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Figure 1
X-ray scattering area detector images include numerous regions of missing or untrustworthy data, which must be masked (left image, white regions). A simple inpainting algorithm (from the scikit-image library) fills gaps using interpolation (upper image). This yields poor results because the structure inherent to the scattering data is ignored. We present an algorithm that exploits symmetry analysis to heal images in a `physics-aware' mode (bottom image). By exploiting the symmetry of scattering data, the filled regions connect correctly with the measured data. This algorithm can moreover be used to `extend' the image well beyond the borders of the original detector (bottom right). This highlights the overall structure and symmetry of the original data.

IUCrJ
Volume 4| Part 4| July 2017| Pages 455-465
ISSN: 2052-2525
https://doi.org/10.1107/S2052252517006212