QoS control strategies for high-quality video processing

被引：11

作者：

Wüst, CC ^{[1
]}

Steffens, L ^{[1
]}

Bril, RJ ^{[1
]}

Verhaegh, WFJ ^{[1
]}

机构：

[1] Philips Res Labs, NL-5656 AA Eindhoven, Netherlands

来源：

16TH EUROMICRO CONFERENCE ON REAL-TIME SYSTEMS, PROCEEDINGS | 2004年

关键词：

soft real time; overload; multimedia; Quality of Service;

D O I：

10.1109/EMRTS.2004.1310990

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

Video processing in software is often characterized by highly fluctuating, content-dependent processing times, and a limited tolerance for deadline misses. We present an approach that allows close-to-average-case resource allocation to a single video processing task, based on asynchronous, scalable processing, and QoS adaptation. The QoS adaptation balances different QoS parameters that can be tuned by user-perception experiments., picture quality, deadline misses, and quality changes. We model the balancing problem as a discrete stochastic decision problem, and propose two closely related solution strategies, for which the processing-time statistics are determined off line and at run time, respectively We enhance both strategies with a compensation for structural (non-stochastic) load-fluctuations. Finally, we validate our approach by means of simulation experiments, and conclude that both enhanced strategies perform close to the theoretical optimum.

引用

页码：3 / 12

页数：10

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