Single exposure vs tone mapped High Dynamic Range images: A study based on quality of experience
Single exposure vs tone mapped High Dynamic Range images: A study based on quality of experience
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单次曝光与色调映射高动态范围图像：基于体验质量的研究
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Romuald Pépion
中科院分区：
文献类型：
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作者：
Manish Narwaria;Matthieu Perreira Da Silva;P. Callet;Romuald Pépion
用于使高动态范围（HDR）视觉信号的动态范围适合于显示器的动态范围的色调映射算子（TMO）通常是不透明的并且修改场景的视觉外观。尽管如此，色调映射的内容与单次曝光场景相比通常倾向于具有更多的视觉细节。然而，尚不清楚色调映射HDR中的额外细节是否在场景外观方面影响用户对单个曝光内容的偏好以及影响程度。本文旨在通过全面的主观研究来阐明这一问题。我们的研究结果表明，没有统计学证据来确定用户是否更喜欢色调映射的内容，而不是单次曝光的版本，因为它们更接近于对应的HDR场景。我们提出了这些结果，并概述了可能的因素，有助于这有点意想不到的发现。
Tone mapping operators (TMOs), employed to fit the dynamic range of High Dynamic Range (HDR) visual signals to that of the display, are generally non-transparent and modify the visual appearance of the scene. Despite this, tone mapped content generally tends to have more visual details as compared to a single exposure scene. It is however not clear if the extra details in tone mapped HDR affect user preferences over a single exposure content in terms of scene appearance and to what extent. This paper aims to shed light on this issue via a comprehensive subjective study. Our results reveal that there is no statistical evidence to establish if the users preferred tone mapped content over the single exposure version as closer representation of the corresponding HDR scene. We present those results as well as outline the possible factors contributing to this somewhat unexpected finding.