Wiener-filter enhancement of noisy HREM images

L. D. Marks*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

67 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 languageEnglish (US)
Pages (from-to)43-52
Number of pages10
JournalUltramicroscopy
Volume62
Issue number1-2
DOIs
StatePublished - Jan 1996

ASJC Scopus subject areas

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

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