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首页> 外文期刊>Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter >Efficient phase retrieval based on dark fringe extraction and phase pattern construction with a good anti-noise capability
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Efficient phase retrieval based on dark fringe extraction and phase pattern construction with a good anti-noise capability

机译：基于浅噪声能力的暗条纹提取和相位图案结构的高效相位检索

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This paper discusses the noisy phase retrieval problem: recovering a complex image signal with independent noise from quadratic measurements. Inspired by the dark fringes shown in the measured images of the array detector, a novel phase retrieval approach is proposed and demonstrated both theoretically and experimentally to apply the information of extracted dark fringes and its relationship with designed phase patterns. Here the dark fringes are extracted from the image plane, rather than the Fourier/focal plane, and the invalid extracted fringes can be tactfully bypassed to improve the anti-noise capability. A more accurate relative phase ratio between arbitrary two pixels is achieved by calculating the multiplicative ratios (or the sum of phase difference) on the path between them. Then the object phase image can be reconstructed precisely. Our approach is a good choice for retrieving high-quality phase images from noisy signals and has broad prospects in practical applications such as X-ray crystallography, diffractive imaging, and so on. (C) 2017 Elsevier B.V. All rights reserved.
机译：本文讨论了嘈杂的相位检索问题：从二次测量中恢复具有独立噪声的复杂图像信号。由阵列检测器的测量图像中所示的黑暗条纹的启发，理论上提出了一种新的相位检索方法，并在理论上和实验上演示以应用提取的暗条纹的信息及其与设计的相位模式的关系。这里，从图像平面提取黑暗条纹，而不是傅立叶/焦平面，并且可以致触由无效提取的条纹以提高抗噪声能力。通过计算在它们之间的路径上的乘法比率（或相位差之和）来实现任意两个像素之间的更精确的相位比。然后可以精确地重建对象相位图像。我们的方法是从嘈杂信号中检索高质量相位图像的良好选择，并且在X射线晶体学，衍射成像等实际应用中具有广阔的前景，衍射成像等。 （c）2017年Elsevier B.V.保留所有权利。

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