We show 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. We focus on sources which can be modeled as independently compressed frames, where each element of each frame can be transmitted in one or both of two transmission slots. An optimization algorithm determines the level of protection for each element in each slot, subject to transmission bandwidth constraints. To balance the protection assigned to elements being transmitted for the first time with those being retransmitted, the proposed algorithm formulates a collection of hypotheses concerning its own behaviour in future transmission slots. Experimental results are reported using both IID and GE channel models, with a Motion JPEG2000 video source, demonstrating substantial performance benefits from the proposed framework.
|Title of host publication||2004 International Conference on Image Processing, ICIP 2004|
|Number of pages||4|
|Publication status||Published - 2004|
|Event||2004 International Conference on Image Processing, ICIP 2004 - , Singapore|
Duration: 18 Oct 2004 → 21 Oct 2004
|Other||2004 International Conference on Image Processing, ICIP 2004|
|Period||18/10/04 → 21/10/04|