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Journal ArticleDOI

A multimedia data model

01 Sep 1999-Iete Journal of Research (Taylor & Francis)-Vol. 45, pp 283-291
TL;DR: A data model is presented, which allows the users to compose a multimedia presentation, involving different data types, in an easy and efficient fashion, and a system for browsing and authoring multimedia presentations is developed.
Abstract: In this paper we have presented a data model, which allows the users to compose a multimedia presentation, involving different data types (i.e., video, audio, text, graphics and images) in an easy and efficient fashion. This model provides an efficient mechanism for organizing and manipulating multimedia data by assigning logical representations to the underlying data streams and their contents. This scheme also specifies operations for associative access of the multimedia information. On the basis of this data model we have developed a system for browsing and authoring multimedia presentations. Implementation has been done in Visual C++ under Windows-95 environment.
References
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Journal ArticleDOI
TL;DR: The Dexter hypertext reference model as mentioned in this paper is an attempt to capture, both formally and informally, the important abstractions found in a wide range of existing and future hypertext systems, providing a principled basis for comparing systems as well as for developing interchange and interoperability standards.
Abstract: This paper presents the Dexter hypertext reference model. The Dexter model is an attempt to capture, both formally and informally, the important abstractions found in a wide range of existing and future hypertext systems. The goal of the model is to provide a principled basis for comparing systems as well as for developing interchange and interoperability standards. The model is divided into three layers. The storage layer describes the network of nodes and links that is the essence of hypertext. The runtime layer describes mechanisms supporting the user’s interaction with the hypertext. The within-component layer covers the content and structures within hypertext nodes. The focus of the model is on the storage layer as well as on the mechanisms of anchoring and presentation specification that form the interfaces between the storage layer and the within-component and runtime layers, respectively. The model is formalized in the specification language Z, a specification language based on set theory. The paper briefly discusses the issues involved in comparing the characteristics of existing systems against the model.

1,075 citations

Journal ArticleDOI
TL;DR: This research addresses four areas of content-based video management, including time codes, image frames, pixels, and frames, which are based on pixels rather than perceived content.
Abstract: Video management tools and techniques are based on pixels rather than perceived content. Thus, state-of-the-art video editing systems can easily manipulate such things as time codes and image frames, but they cannot "know," for example, what a basketball is. Our research addresses four areas of content-based video management. >

558 citations

Journal ArticleDOI
TL;DR: The Amsterdam Hypermedia Model (AHM) as discussed by the authors is a general model for hypermedia that includes attention to timing and composite objects as well as implementation issues such as channels and having the sources of components residing over a distributed system.
Abstract: From Computing Reviews, by Jeanine Meyer The purpose of this paper is to convince the reader of the need for a general model for hypermedia and present the Amsterdam hypermedia model (AHM) as fulfilling that need. Hypertext, which is described by the authors as a 'relatively mature discipline,' has the Dexter model, but the authors show that enhancing that model for hypermedia is not a straightforward task. In particular, it requires attention to issues of synchronization. The AHM model includes attention to timing and composite objects as well as implementation issues such as channels and having the sources of components residing over a distributed system. The paper features one example and also describes an authoring and presentation environment called CMIFed. It is generally well written. The paper can be understood even if one has not studied the Dexter hypertext reference model or the CMIF multimedia document model and, in fact, this paper could serve as an introduction to the issues involved. Too much of the focus, however, is on other systems and not on what AHM actually is. The authors do not demonstrate the model by using it to express the featured example. Moreover, to really merit the term 'model,' AHM should be shown as serving a substantial role in describing and implementing applications in terms of two or more distinct authoring or runtime environments. This is not done, though it appears well within the experience and understanding of the authors.

353 citations

Journal ArticleDOI
TL;DR: This interactive multimedia presentation development system uses artificial intelligence to specify knowledge inheritance relations between presentation windows and an object-oriented multimedia database organizes resources and presentations.
Abstract: Our interactive multimedia presentation development system uses artificial intelligence to specify knowledge inheritance relations between presentation windows. An object-oriented multimedia database organizes resources and presentations, and a database browser facilitates object reuse. The system runs under Windows 95 and can be used for general-purpose presentations or for education, training, or product demonstrations.

28 citations