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Figure 2
(a) Phase image from the single-slice ptychography reconstruction. (b) Fourier transform of the single-slice reconstruction image. (c) The nickel K map was interpolated and upsampled to match the dimension of the reconstructed image. The obtained fluorescence map [shown in Fig. 3[link](d)] is then Fourier transformed to reciprocal space. A low-pass filter was applied to select the low-spatial-frequency signal. (d) Normalized (c) is removed from (b) and Fourier transformed back to real space giving a modified phase image with the nickel oxide features removed.

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ISSN: 2053-2733
Volume 75| Part 2| March 2019| Pages 336-341
https://doi.org/10.1107/S2053273318017229
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