Lee Seok, Chang Hyunsung, Wey Hocheon, Nam Dongkyung
Appl Opt. 2016 Jan 20;55(3):A104-10. doi: 10.1364/AO.55.00A104.
In this paper, we present a fast hologram pattern generation method by radial symmetric interpolation, which exploits concentric redundancy of a point hologram pattern to reduce computational complexity in hologram pattern calculation, and analyze the quality degradation sources in the proposed method. Compared to the analytic method in which phase and amplitude information is directly calculated from a wave equation, in our method a Fresnel zone plate is periodically sampled along a diagonal line and the wave information of a point hologram is calculated by linear interpolation. During these sampling and interpolation processes, the wave information can be modified from the original signal and the reconstruction quality can be degraded compared to the analytic pattern calculation method. The effects of sampling and linear interpolation are investigated in spatial and frequency domains.
在本文中，我们提出了一种通过径向对称插值生成快速全息图图案的方法，该方法利用点全息图图案的同心冗余来降低全息图图案计算中的计算复杂度，并分析了该方法中质量下降的来源。与从波动方程直接计算相位和幅度信息的解析方法相比，在我们的方法中，菲涅耳波带片沿对角线进行周期性采样，并通过线性插值计算点全息图的波信息。在这些采样和插值过程中，波信息可能会与原始信号相比发生改变，并且与解析图案计算方法相比，重建质量可能会下降。在空间和频域中研究了采样和线性插值的影响。
