Spatio-angular sharpening for multiview 3D displays
In this paper, we analyze the reproduction of light fields on multiview 3D displays. A two-way interaction between the input light field signal (which is often aliased) and the interview light leakage in modern multiview 3D displays is characterized in the joint spatio-angular frequency domain. Reconstruction of light fields by all physical 3D displays is prone to light leakage. This means that the reconstruction low pass filter implemented by the display is too broad in the angular domain, which causes loss of image sharpness. The combination of the 3D display point spread function and human visual system provides the narrow band low pass filter which removes spectral replicas in the reconstructed light field on the multiview display. The non-ideality of this filter is corrected with the proposed prefiltering technique.