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Figure 4
Holographic imaging at ID01. (a–d) Coffee grain aspirated by a pipette and used as a test object. (a) Optical microscope top view showing the sample reaching into the opening. (b) Hologram of the aspirated sample. (c) Hologram corrected by a flat field containing the pipette. (d) Nonlinear Fresnel Tikhonov phase reconstruction (Huhn et al., 2022 ![]() ![]() |