Performance evaluation of reverse tone mapping operators for dynamic range expansion of SDR video content
Performance evaluation of reverse tone mapping operators for dynamic range expansion of SDR video content
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DOI：
10.1109/mmsp.2017.8122213
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发表时间：
2017-10
期刊：
影响因子：
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通讯作者：
Hu Hao;Yang Zhang;D. Agrafiotis;M. Naccari;M. Mrak
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文献类型：
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作者：
Hu Hao;Yang Zhang;D. Agrafiotis;M. Naccari;M. Mrak
当在高动态范围(HDR)显示器上显示标准动态范围(SDR)视频时，可以使用反向色调映射操作来将SDR视频的动态范围扩展到显示器所提供的动态范围。对现有的反向色调映射算子(RTMOS)进行了主观性能评价。目前的研究评估了rTMO在曝光良好的SDR视频和表现出曝光变化的视频上的性能，这通常是用户生成的内容(例如在手机上捕获的内容)的情况。文章强调了在这种情况下出现的闪烁伪影，并评估了改进的去闪烁方法对感知质量的影响。
When displaying Standard Dynamic Range (SDR) video on High Dynamic Range (HDR) displays a reverse tone mapping operation can be employed to expand the dynamic range of the SDR video to that offered by the display. This paper presents a subjective performance evaluation of existing reverse Tone Mapping Operators (rTMOs). The presented study evaluates the performance of rTMOs acting on both well exposed SDR video and video that exhibits exposure variation, as is often the case with user generated content (e.g. captured on mobile phones). The paper highlights flickering artefacts that arise in such cases and evaluates the effect on perceived quality of an adapted de-flickering method.