Efficient Video Transport over Lossy Networks

Kuhmünch, Christoph ; Kühne, Gerald

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URL: https://ub-madoc.bib.uni-mannheim.de/780
URN: urn:nbn:de:bsz:180-madoc-7800
Document Type: Working paper
Year of publication: 1998
The title of a journal, publication series: Technical Reports
Volume: 98-007
Place of publication: Mannheim
Publication language: English
Institution: School of Business Informatics and Mathematics > Sonstige - Fakultät für Wirtschaftsinformatik und Wirtschaftsmathematik
MADOC publication series: Veröffentlichungen der Fakultät für Mathematik und Informatik > Institut für Informatik > Technical Reports
Subject: 004 Computer science, internet
Subject headings (SWD): Bildsignal , Datenkompression , Transportprotokoll
Keywords (English): video compression standards , hierarchical encoding , real-time transmission
Abstract: Nowadays, packet video is an important application of the Internet. Unfortunately the capacity of the Internet is still very heterogeneous because it connects high bandwidth ATM networks as well as low bandwidth ISDN dial in lines. The MPEG-2 and MPEG-4 video compression standards provide efficient video encoding for high and low bandwidth media streams. In particular they include two paradigms which make those standards suitable for the transmission of video via heterogeneous networks. Both support layered video streams and MPEG-4 additionally allows the independent coding of video objects. In this paper we discuss those two paradigms, give an overview of the MPEG video compression standards and describe transport protocols for Real Time Media transport over lossy networks. Furthermore, we propose a real-time segmentation approach for extracting video objects in teleteaching scenarios.

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