Glossiness perception and its pupillary response
Glossiness perception and its pupillary response
复制标题
DOI：
10.1016/j.visres.2024.108393
复制
发表时间：
2024-04-04
期刊：
影响因子：
1.8
通讯作者：
Minami，Tetsuto
中科院分区：
文献类型：
--
作者：
Tamura，Hideki;Nakauchi，Shigeki;Minami，Tetsuto
最近的研究表明，瞳孔反应的变化取决于感知因素，例如视错觉和亮度引起的主观亮度。然而，源自物体表面光泽度感知的感知因素影响瞳孔反应的方式仍不清楚。我们通过记录瞳孔直径的光泽度评级实验研究了光泽度感知和瞳孔反应之间的关系。我们准备了一般对象图像（原始）和随机图像（洗牌），其中包含相同的图像和随机小正方形区域作为刺激。通过匹配亮度直方图来控制图像特征。观察者被要求对 3,000 毫秒内呈现的刺激的感知光泽度进行评分，并记录他们瞳孔直径的变化。在刺激持续时间期间，在瞳孔反应的峰值收缩处，具有较高光泽度等级的图像比具有较低光泽度等级的图像更多地收缩瞳孔尺寸。线性混合效应模型表明，光泽度等级、图像类别（原始/混洗）、亮度直方图方差和刺激面积在预测瞳孔反应方面最有效。这些结果表明，高光泽度物体的图像区域（例如镜面高光）获得的虚幻亮度会引起瞳孔收缩。
Recent studies have revealed that pupillary response changes depend on perceptual factors such as subjective brightness caused by optical illusions and luminance. However, the manner in which the perceptual factor that is derived from the glossiness perception of object surfaces affects the pupillary response remains unclear. We investigated the relationship between the glossiness perception and pupillary response through a glossiness rating experiment that included recording the pupil diameter. We prepared general object images (original) and randomized images (shuffled) that comprised the same images with randomized small square regions as stimuli. The image features were controlled by matching the luminance histogram. The observers were asked to rate the perceived glossiness of the stimuli presented for 3,000 ms and the changes in their pupil diameters were recorded. Images with higher glossiness ratings constricted the pupil size more than those with lower glossiness ratings at the peak constriction of the pupillary responses during the stimulus duration. The linear mixed-effects model demonstrated that the glossiness rating, image category (original/shuffled), variance of the luminance histogram, and stimulus area were most effective in predicting the pupillary responses. These results suggest that the illusory brightness obtained by the image regions of high-glossiness objects, such as specular highlights, induce pupil constriction.