Method for 3D gray-to-gray crosstalk uniformity measurement with high perceptual relevance

AbstractThree-dimensional (3D) crosstalk is a critical perceptual factor that degrades the image quality and causes visual discomfort when using stereoscopic displays. Although many crosstalk characterization methods have been published, few of them consider human perception. Moreover, most of these methods were designed for discrete sample measurements and do not account for the way humans observe entire displays. The aim of this research was to measure the 3D gray-to-gray crosstalk and its uniformity in a way that correlates to human vision. Two perception experiments were performed: one for local crosstalk value perception and another for crosstalk map perception. The correlations between the perception data and the objective crosstalk values calculated using nine different equations were compared. Then the correlations between the perceptual crosstalk maps and the calculated crosstalk maps were analyzed with camera-captured luminance levels using three different equations. The study results demonstrate that the proposed crosstalk equation based on Stevens’ law leads to a higher correlation with the perceived crosstalk for both a single sample measurement and the entire screen. It was also demonstrated that low gray levels in the intended channel lead to higher crosstalk values and decreased uniformity.