Optimal erasure protection for scalably compressed video streams with limited retransmission

David Taubman*, Johnson Thie

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    20 Citations (Scopus)
    33 Downloads (Pure)


    This paper shows how the priority encoding transmission (PET) framework may be leveraged to exploit both unequal error protection and limited retransmission for RD-optimized delivery of streaming media. Previous work on scalable media protection with PET has largely ignored the possibility of retransmission. Conversely, the PET framework has not been harnessed by the substantial body of previous work on RD optimized hybrid forward error correction/automatic repeat request schemes. We limit our attention to sources which can be modeled as independently compressed frames (e.g., video frames), where each element in the scalable representation of each frame can be transmitted in one or both of two transmission slots. An optimization algorithm determines the level of protection which should be assigned to each element in each slot, subject to transmission bandwidth constraints. To balance the protection assigned to elements which are being transmitted for the first rime with those which are being retransmitted, the proposed algorithm formulates a collection of hypotheses concerning its own behavior in future transmission slots. We show how the PET framework allows for a decoupled optimization algorithm with only modest complexity. Experimental results obtained with Motion JPEG2000 compressed video demonstrate that substantial performance benefits can be obtained using the proposed framework.

    Original languageEnglish
    Pages (from-to)1006-1019
    Number of pages14
    JournalIEEE Transactions on Image Processing
    Issue number8
    Publication statusPublished - Aug 2005

    Bibliographical note

    Copyright 2005 IEEE. Reprinted from IEEE transactions on image processing, Volume 14, Issue 8, 1006-1019. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Macquarie University’s products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.


    • Error protection
    • Hybrid-ARQ
    • Limited retransmission priority encoding transmission (LR-PET)
    • PET
    • Retransmission
    • Robust transmission
    • Scalable video


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