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西安电子科技大学 综合业务网理论及关键技术国家重点实验室, 陕西 西安 710071
Received:27 May 2016,
Accepted:19 July 2016,
Published:2016-10
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Na ZHAO, Jia-run SONG, Wen-jie ZOU. Evaluation of display quality on UHDTV for multi-resolution videos[J]. Chinese journal of liquid crystals and displays, 2016, 31(10): 989-997.
Na ZHAO, Jia-run SONG, Wen-jie ZOU. Evaluation of display quality on UHDTV for multi-resolution videos[J]. Chinese journal of liquid crystals and displays, 2016, 31(10): 989-997. DOI: 10.3788/YJYXS20163110.0989.
超高清电视(UHDTV,Ultra High Definition TV)凭借其超高的屏幕分辨率可以更细腻地展现视频的内容,受到越来越多用户的青睐,然而目前超高清节目源发展有限,通常只能将低于超高清电视屏幕分辨率的视频经过插值后播放,这样处理可能会对用户主观体验带来一定的影响。如何准确评估UHDTV多分辨率视频源对视频显示质量的影响,对UHDTV业务的部署和优化起到指导性的作用。本文通过主观实验,利用SSIM算法预测视频源编码质量,并进一步分析视频源分辨率对UHDTV视频显示质量的影响,提出一种面向UHDTV的视频显示质量评估模型。实验结果表明,相比SSIM、VIFp和MOVIE三种经典的视频质量评估算法,本文模型所得视频显示质量和主观质量之间的皮尔森系数分别提高1.13%、1.89%和2.31%,斯皮尔曼等级相关系数分别提高1.35%、1.53%和2.24%,RMSE降低35.05%、36.94%和39.71%。所提模型可以更加准确地评价UHDTV视频显示质量。
Ultra High Definition Television (UHDTV) has been gaining popularity with its ultrahigh screen definition. However
the lack of Ultra HD resources usually leads to the result that the videos played on UHDTV are up-scaled
which may affect the display quality of the videos. Until now
there are few researches on UHDTV video display quality. In this paper
the SSIM algorithm is employed to evaluate the video coding quality
then the effects of video resolution on display quality are analyzed according to the results of the subjective experiment
and finally a video quality assessment model is proposed for UHDTV service. Experimental results and comparisons with the classic SSIM
VIFp and MOVIE metrics show that the proposed model gets increments of 1.13%
1.89% and 2.31% in PCC
increments of 1.35%
1.53% and 2.24% in SRCC
and decrements of 35.05%
36.94% and 39.71% in RMSE
respectively. Thus
the proposed model can be used to estimate the video display quality on UHDTV more accurately.
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