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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 電機工程學系 > 期刊論文 >  A Standard-Compliant Virtual Meeting System with Active Video Object Tracking


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/12402


    Title: A Standard-Compliant Virtual Meeting System with Active Video Object Tracking
    Authors: Chia-Wen Lin
    Yao-Jen Chang
    Chih-Ming Wang
    Yung-Chang Chen
    Ming-Ting Sun
    教師: 林嘉文
    Date: 2002
    Publisher: Hindawi
    Relation: EURASIP JOURNAL ON APPLIED SIGNAL PROCESSING Volume: 2002 Issue: 6 Pages: 622-634 Published: JUN 2002
    Keywords: video conference
    virtual meeting
    immersive video conference
    networked multimedia
    multipoint control unit
    Abstract: © 2002 European Association for Speech Signal and Image Processing-This paper presents an H.323 standard compliant virtual video conferencing system. The proposed system not only serves as a multipoint control unit (MCU) for multipoint connection but also provides a gateway function between the H.323 LAN (local-area network) and the H.324 WAN (wide-area network) users. The proposed virtual video conferencing system provides user-friendly object compositing and manipulation features including 2D video object scaling, repositioning, rotation, and dynamic bit-allocation in a 3D virtual environment. A reliable, and accurate scheme based on background image mosaics is proposed for real-time extracting and tracking foreground video objects from the video captured with an active camera. Chroma-key insertion is used to facilitate video objects extraction and manipulation.We have implemented a prototype of the virtual conference system with an integrated graphical user interface to demonstrate the feasibility of the proposed methods.
    Relation Link: http://www.hindawi.com/
    URI: http://nthur.lib.nthu.edu.tw/handle/987654321/12402
    Appears in Collections:[電機工程學系] 期刊論文
    [電腦與通訊科技研發中心] 期刊論文
    [腦科學研究中心] 期刊論文

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