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arXiv 2105.00567cs.MM
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多特征360度视频质量评估

Multi-feature 360 Video Quality Estimation

Roberto G. de A. Azevedo, Neil Birkbeck, Ivan Janatra, Balu Adsumilli, Pascal Frossard

摘要:

我们提出了一种新的360度(全向)视频的视觉质量评估方法。该方法基于从360度视频中提取的视点上的多个时空客观质量特征的计算。一个新的模型被学习,以适当地将这些特征组合成一个与主观质量分数密切匹配的度量。所提出的方法的主要动机是:1)在视口上计算的质量度量比在投影域上计算的度量更好地捕获用户体验; 2)视口的使用容易支持当前360度视频系统中使用的不同投影方法;以及3)没有一个单独的客观图像质量度量对于所有类型的视觉失真总是表现最好,而它们的学习组合能够适应不同的条件。基于最大的360度视频质量数据集和交叉数据集验证的实验结果表明,所提出的度量优于最先进的360度和2D视频质量度量。

英文摘要:

We propose a new method for the visual quality assessment of 360-degree (omnidirectional) videos. The proposed method is based on computing multiple spatio-temporal objective quality features on viewports extracted from 360-degree videos. A new model is learnt to properly combine these features into a metric that closely matches subjective quality scores. The main motivations for the proposed approach are that: 1) quality metrics computed on viewports better captures the user experience than metrics computed on the projection domain; 2) the use of viewports easily supports different projection methods being used in current 360-degree video systems; and 3) no individual objective image quality metric always performs the best for all types of visual distortions, while a learned combination of them is able to adapt to different conditions. Experimental results, based on both the largest available 360-degree videos quality dataset and a cross-dataset validation, demonstrate that the proposed metric outperforms state-of-the-art 360-degree and 2D video quality metrics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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