Power-Rate-Distortion Optimized Resource-Scalable Low-Complexity Video Coding in Wireless Multimedia Sensor Networks

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Executive Summary

Wireless Multimedia Sensor Networks (WMSNs) have been potentially applicable for several emerging applications. However, the available resources, i.e., power and rate, of visual sensors in a WMSN are very limited. Hence, it is important but challenging to achieve efficient resource allocation and optimal video compression while maximizing the overall network lifetime. In this paper, a Power-Rate-Distortion (PRD) optimized resource-scalable low-complexity multiview video encoding scheme is proposed. In the authors' video encoder, both the temporal and interview information can be efficiently exploited based on the comparisons of extracted media hashes without performing motion and disparity estimations, which are known to be time-consuming.

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