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Proceedings Paper

MPEG-4 simple profile transcoder for low-data-rate wireless applications
Author(s): Jinwha Yang; Edward J. Delp
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Paper Abstract

A synchronization scheme that can specify the start position of each macroblock in a compressed video bitstream for low data rate wireless applications is proposed by extending the Error Resilient Entropy Coding (EREC) method. Our scheme is implemented in the form of a transcoder, placed before and after the channel, of a MPEG-4 Simple Profile bitstream. We compare our proposed technique using reconstructed video quality (measured in PSNR) and the length of the extra redundancy bits incurred by the transcoder with the error resilient tools of H.263+. A simple syntax-based codeword repair method is also proposed so that the transcoder generates a MPEG-4 compliant bitstream which can then be decoded with a standard MPEG-4 decoder such as MoMuSys (FDIS V1.0).

Paper Details

Date Published: 4 January 2002
PDF: 12 pages
Proc. SPIE 4671, Visual Communications and Image Processing 2002, (4 January 2002); doi: 10.1117/12.453046
Show Author Affiliations
Jinwha Yang, Purdue Univ. (United States)
Edward J. Delp, Purdue Univ. (United States)

Published in SPIE Proceedings Vol. 4671:
Visual Communications and Image Processing 2002
C.-C. Jay Kuo, Editor(s)

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