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Video quality assessment for computer graphics applications

机译:计算机图形应用程序的视频质量评估

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摘要

Numerous current Computer Graphics methods produce video sequences as their outcome. The merit of these methods is often judged by assessing the quality of a set of results through lengthy user studies. We present a full-reference video quality metric geared specifically towards the requirements of Computer Graphics applications as a faster computational alternative to subjective evaluation. Our metric can compare a video pair with arbitrary dynamic ranges, and comprises a human visual system model for a wide range of luminance levels, that predicts distortion visibility through models of luminance adaptation, spatiotemporal contrast sensitivity and visual masking. We present applications of the proposed metric to quality prediction of HDR video compression and temporal tone mapping, comparison of different rendering approaches and qualities, and assessing the impact of variable frame rate to perceived quality.
机译:许多当前的计算机图形学方法都会生成视频序列作为其结果。这些方法的优点通常是通过长时间的用户研究评估一组结果的质量来判断的。我们提出了一个完全参考的视频质量指标,专门针对计算机图形学应用程序的要求,作为主观评估的更快计算替代方案。我们的指标可以将视频对与任意动态范围进行比较,并包括一个适用于各种亮度水平的人类视觉系统模型,该模型通过亮度适应、时空对比敏感度和视觉遮罩模型预测失真可见性。我们介绍了所提出的指标在HDR视频压缩和时间色调映射的质量预测中的应用,比较了不同的渲染方法和质量,并评估了可变帧速率对感知质量的影响。

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