A method of solving tilt illumination for multiple distance phase retrieval

A method of solving tilt illumination for multiple distance phase retrieval
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多距离相位检索的倾斜照明求解方法

DOI:
10.1016/j.optlaseng.2018.02.003
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发表时间:
2018-07
影响因子:
4.6
通讯作者:
Zhengjun Liu
Zhengjun Liu
中科院分区:
工程技术2区
文献类型:
--
作者:
Cheng Guo;Qiang Li;Jiubin Tan;Shutian Liu;Zhengjun Liu

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多距离相位恢复是利用一系列强度模式重建物体复值图像的技术。然而,源自入射光的离轴位移的倾斜照明显著地损害其成像质量。为了消除这种影响,我们使用互相关校准来估计入射光的倾斜角度和基于傅立叶的策略来校正倾斜照明效应。与其他方法相比,在仿真和实验中,二进制和生物对象都稳定重建。为解决无透镜多距离系统的倾斜照明问题提供了一种简单而有益的方法。
Multiple distance phase retrieval is a technique of using a series of intensity patterns to reconstruct a complex-valued image of object. However, tilt illumination originating from the off-axis displacement of incident light significantly impairs its imaging quality. To eliminate this affection, we use cross-correlation calibration to estimate oblique angle of incident light and a Fourier-based strategy to correct tilted illumination effect. Compared to other methods, binary and biological object are both stably reconstructed in simulation and experiment. This work provides a simple but beneficial method to solve the problem of tilt illumination for lens-free multi-distance system.
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