Biomedical Imaging GroupSTI
English only   BIG > Publications > Spectral Signal-To-Noise Ratio

 Home Page
 News & Events
 Tutorials and Reviews
 Download Algorithms

 All BibTeX References

A New Resolution Criterion Based on Spectral Signal-To-Noise Ratios

M. Unser, B.L. Trus, A.C. Steven

Ultramicroscopy, vol. 23, no. 1, pp. 39-51, 1987.

A new criterion for the 'useful' resolution of electron micrographs of macromolecular particles is introduced. This criterion is based on estimation of the spatial frequency limit beyond which the spectral signal-to-noise ratio (SSNR) falls below an acceptable baseline. Applicable to both periodic and aperiodic specimens, the approach is particularly apposite for sets of correlation-averaged images. It represents a straightforward and intuitively appealing generalization of the traditional method of estimating the resolution of crystalline specimens from the spectral ranges of periodic reflections in their diffraction patterns. This method allows one to assess how closely the resolution of an averaged image based on N individual images approaches the ultimate resolution obtained from an indefinitely large number of statistically equivalent images. Inter-relationships between the SSNR and two other measures of resolution, the differential phase residual and the Fourier ring correlation coefficient, are discussed, and their properties compared.

AUTHOR="Unser, M. and Trus, B.L. and Steven, A.C.",
TITLE="A New Resolution Criterion Based on Spectral Signal-To-Noise

© 1987 Ultramicroscopy. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from Ultramicroscopy.
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.