We study two methods of micrograph processing in cryoelectron microscopy: the defocus-gradient corrected back-projection algorithm and the correction of micrographs for the contrast transfer function based on the frequency-distance relation. Analyzing integral images produced by the methods we conclude that they are asymptotically equivalent within the framework of stationary phase approximation.
Biomedical Imaging: From Nano To Macro, 2008, p. 133-136
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5th IEEE International Symposium on Biomedical Imaging, 2008