Mobility

Reduce-Reference Transmission-Aware Video Quality Metric for MPEG-4 Encoded Videos Over Lossy Wireless Network

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Executive Summary

In previous studies, Just Noticeable Distortion (JND) is proved as the most suitable index to reflect the videos' content natures. Meanwhile, transmission parameters are the major impact factors to the video quality degradation under unstable wireless networks. Therefore, the authors propose a reduce-reference Transmission-aware Quality Metric (TQM) for real-time quality evaluation for MPEG-4 video streams under lossy wireless network in this paper. There are two major contributions of TQM. Firstly, TQM considers the impacts of transmission parameters extracted from bit stream as Packet Loss Rate (PLR) and Maximum Transmission Unit (MTU). Then, the content-aware feature which is calculated in the encoding phase at sending side by using a linear prediction of developed JND, is included in TQM to improve the prediction accuracy by introduce the discrimination of different videos.

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