立体视频质量客观评价方法研究

Objective Assessment Method for Stereo Video Quality

提出1种部分参考立体视频质量评价方法.首先,在立体视频传输系统的发送端提取参考立体视频的特征信息,将其通过无损的辅助信道传输;然后,在接收端计算失真立体视频的局部结构相似度以及清晰度,并结合运动权重得到立体视频的全局质量结构相似度指标、清晰度指标和深度结构相似度指标;最后,通过回归分析,赋予各指标不同的权重,从而建立部分参考立体视频质量客观评价模型.实验结果表明,所提立体视频质量客观评价模型与主观实验结果具有很好的一致性,而且符合人眼视觉特性,为立体视频领域的发展提供了新的理论依据.

A reduced-reference objective assessment method for stereo video quality was proposed,which consists of three steps. Firstly, some features was extracted from the original stereo video on the sending side, and transmitted through the lossless auxiliary channel to the receiver. Secondly, on the receiving side, local QSSIM（Quality of Structural Similarity） and the definition was calculated from the received stereo video which are lower in quality compared with the original stereo video, and gave them different weight which is dominated by motion to get the global QSSIM, definition and DSSIM（Depth Structural Similarity）. Finally, the multivariate nonlinear regression analysis was used to get the mathematical model of the objective assessment of stereo video. Experiment results demonstrated that the method proposed has a good consistency with the subjective assessment method, corresponds to the trait of human visual and provides a new theoretical basis for the development of stereo video field.