Compressed off-axis digital holography
Compressed off-axis digital holography
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DOI：
10.1088/2040-8986/aba940
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发表时间：
2020-08
影响因子：
2.1
通讯作者：
S. Yoshida
中科院分区：
文献类型：
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作者：
S. Yoshida
傅里叶变换方法(FTM)是一种从单幅全息图中再现波前的方法，作为一种再现技术在数字全息术中得到了广泛的应用。然而，由于所需的频率滤波，空间带宽乘积(SBP)是有限的。我们提出了一种基于压缩感知的波前重建算法，可以获得较高的SBP来代替FTM。该方法利用全变差正则化方法求解全息图记录模型，即可重构出高SBP的波前。通过仿真和实验验证了该方法的有效性。该方法无需改动即可应用于常规的离轴差动量测装置，可广泛应用于各种领域。
The Fourier transform method (FTM), which can reconstruct a wavefront from a single hologram, is widely used in digital holography (DH) as a reconstruction technique. However, the space-bandwidth product (SBP) is limited because of the frequency filtering required. We propose a wavefront reconstruction algorithm based on compressed sensing that can obtain a high SBP for use instead of the FTM. The proposed method can reconstruct a high-SBP wavefront by solving the hologram recording model with total variation regularization. We demonstrate the proposed method’s effectiveness via simulations and experiments. The method can be applied to conventional off-axis DH without alteration and thus can be applied in various fields.