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Circuits and Systems for Video Technology, IEEE Transactions on

Issue 6 • Date June 2001

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Displaying Results 1 - 12 of 12
  • Introduction to the special issue on MPEG-7

    Page(s): 685 - 687
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    Freely Available from IEEE
  • MPEG-7 visual shape descriptors

    Page(s): 716 - 719
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    This paper describes techniques and tools for shape representation and matching, developed in the context of MPEG-7 standardization. The application domains for each descriptor are considered, and the contour-based shape descriptor is presented in some detail. Example applications are also shown View full abstract»

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  • MPEG-7 visual motion descriptors

    Page(s): 720 - 724
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    This paper describes tools and techniques for representing motion information in the context of MPEG-7 standardization for multimedia description interfaces. It first gives an overview of the current organization of the set of MPEG-7 motion descriptions, then illustrates this by presenting two of them, motion activity and motion trajectory, in more detail. It explains how to extract them from the content, how to express them in a compact way, and illustrates their use in concrete applications scenarios View full abstract»

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  • An overview of the MPEG-7 description definition language (DDL)

    Page(s): 765 - 772
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    This paper presents an overview of the MPEG-7 description definition language (DDL). The DDL provides the syntactic rules for creating, combining, extending and refining MPEG-7 descriptors (Ds) and description schemes (DSs). In the interests of interoperability, the W3C's XML Schema language, with the addition of certain MPEG-7-specific extensions, has been chosen as the DDL. This paper describes the background to this decision and using examples, provides an overview of the core XML Schema features used within MPEG-7 and the extensions made in order to satisfy the MPEG-7 DDL requirements View full abstract»

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  • Overview of the MPEG-7 standard

    Page(s): 688 - 695
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    MPEG-7, formally known as the Multimedia Content Description Interface, includes standardized tools (descriptors, description schemes, and language) enabling structural, detailed descriptions of audio-visual information at different granularity levels (region, image, video segment, collection) and in different areas (content description, management, organization, navigation, and user interaction). It aims to support and facilitate a wide range of applications, such as media portals, content broadcasting, and ubiquitous multimedia. We present a high-level overview of the MPEG-7 standard. We first discuss the scope, basic terminology, and potential applications. Next, we discuss the constituent components. Then, we compare the relationship with other standards to highlight its capabilities View full abstract»

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  • MPEG-7 multimedia description schemes

    Page(s): 748 - 759
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    MPEG-7 multimedia description schemes (MDSs) are metadata structures for describing and annotating audio-visual (AV) content. The description schemes (DSs) provide a standardized way of describing in XML the important concepts related to AV content description and content management in order to facilitate searching, indexing, filtering, and access. The DSs are defined using the MPEG-7 description definition language, which is based on the XML Schema language, and are instantiated as documents or streams. The resulting descriptions can be expressed in a textual form (i.e., human readable XML for editing, searching, filtering) or compressed binary form (i.e., for storage or transmission). In this paper, we provide an overview of the MPEG-7 MDSs and describe their targeted functionality and use in multimedia applications View full abstract»

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  • Overview of MPEG-7 audio

    Page(s): 725 - 729
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    MPEG-7 is a new ISO standard that facilitates searching for media content much as current text-based search engines ease retrieval of HTML content. This paper gives an overview of the MPEG-7 audio standard, in terms of the applications it might support, its structure, the process by which it was developed, and its specific descriptors and description schemes View full abstract»

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  • Color and texture descriptors

    Page(s): 703 - 715
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    This paper presents an overview of color and texture descriptors that have been approved for the Final Committee Draft of the MPEG-7 standard. The color and texture descriptors that are described in this paper have undergone extensive evaluation and development during the past two years. Evaluation criteria include effectiveness of the descriptors in similarity retrieval, as well as extraction, storage, and representation complexities. The color descriptors in the standard include a histogram descriptor that is coded using the Haar transform, a color structure histogram, a dominant color descriptor, and a color layout descriptor. The three texture descriptors include one that characterizes homogeneous texture regions and another that represents the local edge distribution. A compact descriptor that facilitates texture browsing is also defined. Each of the descriptors is explained in detail by their semantics, extraction and usage. The effectiveness is documented by experimental results View full abstract»

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  • The MPEG-7 visual standard for content description-an overview

    Page(s): 696 - 702
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    The MPEG-7 visual standard under development specifies content-based descriptors that allow users or agents (or search engines) to measure similarity in images or video based on visual criteria, and can be used to efficiently identify, filter, or browse images or video based on visual content. More specifically, MPEG-7 specifies color, texture, object shape, global motion, or object motion features for this purpose. This paper outlines the aim, methodologies, and broad details of the MPEG-7 standard development for visual content description View full abstract»

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  • MPEG-7 sound-recognition tools

    Page(s): 737 - 747
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    The MPEG-7 sound-recognition descriptors and description schemes consist of tools for indexing audio media using probabilistic sound models. The descriptors provide containers for category labels, as well as data structures for quantitative information about sound content. We describe the normative tools, as well as informative methods, for automatic description extraction and sound matching View full abstract»

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  • MPEG-7 Systems: overview

    Page(s): 760 - 764
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    This paper gives an overview of Part 1 of ISO/IEC 15939 (MPEG-7 Systems). It first presents the objectives of the MPEG-7 Systems activity. In the MPEG-1 and MPEG-2 standards, “Systems” referred only to overall architecture, multiplexing, and synchronization. In MPEG-4, in addition to these issues, the Systems part encompasses interactive scene description, content description, and programmability, MPEG-7 brings new challenges to the Systems expertise, such as languages for description representation, binary representation of descriptions, and delivery of descriptions either separate or jointly with the audio-visual content. The paper then presents the description of the MPEG-7 Systems specification, starting from the general architecture up to the description of the individual MPEG-7 Systems tools. Finally, a conclusion describes the status of the standardization effort, as well as future extensions of the specification View full abstract»

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  • SpokenContent representation in MPEG-7

    Page(s): 730 - 736
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    The words spoken in an audio-visual document form an obvious and intuitive metadata component. This component is essential to ensure comprehensive coverage of audio-visual content by the MPEG-7 standard. With manual transcription prohibitively costly, such metadata will typically be derived from automatic speech recognition systems. The errors inherent in the output of such extraction tools cause particular difficulties for robust retrieval, as well as for interoperability in heterogeneous databases. We describe a structure comprising a probabilistic combined word and phone lattice along with an explanatory metadata header and detail how this structure avoids or ameliorates these problems View full abstract»

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Aims & Scope

The emphasis is focused on, but not limited to:
1. Video A/D and D/ A
2. Video Compression Techniques and Signal Processing
3. Multi-Dimensional Filters and Transforms
4. High Speed Real-Tune Circuits
5. Multi-Processors Systems—Hardware and Software
6. VLSI Architecture and Implementation for Video Technology 

 

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Dan Schonfeld
Multimedia Communications Laboratory
ECE Dept. (M/C 154)
University of Illinois at Chicago (UIC)
Chicago, IL 60607-7053
tcsvt-eic@tcad.polito.it

Managing Editor
Jaqueline Zelkowitz
tcsvt@tcad.polito.it