Mr. Dong Wang Profile

Dong Wang

Engineer at TANDBERG

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Proceedings Article | 19 January 2006 Paper

Space-time multiple description video coding

Dong Wang, Nishan Canagarajah, Dave Bull

Proceedings Volume 6077, 60770E (2006) https://doi.org/10.1117/12.643132

KEYWORDS: Video, Video coding, Error analysis, Computer programming, Seaborgium, Video compression, Image compression, Transform theory, Roads, Quantization

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This paper develops a combined space-time multiple description video coding (ST-MDVC) scheme and corresponding error concealment methods in order to adapt to error prone packet networks, especially for multiple channels. It generates four descriptions, instead of two in most other MDVC schemes, with much lower redundancy than others. The three-loop slice group MDVC approach of [8] is used to achieve spatial description splitting. MDVC is very suitable for multiple channel environments, and especially able to maintain acceptable quality when some of these channels fail completely, i.e. in an on-off MDC environment, without experiencing any drifting problem. Our MDC scheme coupled with the proposed concealment approaches proved to be suitable not only for the on-off MDC environment case (data from one channel fully lost), but also for the case where only some packets are lost from one or more channels. Several steps to achieve high performance concealments are done with the received packets. Results show the promising performance with very low redundancy for both the balanced and unbalanced channel cases. Generating four descriptions make it more adapted to multi-path scenarios.

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