Numerical iterative approach for zero-order term elimination in off-axis digital holography.
Numerical iterative approach for zero-order term elimination in off-axis digital holography.
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DOI：
10.1364/oe.21.028314
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发表时间：
2013-11
期刊：
影响因子：
3.8
通讯作者：
Z. Ma;Lijun Deng;Yong Yang;H. Zhai;Qi Ge
中科院分区：
文献类型：
--
作者：
Z. Ma;Lijun Deng;Yong Yang;H. Zhai;Qi Ge
提出了一种新的数值迭代方法，有效地消除了零级项，提高了离轴数字全息再现像的信噪比。迭代在空间域中进行，从而大大减少了计算时间，并避免了在谱域中选择滤波器窗口所涉及的主观性。这些优点促进了该方法在实时检测过程中的应用。通过数学推导和数值模拟证实了该方法的可行性，并通过实验获得的全息图测试了该方法的鲁棒性。
A novel numerical iterative approach is proposed to effectively eliminate the zero-order term and to improve the signal-to-noise ratio of the reconstructed image in off-axis digital holography. The iterations are conducted in the spatial domain, resulting in considerable reduction in the computational time and avoiding the subjectivity involved in selecting a filter window in spectral domain. These advantages promote the application of this approach in real-time detection processes. The feasibility of this approach is confirmed by mathematical deductions and numerical simulations, and the robustness of the proposed approach is tested by means of an experimentally obtained hologram.