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Figure 5
Example of the optimization of the scan grid trajectory of a ptychographic scan of 4 µm × 4 µm using the optimization open-source software OR Tools by Google. Two different metrics are compared. (a) The typical scan grid composed of concentric circles truncated at the border to fit into a rectangular region. Such a grid prevents the raster grid pathology of ptychography. (b) Optimized trajectory using Euclidean metrics. (c) Optimized trajectory using Chebyshev metrics, which favors diagonal movements. The starting point is indicated by a blue triangle and the ending point is indicated by a green square.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 26| Part 5| September 2019| Pages 1751-1762
https://doi.org/10.1107/S1600577519006301
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