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Proceedings Paper

Techniques for resilient transmission of JPEG video streams
Author(s): Edward J. Posnak; S. P. Gallindo; A. P. Stephens; Harrick M. Vin
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Paper Abstract

In this paper, we develop a transmission system, referred to as Dual Stream JPEG (DSJ), that improves the resiliency of JPEG video streams by unifying layered encoding with image scrambling techniques. Whereas layered encoding techniques naturally provide resiliency to isolated loss of low priority image data, scrambling techniques make is possible to distribute burst losses throughout the image. In DSJ, this unification is instantiated by employing the discrete cosine transform (DCT) to convert each 8 X 8 pixel block of an image into frequency domain, partitioning the resultant locks into high-priority DC coefficients and low-priority AC coefficients, and the scrambling the transmission of encoded blocks of AC coefficients. Furthermore, DSJ defines an adaptation layer that implements efficient error detection and recovery by including the sequence number and offset (relative to the beginning of the cell payload) of blocks carried in each cell. We have evaluated the performance of DSJ through extensive simulations. We present and analyze our results.

Paper Details

Date Published: 14 March 1995
PDF: 10 pages
Proc. SPIE 2417, Multimedia Computing and Networking 1995, (14 March 1995); doi: 10.1117/12.206051
Show Author Affiliations
Edward J. Posnak, Univ. of Texas/Austin (United States)
S. P. Gallindo, Univ. of Texas/Austin (United States)
A. P. Stephens, Univ. of Texas/Austin (United States)
Harrick M. Vin, Univ. of Texas/Austin (United States)

Published in SPIE Proceedings Vol. 2417:
Multimedia Computing and Networking 1995
Arturo A. Rodriguez; Jacek Maitan, Editor(s)

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