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Figure 3
(a) R factor (RF) as a function of the noise levels for the reconstruction of the Lena model. Although ER–HIO has the smallest RF, this does not mean that ER–HIO produces the best reconstruction. As ER sets the electron density outside a support to zero during iterations, the calculation of RF is dominated by the low spatial frequency of the Fourier magnitudes. (b) Rreal (the difference between the final reconstruction and the Lena model) as a function of the noise levels. These simulation results indicate that OSS produces the best reconstructions among the four algorithms at all noise levels.

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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