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Figure 1
(a) A Fourier magnitude profile as a function of the spatial frequency, calculated from a simulated noisy diffraction pattern. The overlaid error bars (gray) indicate the signal variation due to Poisson noise. The inset shows the signal-to-noise ratio of this Fourier magnitude profile, highlighting the corruption of high-frequency information by noise. (b) Line profiles of the Gaussian filter functions, evaluated for ten different values of α, implemented in each of the ten steps of the OSS algorithm. The parameter α is linearly changed from a value of the order of N in step 1 to 1/N in step 10.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 46| Part 2| February 2013| Pages 312-318
doi:10.1107/S0021889813002471
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