Anti-aliasing for light field rendering
Ghosting artifact resulted from angular undersampling is a major issue of light field rendering. In this paper, we propose an anti-aliasing method that compensates the effect of undersampling by making use of depth information. It can be incorporated into most existing refocusing algorithms to render high-quality images from light field. The method yields proper anti-aliasing across all depth range. Mathematical derivation of the method and the physical intuition behind the idea are described. Results are shown to demonstrate the performance of the method compared to previous ones.