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Figure 5
Input images, median-filter results, Paganin phase retrieval results and N2I results trained on eight samples for full-dose and one-third dose experiments (top row) are shown alongside an Otsu threshold (bottom row). In both the full-dose input image and the full-dose input image with a median filter applied, excess noise is captured, making segmentation of features using traditional thresholding techniques impossible. The full-dose image with Paganin phase retrieval was smoothed with features segmented using an Otsu threshold.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 3| May 2025|
https://doi.org/10.1107/S1600577525001833
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