Browsing by Author "Poon, T. C."

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    Optimal sampled phase-only hologram (OSPOH)
    Tsang, P. W. M.; Liu, J. Ping; Lam, H.; Poon, T. C. (Optical Society of America, 2021-08-02)
    A sampled phase-only hologram (SPOH) is the phase component of the hologram of an object image with pixels being sampled with a periodic grid-cross pattern. The reconstructed image of a SPOH is a sparse image with abundant empty voids and degradation in sharpness and contrast. In this paper we proposed a method based on a new sampling scheme, together with stochastic binary search (SBS), to obtain an optimal sampling lattice that can be applied to generate phase-only holograms with enhanced reconstructed image. Experimental results show that with our proposed method, the fidelity and quality of the reconstructed image are increased.