metrics and methods of video quality assessment: a brief review

With rapid development of video acquisition devices and wide applications of video data, more and more requirements are established to use video data query. video quality assessment and improvement become popular and important research issues which attract lots of researchers. The video quality can influence technique application, user experience, and application results. This paper firstly reviews research work on video query based applications. Then, various metrics of video quality assessment are reviewed according to the requirement of reference video, including full-reference metrics, no-reference metrics and reduced-reference metrics. In addition, methods of video quality assessment are reviewed by the features, which include visual features, bitstream-based or packet-based features, data features. Finally, a number of video quality improvement methods are briefly introduced.