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Figure 3
(a) Illustration of groups (foreground pixels), regions and backgrounds with corresponding mathematical notations. The innermost solid boundaries represent the union of groups, the next boundaries (black, orange fill) represent the regions, and the outermost boundaries (pink) represent the union of regions and region backgrounds. (b) Overlay showing distributions of Fe (red), Mn (green), Zn (blue) and the region boundaries (white). Note that (a) illustrates a [\Delta] = 2 pixel distance; we use a [\Delta] = 5 pixel distance for both group and region background estimation in our experiments.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 21| Part 3| May 2014| Pages 568-579
https://doi.org/10.1107/S1600577514001416
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