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![[Figure 4]](he5638fig4mag.jpg)
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Figure 4
In the case of data from crystalline samples forming well defined Bragg peaks, the local background in the vicinity of a pixel is estimated as the median of pixel values in a box of side length 2r + 1 either side of the pixel of interest. For small peaks (a), the median of pixels within this box serves as a reasonable blind estimate of the background signal. However, when the peak becomes large compared to the box size (b), a simple median no longer serves to estimate the background alone. For our experiments to date, we have found that the number of pixels in the box should be at least three times the number of pixels in the peak. |
![[Figure 4]](he5638fig4.jpg)
 | JOURNAL OF APPLIED CRYSTALLOGRAPHY |
ISSN: 1600-5767
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