31 October 1997 Phase retrieval from undersampled intensity data
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An algorithm is described for incorporating symmetry information into reconstruction of an image from the amplitude of its Fourier transform. The symmetry is used to compensate for the loss of information due to sampling of the Fourier amplitude below the Nyquist density. The study is motivated by an image reconstruction problem in x-ray crystallography. Application of the algorithm to a simulated crystallographic problem shows that it converges to the correct solution, with no initial phase information, where algorithms currently used in crystallography fail. The results lend support to the possibility of ab initio phase retrieval in macromolecular crystallography when sufficient ta priori information is available.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Rick P. Millane, Rick P. Millane, W. J. Stroud, W. J. Stroud, } "Phase retrieval from undersampled intensity data", Proc. SPIE 3170, Image Reconstruction and Restoration II, (31 October 1997); doi: 10.1117/12.292820; https://doi.org/10.1117/12.292820


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