Epple F M, Potdevin G, Thibault P, Ehn S, Herzen J, Hipp A, Beckmann F, Pfeiffer F
Opt Express. 2013 Dec 2;21(24):29101-8. doi: 10.1364/OE.21.029101.
We present a spectral phase unwrapping approach for grating-based differential phase-contrast data where the unwrapped interferometer phase shift is estimated from energy discriminated measurements using maximum likelihood principles. We demonstrate the method on tomographic data sets of a test specimen taken at different x-ray energies using synchrotron radiation. The proposed unwrapping technique was demonstrated to successfully correct the data set for phase wrapping.
我们提出了一种用于基于光栅的差分相衬数据的光谱相位展开方法，其中通过使用最大似然原理从能量分辨测量中估计展开后的干涉仪相移。我们在使用同步辐射在不同X射线能量下获取的测试样品的断层数据集上演示了该方法。所提出的展开技术被证明能够成功校正数据集的相位缠绕。
