Nagai Takehiro, Kiyokawa Hiroaki, Kim Juno
School of Engineering, Institute of Science Tokyo, Yokohama, Japan.
Graduate School of Science and Engineering, Saitama University, Saitama, Japan.
PLoS One. 2025 Feb 18;20(2):e0314439. doi: 10.1371/journal.pone.0314439. eCollection 2025.
It is well established that object shape perception significantly influences the perception of translucency. However, how object shape cues such as motion and binocular disparity affect the perception of translucency in rich environments, like virtual reality or real visual environments, remains unclear. This study aims to psychophysically measure the extent to which multiple object shape cues influence the perception of translucency. Additionally, we examined whether top-down factors, such as changes in cognitive attitude caused by the sequence of experiments, affect translucency perception. The results revealed that while motion and binocular disparity enhance translucency perception, this effect is confined to situations where shape cues are poor. Moreover, the effect became particularly pronounced when the experiments began with weak specular reflection stimuli, followed by the experiments using stimuli with specular reflection. In the case of translucent objects without specular reflection, strong shape information cannot be derived solely from shading patterns. These findings thus suggest that top-down factors related to shape modulate the influence of shape cues on translucency perception.
众所周知，物体形状感知会显著影响半透明感知。然而，在虚拟现实或真实视觉环境等丰富环境中，诸如运动和双眼视差等物体形状线索如何影响半透明感知仍不清楚。本研究旨在通过心理物理学方法测量多种物体形状线索对半透明感知的影响程度。此外，我们还研究了自上而下的因素，如实验顺序导致的认知态度变化，是否会影响半透明感知。结果表明，虽然运动和双眼视差会增强半透明感知，但这种效果仅限于形状线索较差的情况。此外，当实验从弱镜面反射刺激开始，然后使用镜面反射刺激进行实验时，这种效果变得尤为明显。在没有镜面反射的半透明物体的情况下，仅从阴影图案无法获得强烈的形状信息。因此，这些发现表明，与形状相关的自上而下的因素会调节形状线索对半透明感知的影响。
