We validate a physically based and spectral rendering framework with improved color reproduction. With a recently developed model, we take into account both the colorimetric specifications of the rendering display as well as the spectral and angular characteristics of lighting and also the spectral reflectance of the objects. Therefore, it should provide much better color reproduction than those based on the common standard red, green, blue (sRGB) color space. In addition, it allows real-time rendering on modest hardware and displays. We evaluated the color reproduction of the new rendering framework by psychophysical tests using spectrophotometric measurements of 30 chromatic paint samples. They were rendered on an iPad display, as viewed inside the Byko-spectra effect light booth. We asked 16 observers to evaluate the color match by directly comparing the rendered samples with the physical samples, using two different psychophysical assessment methods. The color reproduction was found to be strongly improved with respect to results obtained with default sRGB color encoding space. The average color reproduction match was found to be equivalent to $\Delta{{\rm{E}}_{00}} = {1.6}$, which is a small but noticeable color difference. In 80% of the visual assessments, the color reproduction was described as being at least as good as between “difference visible but still acceptable” and “difference visible, doubtful match.”

中文翻译：

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通过分光光度法测量得到的彩色物体外观的视觉验证

我们验证了具有改进的色彩还原的基于物理和光谱的渲染框架。对于最近开发的模型，我们既要考虑渲染显示的色度规格，也要考虑照明的光谱和角度特性，以及对象的光谱反射率。因此，它应比基于通用标准红，绿，蓝（sRGB）颜色空间的颜色再现提供更好的颜色再现。此外，它允许在适度的硬件和显示器上进行实时渲染。我们使用30色涂料样品的分光光度法通过心理物理测试评估了新渲染框架的颜色再现性。它们是在iPad显示器上渲染的，就像在Byko光谱效果灯棚内看到的那样。我们要求16位观察者通过使用两种不同的心理物理评估方法，直接将渲染的样本与物理样本进行比较，以评估颜色匹配。发现相对于使用默认sRGB颜色编码空间获得的结果，颜色再现得到了极大的改善。发现平均色彩还原匹配等于$ \ Delta {{\ rm {E}} _ {00}} = {1.6} $，这是一个很小但明显的色差。在80％的视觉评估中，色彩还原被描述为至少与“可见差异但仍可以接受”和“可见差异，可疑匹配”之间一样好。