Binocular disparity's logarithmic impact on gloss perception sensitivity

Gloss perception plays a critical role in surface material recognition, directly influencing object interpretation in both real and virtual environments. In this study, we investigate the relationship between binocular disparity and gloss perception, proposing a novel application of the Weber-Fechner Law to examine how disparity modulates gloss sensitivity. We conducted a series of psychophysical experiments to measure the Just Noticeable Difference (JND) in gloss perception across varying disparity levels. Participants completed multiple experimental sessions, and we processed outliers in the data using the Interquartile Range (IQR) method. To test our hypothesis, we applied logarithmic regression analysis, which demonstrated strong adherence to the Weber-Fechner Law. Our results indicate that gloss perception sensitivity decreases logarithmically as disparity increases, requiring progressively larger disparity changes to detect gloss differences. These findings provide new insights into the integration of binocular disparity and gloss perception, suggesting practical implications for optimizing stereoscopic displays and virtual reality environments.