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Polishing: A Technique to Reduce Variations in Cached Layer-Encoded Video

Research output: Contribution in Book/Report/ProceedingsConference contribution


Publication date2003
Host publicationEUROMICRO '03: Proceedings of the 29th Conference on EUROMICRO
Place of publicationWashington, DC, USA
PublisherIEEE Computer Society
Number of pages6
ISBN (Print)0-7695-1996-2
Original languageEnglish


We introduce a technique called polishing to reduce variations in cached layer-encoded video by identifying those segments which can be removed without diminishing the perceptual quality. In fact, polishing even allows to increase the perceptual quality of a layer-encoded video. This can be used for perceptual quality improved playout from a cache towards a client as well as for perceptual quality aware cache replacement decisions. We devise an optimal scheme to polish layer-encoded videos but show that a simple heuristic achieves similar performance in simulations. By means of simulations we furthermore show how polishing can improve the quality of the cached content.