J Opt Soc Am A Opt Image Sci Vis. 2023 Mar 1;40(3):A220-A229. doi: 10.1364/JOSAA.479972.
Previous studies have shown that information concerning object shape is important for the perception of translucency. This study aims to explore how the perception of semi-opaque objects is influenced by surface gloss. We varied specular roughness, specular amplitude, and the simulated direction of a light source used to illuminate a globally convex bumpy object. We found that perceived lightness and roughness increased as specular roughness was increased. Declines in perceived saturation were observed but were far smaller in magnitude with these increases in specular roughness. There were inverse correlations found between perceived gloss and perceived lightness, perceived transmittance and perceived saturation, and between perceived roughness and perceived gloss. Positive correlations were found between perceived transmittance and glossiness, and between perceived roughness and perceived lightness. These findings suggest that specular reflections influence the perception of transmittance and color attributes, and not just perceived gloss. We also performed follow-up modeling of image data to find that perceived saturation and lightness could be explained by the reliance on different image regions with greater chroma and lower lightness, respectively. We also found systematic effects of lighting direction on perceived transmittance that indicate there are complex perceptual interactions that require further consideration.
先前的研究表明，物体形状的信息对于半透明物体的感知很重要。本研究旨在探讨表面光泽度如何影响半透明物体的感知。我们改变了镜面反射粗糙度、镜面反射幅度以及用于照亮全局凸起物体的模拟光源方向。我们发现，随着镜面反射粗糙度的增加，感知的亮度和粗糙度增加。但随着镜面反射粗糙度的增加，感知饱和度的下降幅度要小得多。我们发现，感知光泽度与感知亮度、感知透明度与感知饱和度以及感知粗糙度与感知光泽度之间存在反比关系。感知透光率和光泽度之间存在正相关关系，感知粗糙度和感知亮度之间也存在正相关关系。这些发现表明，镜面反射会影响透光率和颜色属性的感知，而不仅仅是感知光泽度。我们还对图像数据进行了后续建模，发现感知饱和度和亮度可以分别通过依赖具有更大色度和更低亮度的不同图像区域来解释。我们还发现光照方向对感知透光率的系统影响表明，存在复杂的感知相互作用，需要进一步考虑。
