Wiener-filter enhancement of noisy HREM images

L. D. Marks

doi:10.1016/0304-3991(95)00085-2

Wiener-filter enhancement of noisy HREM images

L. D. Marks^*

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

85 Scopus citations

Abstract

The use of Wiener filters to restore noisy HREM images is discussed, exploiting the fact that the noise spectrum can be rather simply estimated. Conventional Wiener, Cannon, parametric versions of these and a random-phase form are found to be very effective. Quantitative analysis indicates that the signal-to-noise ratio is improved by a factor of 3-7, with better results for larger pictures. Such filtering techniques should have rather wide applicability in electron microscopy, and could be applied on-line with TV systems.

Original language	English (US)
Pages (from-to)	43-52
Number of pages	10
Journal	Ultramicroscopy
Volume	62
Issue number	1-2
DOIs	https://doi.org/10.1016/0304-3991(95)00085-2
State	Published - Jan 1996

Funding

I would like to acknowledge the support of the National Science Foundation on grant number DMR-9214505 in supporting this research. I would also like to thank my studentsf or testing these filters on their experimentali mages.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Atomic and Molecular Physics, and Optics

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10.1016/0304-3991(95)00085-2

Cite this

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abstract = "The use of Wiener filters to restore noisy HREM images is discussed, exploiting the fact that the noise spectrum can be rather simply estimated. Conventional Wiener, Cannon, parametric versions of these and a random-phase form are found to be very effective. Quantitative analysis indicates that the signal-to-noise ratio is improved by a factor of 3-7, with better results for larger pictures. Such filtering techniques should have rather wide applicability in electron microscopy, and could be applied on-line with TV systems.",

author = "Marks, {L. D.}",

note = "Funding Information: I would like to acknowledge the support of the National Science Foundation on grant number DMR-9214505 in supporting this research. I would also like to thank my studentsf or testing these filters on their experimentali mages.",

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N2 - The use of Wiener filters to restore noisy HREM images is discussed, exploiting the fact that the noise spectrum can be rather simply estimated. Conventional Wiener, Cannon, parametric versions of these and a random-phase form are found to be very effective. Quantitative analysis indicates that the signal-to-noise ratio is improved by a factor of 3-7, with better results for larger pictures. Such filtering techniques should have rather wide applicability in electron microscopy, and could be applied on-line with TV systems.

AB - The use of Wiener filters to restore noisy HREM images is discussed, exploiting the fact that the noise spectrum can be rather simply estimated. Conventional Wiener, Cannon, parametric versions of these and a random-phase form are found to be very effective. Quantitative analysis indicates that the signal-to-noise ratio is improved by a factor of 3-7, with better results for larger pictures. Such filtering techniques should have rather wide applicability in electron microscopy, and could be applied on-line with TV systems.

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Wiener-filter enhancement of noisy HREM images

Abstract

Funding

ASJC Scopus subject areas

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