Qi Lin, Chantler Mike J, Siebert J Paul, Dong Junyu
J Opt Soc Am A Opt Image Sci Vis. 2014 May 1;31(5):935-43. doi: 10.1364/JOSAA.31.000935.
The majority of work on the perception of gloss has been performed using smooth surfaces (e.g., spheres). Previous studies that have employed more complex surfaces reported that increasing mesoscale roughness increases perceived gloss [Psychol. Sci.19, 196 (2008), J. Vis.10(9), 13 (2010), Curr. Biol.22, 1909 (2012)]. We show that the use of realistic rendering conditions is important and that, in contrast to [Psychol. Sci.19, 196 (2008), J. Vis.10(9), 13 (2010)], after a certain point increasing roughness further actually reduces glossiness. We investigate five image statistics of estimated highlights and show that for our stimuli, one in particular, which we term "percentage of highlight area," is highly correlated with perceived gloss. We investigate a simple model that explains the unimodal, nonmonotonic relationship between mesoscale roughness and percentage highlight area.
关于光泽感知的大多数研究都是在光滑表面（如球体）上进行的。此前使用更复杂表面的研究报告称，中尺度粗糙度的增加会提高感知到的光泽度[《心理科学》19, 196 (2008)，《视觉杂志》10(9), 13 (2010)，《当代生物学》22, 1909 (2012)]。我们表明，使用逼真的渲染条件很重要，并且与[《心理科学》19, 196 (2008)，《视觉杂志》10(9), 13 (2010)]相反，在某一点之后，粗糙度的进一步增加实际上会降低光泽度。我们研究了估计高光的五种图像统计量，并表明对于我们的刺激物，特别是我们称为“高光面积百分比”的一种统计量，与感知到的光泽高度相关。我们研究了一个简单的模型，该模型解释了中尺度粗糙度与高光面积百分比之间的单峰、非单调关系。
