Look-up table redution using the relationship between pixel pitch and reconstructed distance

In novel look-up table (N-LUT) method, the size of LUT is determined by the amount of shift of the principle fringe pattern (PFP). Thus, if the resolution of object is increased or pixel pitch of hologram is decreased, the size of LUT is increased. Therefore, in this paper, we propose the memory reduction method using the relation of pixel pitch of hologram and reconstruction distance. Some experiments with a test 3-D object are carried out and the reduction ratio of LUT is analyzed.