High Dynamic Range (HDR) television promises to display higher brightness and deeper black levels and thus more vivid and realistic images. However, home video distribution and video broadcasting were historically designed for what we now call standard dynamic range screens (SDR). In order to display SDR content on an HDR screen, it is explicitly or implicitly converted, in a process called inverse tone mapping (iTMO). This paper’s goal is to assess the perceived quality of converted SDR content in comparison to natively graded HDR content. In doing so, this paper aims to enable content creators/distributors to make informed choices between creating/broadcasting HDR content or relying on conversion. To this end, a psychophysical experiment was performed to tests how viewers evaluate the difference between natively graded HDR and a set of SDR to HDR conversion options in a television setup. Results indicate that viewers prefer natively graded HDR content, followed by inverse tone mapping algorithms starting from videos with a compressed dynamic range. When comparing conversion options, users clearly prefer conversion from ‘compressed dynamic range’ SDR over ‘clipped dynamic range’ SDR. Users disliked videos that were naively stretched from standard SDR. In addition, a significant effect of type of sequence was found, with a preference for light scenes with low contrast.

高动态范围（HDR）电视有望显示更高的亮度和更深的黑电平，从而显示更生动逼真的图像。但是，家庭视频分发和视频广播在历史上是为现在称为标准动态范围屏幕（SDR）的用户而设计的。为了在HDR屏幕上显示SDR内容，需要在称为逆色调映射（iTMO）的过程中对其进行显式或隐式转换。本文的目的是评估与本地分级的HDR内容相比，转换后的SDR内容的感知质量。为此，本文旨在使内容创建者/发行者可以在创建/广播HDR内容或依赖转换之间做出明智的选择。为此，进行了一项心理物理实验，以测试观看者如何评估电视设置中本机分级的HDR与一组SDR到HDR转换选项之间的差异。结果表明，观众更喜欢本机分级的HDR内容，其次是从具有动态范围压缩的视频开始的逆色调映射算法。在比较转换选项时，用户显然更喜欢从“压缩动态范围” SDR进行转换，而不是“固定动态范围” SDR。用户不喜欢从标准SDR延伸而来的视频。另外，发现了序列类型的显着影响，优选低对比度的光场景。然后是从具有动态范围压缩的视频开始的逆色调映射算法。在比较转换选项时，用户显然更喜欢从“压缩动态范围” SDR进行转换，而不是“固定动态范围” SDR。用户不喜欢从标准SDR延伸而来的视频。另外，发现了序列类型的显着影响，优选低对比度的光场景。然后是从具有动态范围压缩的视频开始的逆色调映射算法。在比较转换选项时，用户显然更喜欢从“压缩动态范围” SDR进行转换，而不是“固定动态范围” SDR。用户不喜欢从标准SDR延伸而来的视频。另外，发现了序列类型的显着影响，优选低对比度的光场景。