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首页> 外文期刊>Journal of Electronic Imaging >Prediction of results from subjective evaluation of real-time-capable tone-mapping operators applied to limited high-dynamic-range images
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Prediction of results from subjective evaluation of real-time-capable tone-mapping operators applied to limited high-dynamic-range images

机译：对适用于有限的高动态范围图像的实时实时色调映射算子进行主观评估的结果预测

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摘要

The dynamic range of digital image sensors is growingnfaster than the reproducible dynamic range of standard display andnprint devices. In an assessment, we evaluated eight real-time-ncapable, high-dynamic-range (HDR) tone-mapping operators, usingnHDR images restricted to 12 bits per channel, and mapping to 8-bitnlow-dynamic-range (LDR) output data. In our survey, 51 test per-nsons rated the subjective quality of LDR images of 15 scenes. Forneach scene, the operators were tested against linear tone mapping.nFrom that survey, we derived three operators that performed betternthan linear mapping and evaluated their impact on exposure whennusing tone-mapping in an imaging chain. To mathematically predictnthe subjective quality of tone-mapped images, we tested five figuresnof merit against the empirical results of the survey. We propose anquality measure derived from the Naka-Rushton equation. Wenevaluate the proposed metric against four other image quality met-nrics, with our novel measure matching the subjective results best.
机译：数字图像传感器的动态范围比标准显示和nprint设备的可再现动态范围增长更快。在评估中，我们评估了8个具有实时能力的高动态范围（HDR）色调映射运算符，使用限制为每通道12位的nHDR图像，并映射到8位低动态范围（LDR）输出数据。在我们的调查中，有51个测试对每个场景的15个场景的LDR图像进行了主观评估。在每个场景中，针对线性色调映射测试了算子。n从该调查中，我们推导出了三个比线性映射表现更好的算子，并评估了在成像链中使用色调映射时它们对曝光的影响。为了数学上预测色调映射图像的主观质量，我们针对调查的经验结果测试了五个指标。我们提出了从Naka-Rushton方程导出的等式度量。我们针对其他四个图像质量指标对建议的指标进行了评估，而我们的新颖指标最能匹配主观结果。

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