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A New Phase Consistency Criterion and Its Application in Electron Crystallography by Wanzhong He; José-Marı́a Carazo; José-Jesús Fernández is a Physics and Astronomy article available to read on EtoBox.

What is A New Phase Consistency Criterion and Its Application in Electron Crystallography about?

In this work, we present the principles and potential advantages of a methodology to assess Fourier components in terms of phase consistency. We de®ne a new phase consistency criterion among sets of spatially translated images based upon a novel conception of the spatial shift property of the Fourier transform. The article shows how this criterion can be used in the alignment stage of the 3D reconstruction process with a two-fold objective: Assessment of the frequency components and robustness in the alignment. In that sense, the article shows and analyzes the results obtained from the application of the new index of quality in the context of projection image alignment. We have focussed our attention on the electron crystallography ®eld, by applying such a phase consistency de®nition over image re ̄ections. The results that have been obtained show that the new phase-consistency de®nition may complement the traditional SNR-based index of quality (commonly known as IQ) of re ̄ections. As a consequence, the reliability of the alignment may be improved by discarding those re ̄ections judged as non-reliable according to the phase-consistency criterion.

Who reads A New Phase Consistency Criterion and Its Application in Electron Crystallography?

Author

Wanzhong He; José-Marı́a Carazo; José-Jesús Fernández

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0304-3991)

Published

2000

Language

EN

Field

Physics and Astronomy (Physical Sciences)