Depth-Perception Preserved Content Remapping Based on Cornsweet Illusion for 3D Display

Usually, there is a limited depth of field (DOF) for automultiscopic three-dimensional (3D) displays, which requires modifying light fields of 3D scenes to fit into the DOF constraint of a target display. A novel depth-perception preserved 3D content remapping method is presented based on Cornsweet illusion, which uses Cornsweet profile to enhance the depth-perception by augmenting the contrast at the edges. The original depth map is decomposed into multifrequency bands and remapped by reducing the low-frequency bands while preserving the high-frequency parts, which leads to Cornsweet profiles with the preserved perceptual depth. The manipulation of the multifrequency bands is processed in logarithmic domain with a well-designed monotonic mapping function. The tradeoff between displayed blur and depth preservation is achieved by adopting the available objective metric based on human vision system. A warping-based view synthesis method is adopted to retarget the light field according to the modified depth map. Experimental results show that the displayed modified 3D light field appears sharp, and the original perception of depth is maximally preserved.