Fig. 2: Quality estimation of in situ images.
From: Imaging Cu2O nanocube hollowing in solution by quantitative in situ X-ray ptychography
a, b Ptychographic images of particles growing on the entrance and exit windows, respectively, of the in situ reactor at the same reaction time. In b, the background fluctuations are varying on larger scales compared to a due to the larger illumination size on the exit window. c Ptychographic image of the entrance window at a later reaction time compared to (a, b). The gray scale indicates the phase shift of the image in radian. d False-colored overlay of images of the entrance (red) and exit (cyan) windows taken at the same reaction time. e False-colored overlay of aligned images of the entrance window taken at consecutive time steps of 10.7 h (red) and 11.1 h (blue). The background randomly fluctuates between images. f Fourier ring correlations (FRC) plotted for the entrance and exit window slices. We used the half-bit criterion41 (dashed line) for resolution estimation to account for the loss in reconstruction quality induced by splitting the data set.
