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首页> 外文期刊>Optical engineering >Adaptive weighted total variation regularized phase retrieval in differential phase-contrast imaging
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Adaptive weighted total variation regularized phase retrieval in differential phase-contrast imaging

机译：差分相衬成像中的自适应加权总变化正则化相位检索

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摘要

Phase retrieval with unidirectional differential phase-contrast image requires integration with noisy data, which is an illposed inverse problem. Conventional direct integration method would result in severe streak artifacts. Total variation (TV) regularization-based method would reduce the streak artifacts, but the edges parallel with phase-contrast sensitivity direction are likely to be over smoothed. We propose an improved weighted TV regularization phase retrieval method by introducing a weighting factor to the conventional TV term. When applied to simulation and experimental data, this method shows an advantage of preserving the sharpness of the edges while preserving the ability of reducing streak artifacts compared with conventional TV-regularization method.
机译：具有单向差分相衬图像的相位检索需要与噪声数据集成，这是一个不适当地的逆问题。常规的直接积分方法会导致严重的条纹伪影。基于总变化（TV）正则化的方法将减少条纹伪影，但与相位对比敏感度方向平行的边缘可能会过度平滑。通过将加权因子引入常规TV项，我们提出了一种改进的加权TV正则化相位检索方法。当应用于模拟和实验数据时，与传统的电视常规化方法相比，该方法显示出在保留边缘清晰度的同时保留减少条纹伪影的能力的优点。

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  • 来源
    《Optical engineering》 |2018年第5期|053108.1-053108.5|共5页
  • 作者

    Yan Wang; Wanxia Huang; Qili He; Zhongzhu Zhu; Jin Zhang; Qinxi Yuan; Kai Zhang; Peiping Zhu;

  • 作者单位

    Chinese Academy of Sciences, Institute of High Energy Physics, Laboratory of X-ray Optics and Technologies, Beijing Synchrotron Radiation Facility, Beijing, China,University of Chinese Academy of Sciences, Beijing, China;

    Chinese Academy of Sciences, Institute of High Energy Physics, Laboratory of X-ray Optics and Technologies, Beijing Synchrotron Radiation Facility, Beijing, China;

    Chinese Academy of Sciences, Institute of High Energy Physics, Laboratory of X-ray Optics and Technologies, Beijing Synchrotron Radiation Facility, Beijing, China,University of Chinese Academy of Sciences, Beijing, China;

    Chinese Academy of Sciences, Institute of High Energy Physics, Laboratory of X-ray Optics and Technologies, Beijing Synchrotron Radiation Facility, Beijing, China;

    Chinese Academy of Sciences, Institute of High Energy Physics, Laboratory of X-ray Optics and Technologies, Beijing Synchrotron Radiation Facility, Beijing, China,University of Chinese Academy of Sciences, Beijing, China;

    Chinese Academy of Sciences, Institute of High Energy Physics, Laboratory of X-ray Optics and Technologies, Beijing Synchrotron Radiation Facility, Beijing, China;

    Chinese Academy of Sciences, Institute of High Energy Physics, Laboratory of X-ray Optics and Technologies, Beijing Synchrotron Radiation Facility, Beijing, China,Capital Normal University, Beijing Advanced Innovation Center for Imaging Technology, Beijing, China;

    Chinese Academy of Sciences, Institute of High Energy Physics, Laboratory of X-ray Optics and Technologies, Beijing Synchrotron Radiation Facility, Beijing, China,Beijing Center for Mathematics and Information Interdisciplinary Sciences, Beijing, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    x-ray imaging; phase retrieval; inverse problems;

    机译：X射线成像;相位检索;反问题;

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