 | Acta Crystallographica Section D Acta Crystallographica Section D BIOLOGICAL CRYSTALLOGRAPHY |
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![[Figure 4]](ba0039fig4mag.jpg)
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Figure 4
FRC, SSNR and Q factor in resolution zones for aligned data sets of images with a signal (test pattern) and normally distributed noise. The data sets contained M = 1000 (dashed lines), 5000 (dotted lines) and 10 000 images (unbroken lines). The left column shows plots for data sets with a signal-to-noise ratio of 1/25, whereas the signal-to-noise ratio is 1/4 in the right column. Panels (g) and (h) show the FRC between the final data set averages and the original test pattern shown in Fig. 2 ![[link]](../../../../../../logos/arrows/d_arr.gif) (a), together with a plot of twice the FRC expected for pure noise (Frank, 1996). The resolution is given in units of pixel−1. |
![[Figure 4]](ba0039fig4.jpg)
| BIOLOGICAL CRYSTALLOGRAPHY |
ISSN: 1399-0047
