Relationship between fluctuations of disparity data and picture quality in stereoscopic image

With stereoscopic image coding, including transfer of planar image signal along with depth (disparity) data related to object's contours, and then reproduction of stereoscopic image at the receiving end, fluctuations of disparity data cause 3D distortions in the reproduced image, which are perceived as deterioration of picture quality. In this paper, such picture quality deterioration is examined in terms of influence by fluctuation parameters, object's shape, and other factors. Experimental results indicate that the detection limit for disparity fluctuation is nearly completely dictated by frequency spectrum, and the sensitivity reaches its peak around 4.5 cycles/deg. In addition, sensitivity grows with smaller object's width within viewing angle of 3 through 12 minutes; however, sensitivity curves in logarithmic plots are very similar in shape.