IRS), as well as textual captions, images, video and speech, strutured as a hypermedia network. Proposes a model for the design of these applications and discusses its effectiveness in improving the quality of the application. The model exploits a multi-level design approach to organize data and access structures of the IRS while the entity-relationship (E-R) approach, tailored to model hypermedia applications, is adopted to describe the structure of the documents and their links

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Abstract

Integrated multimedia systems process text, graphics, and other discrete media as well as digital audio, and video data. Considerable amounts of graphics, audio and video data in their uncompressed form, especially moving pictures, require storage and digital network capabilities that will not be available in the near future. Nevertheless, local, as well as networked, multimedia applications and systems have become realities. In order to cope with these storage and communication requirements in such integrated multimedia systems, compression technology is essential. This paper starts with a brief motivation of the need for compression and subsequently states the essential requirements for these techniques in the scope of multimedia systems and applications. As most of these techniques apply the same principles, namely, the source, entropy, and hybrid coding fundamentals, these are explained in detail. Based on a general framework of the steps encountered in a compression system - data preparation, processing, quantization, and entropy coding - this paper outlines details about the techniques developed by CCITT (H.261, i.e. px64), in the ISO/IEC (JPEG, MPEG) stadardization bodies and the proprietary DVI system

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Abstract

Film, videotape and multimedia archive systems must address the issues of editing, authoring and searching at the media (i.e. tape) or sub media (i.e. scene) level in addition to the traditional inventory management capabilities associated with the physical media. This paper describes a prototype of a database design for the storage, search and retrieval of multimedia and its related information. It also provides a process by which legacy data can be imported to this schema. The Continuous Media Index, or Comix system is the name of the prototype. An implementation of such a digital library solution incorporates multimedia objects, hierarchical relationships and timecode in addition to traditional attribute data. Present video and multimedia archive systems are easily migrated to this architecture. Comix was implemented for a videotape archiving system. It was written for, and implemented using IBM Digital Library version 1.0. A derivative of Comix is currently in development for customer specific applications. Principles of the Comix design as well as the importation methods are not specific to the underlying systems used.

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Abstract

Discusses the problems and opportunities promised by multimedia CD-ROM data bases from the viewpoint of libraries and information centres. Considers the problems of planning for multimedia and coping with the host of standards that exist.

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Abstract

Explains how Internet video and audio broadcasting is overcoming the technical obstacles of narrow bandwidth of telephone lines, the limits of compressing multimedia data, and problems that packet switching transmission cause for audio transmissions. Decribes some current applications and future possibilities

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Abstract

Although database technology is well established, multimedia storage and access of digital image, sound and video material is much more recent. Although most film and video material is intrinsically multimedia it is not interactive. Unlike traditional data, multimedia has a very free format and has mostly lost the constraint of human language. The problems of interactive multimedia publications arise not just in user access but from the internal structuring of the database. Discusses topics related to methods of access to data and the design approaches to this covering multimedia material, database technology, indexing and referencing techniques and design and production

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Abstract

News is information about recent events of general interest, especially as currently reportes by newspapers, periodicals, radio or television. News is the quintessential multimedia data. While newspaper editors (human and/or algorithmic) may still define the core content of electronic news, new communication technologies will enable the integration of news from a wide variety of sources and provide access to supplemental material from enormous archives of electronic news data (text, photos, and video) in digital libraries as well as the continual streams of newly created data. The goal of electronic news delivery within this context is, however, distiguishable from both news news groups and document retrieval. Electronic news promises to deliver to the reader an edited collage of recent events from wide domains in a manner that is both comprehensive and personalized. As part of a long-term research project into the design of future news delivery systems, we have developed an overall architecture and several prototypes. These prototypes are presented in the article, along with a discussion of issues related to the presentation metaphor and to the functionality of electronic news delivery services. A prototype was demonstrated at the 1995 G-7 Economic Summit in Halifax, Canada, integrating newspaper text and photographs with television news video clips across an ATM network

