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Figure 4
Heatmap illustrating the performance of center detection methods on the polycrystalline dataset D1. Each row corresponds to a diffractogram (numbered according to Table S2; blue-highlighted samples 8, 9, 13, 14 and 15 are from 4D-STEM-in-SEM, while the rest are from TEM) and each column represents a center detection method (manual = three-point detection, phase = phase cross-correlation, ccorr = autocorrelation, intensity = maximum intensity detection, curvefit = pseudo-Voigt profile fitting and hough = Hough transform). Hatched columns indicate the method's performance on pre-processed diffractograms (edge detection using a Sobel operator). The color bar on the right indicates the performance scale: the lightest color (yellow) indicates the most accurate detection, while the darkest color (black) signifies failure or substantial inaccuracy in center location.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 59| Part 3| June 2026| Pages 845-857
https://doi.org/10.1107/S1600576726002384
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