Three-dimensional stacked filter (3DSF): a nonlinear filter for series images of TEM

Siyuan Huang, Hai Li, Chuanhong Jin, Xinghua Li, Jianglin Wang, Xin Cai, Yu Han, Fang Lin

Research output: Contribution to journalArticlepeer-review

Abstract

Denoising is a key issue for quantitative high-resolution transmission electron microscopy (HRTEM) and its roles become more critical for applications in beam-sensitive materials and dynamic characterizations where the attainable signal-to-noise ratio (SNR) of HRTEM images is often limited. In this article, we introduce a novel nonlinear filter where a series of HRTEM images is stacked into a 3D data cube and then treated with Wiener filter in 3D domain with suitable fitting parameters. Comparing to the frequently used Winer filter that was performed for each individual image, this novel filter, denoted as 3DSF, exhibits higher SNR, less artifacts, and more computation efficiency, which works particularly well for TEM images comprising of periodic information and feature similarities in sequent micrographs within the 3D data cube. Application of this novel 3DSF is further demonstrated in a few examples that includes to capture the defect dynamics in graphene and elegant structure of MOFs.
Original languageEnglish (US)
Pages (from-to)113560
JournalUltramicroscopy
DOIs
StatePublished - May 23 2022

ASJC Scopus subject areas

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

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