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Abstract

Discusses an architecture for knowledge-based hypermedia systems based on work from semantic databases. Its power derives from its use of a single, uniform data structure which can be used to store both the intensional and extensional information needed to generate hypermedia systems. The architecture is also sufficiently powerful to accomodate the representation of reasonable amount of knowledge within a hypermedia system. Work has been conducted in building a number of prototypes on a small information base of digital image data. The prototypes serve as demonstrators of systems for managing the large amount of information held by museums of their artifacts. The aim of this work is to demonstrate the flexibility of the architecture in sereving the needs of a number of distinct user groups. The first prototype has demonstrated that the virtual architecture is capable of supporting some of the main hypermedia access methods. The current demonstrator is being used to investigate the potential of the approach for handling multiple classifications of hypermedia material. The research is particularly directed at the incorporation of evolving temporal and spatial knowledge

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Abstract

The 15 contributions selected for this volume treat topics of particular interest in current research and address actual problems of the use of multimedia in distributed applications over the network. Concepts for handling multimedia data, still and motion pictures on the net, WWW and multimedia, collaborative multimedia, and multimedia and education are dealt with

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Abstract

Reviews TFPL's The Multimedia Yearbook and CD-ROM Directory on CD-ROM, a combination of 2 printed directories, the Multimedia Yearbook and the CD-ROM Directory. Information is provided on companies involved in the multimedia and CD-ROM business and on commercial CD-ROM titles available worldwide with supporting details such as publishers' addresses. The easy to use combination of title and industry data makes this disc likely to become the standard reference source on CD-ROMm especially in the UK

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Abstract

Summarizes recent reports forecasting about trends in the multimedia market. Tinsley Robor plc, UK, forecasts continued growth and increasing CD-online hybridisation. Frost & Sullivan, UK, forecasts expansion in the CD and optical disk drive markets which are characterised by increasing capacity and performance. The Internet will be increasingly significant as a way of distributing data

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Date

31.12.1998 22:05:21

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Abstract

Develops an integrated conceptual representation scheme for multimedia documents that are viewed to comprise an object-oriented database. Develops the necessary abstractions for the conceptual model and extensions to the RM/T relational model used as the search structure. Develops a retrieval model in which the database search space is 1st narrowed down, based on user query, by an associative search. The associative search is followed by semantic and media-specific searches. A query langugae called SQLX is introduced to fomulate these searches directly from the conceptual model. In SQLX, connector attributes replace join, and abstract data type enables use of objects and their methods in query formulation. Describes a temporal model for time-dependent presentations and with the directions for future work

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Abstract

Describes a hypermedia application that provides students reading German texts with advance organizers in the form of a movie clip designed to facilitate global comprehension and glosses for words in the form of text, graphics, video, and sound. Results of testing indicate that studuents not only reported the photograph and movie links as most helpful for learning vocabulary, but in fact chose them more than text. Performance on vocabulary tests showed that when links were accessed, words were recalled correctly approximately 75% of the time. Learner behaviour data showed that so called visualizers and verbalizers performed equally well on the vocabulary tests but accessed different modes of information (links) corresponding to their respective cognitive styles

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Footnote

Part of a special issue featuring papers from the workshop on hypermedia and hypertext standards held in Amsterdam, Netherlands, 22-23 April 1993

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Abstract

Providing access to the ever-expanding world of information to a greater number and variety of individuals reminds one of the zeal that fostered the first publicly funded education system. It is clear that the survival of contemporary culture and technology rests heavily on an 'encyclopedia' of shared values and ideas. Awareness of and participation in this dynamic receptable of shared experience could eliminate certain socioeconomic distinction but may result in other forms of social stratification. While researchers labour over 'information visualization' as a means of filtering extremely complex quantitative relationships among data into relatively simple, manipulable graphical entities, a new form of literacy may emerge. With voice and pattern recognition, the multifunctional screen with its audio and visual motion may become a prosthesis allowing a growing population of the non-reading and video-oriented to initiate sophisticated information quests and become interested in textual interactivity

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Abstract

Reports results of the project C-ODAI, undertaken at University College London, Computer Science Department, the aim of which was to build a demonstration and test bed facility for online access to a large electronic library of multimedia documents. The project was a pilot experiment in the use of a database of compound documents (text and images) in the Open Document Architecture (ODA) format. The database used is part of the contents of the periodicals of the American Chemical Society (ACS). Discusses the overall view of the project and the tools which have been implemented to deal with juke box storage and conversion of different data, and early results of user tests. The project forms part of the ACS/PODA project, funded jointly by the CEC under the ESPRIT PODA-SAX project, and by the British Library Research and Development Department