Li Shengfu, Zhao Yu
Opt Express. 2019 Jan 21;27(2):1569-1577. doi: 10.1364/OE.27.001569.
The digital in-line particle holography suffers from speckle noise, for which considerable efforts have been devoted in order to mitigate it by designing post-processing algorithms. This paper proposes a novel approach, which mitigates the speckle noise by increasing the signal-to-noise ratio (SNR). It involves the joint design of optical systems and post-processing algorithms, and enhances the SNR by combining several holograms captured under different illumination angles. The experimental results show that the proposed scheme performs better than the normal scheme in terms of SNR and false-detection-ratio.
数字同轴粒子全息术存在散斑噪声问题，为此人们投入了大量精力，通过设计后处理算法来减轻这种噪声。本文提出了一种新颖的方法，通过提高信噪比（SNR）来减轻散斑噪声。该方法涉及光学系统和后处理算法的联合设计，并通过组合在不同照明角度下捕获的多个全息图来提高信噪比。实验结果表明，所提出的方案在信噪比和误检率方面比常规方案表现更好。
