IDMS 2002: Protocols and Systems for Interactive Distributed Multimedia pp 92-105 | Cite as
A Fast QoS Adaptation Algorithm for MPEG-4 Multimedia Applications
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Abstract
This paper addresses the QoS adaptation problem in MPEG-4 multimedia applications. This adaptation involves solving a NP-hard optimisation problem, for which an optimal solution is not feasible in real-time. In the paper, we will formulate the problem and present an approximation algorithm called FAQoS to solve the problem in polynomial time by using a number of heuristics. We will show that FAQoS is as fast as the fastest known algorithm in literature (AMRMD [8]) and has a much higher accuracy than AMRMD, especially when the relative importance of objects is considered. Experiments show that solutions found by FAQoS are most of the time as close as 97% of the optimal solution. FAQoS is therefore suitable for use in real-time QoS adaptation in MPEG-4 applications, especially when the number of objects and the number of quality levels for each object are large.
Keywords
Quality Level Scalable Video Code Resource Cost Resource Type Benefit Function
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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