# Noise reduction of electron holography observations for a thin-foiled Nd-Fe-B specimen using the wavelet hidden Markov model

https://mdr.nims.go.jp/datasets/8d4e70a1-8ba5-4045-9cbc-5b298bdcaaac

## File

- [Final draft_Applied Microscopy.docx](https://mdr.nims.go.jp/filesets/b4ab97d4-a533-4893-ada9-e205d237ca64/download) ([Detail](https://mdr.nims.go.jp/filesets/b4ab97d4-a533-4893-ada9-e205d237ca64.md))

## Id

8d4e70a1-8ba5-4045-9cbc-5b298bdcaaac

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-12-30T05:55:08.834667Z

## Updated at

2025-01-06T23:30:37.950729Z

## Published at

2025-01-06T23:30:48.514692Z

## Doi

https://doi.org/10.48505/nims.5240

## First published url

https://doi.org/10.1186/s42649-024-00097-w

## Date published

2024-04-17

## Recorded date published



## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Noise reduction of electron holography observations for a thin-foiled Nd-Fe-B
    specimen using the wavelet hidden Markov model
  title_type: original
  lang: en

## Description

- description: In this study, we investigate the effectiveness of noise reduction
    in electron holography, based on the wavelet hidden Markov model (WHMM), which
    allows for the reasonable separation of weak signals from noise. Electron holography
    observations from a Nd2Fe14B thin foil showed that the noise reduction method
    suppressed artificial phase discontinuities generated by phase retrieval. From
    the peak signal-to-noise ratio, it was seen that the impact of denoising was significant
    for observations with a narrow spacing of interference fringes, which is a key
    parameter for the spatial resolution of electron holography. These results provide
    essential information for improving the precision of electron holography studies.
  description_type: abstract
  lang: und

## Creator

- name: Sujin Lee
  role: author
- name: Yoshihiro Midoh
  role: author
- name: Yuto Tomita
  role: author
- name: Takehiro Tamaoka
  role: author
- name: Mitsunari Auchi
  role: author
- name: Taisuke Sasaki
  role: author
  orcid: https://orcid.org/0000-0002-5952-7638
  organization: National Institute for Materials Science
- name: Yasukazu Murakami
  role: author

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Noise reduction
  schema: not_defined
- subject: Wavelet hidden Markov model
  schema: not_defined
- subject: Electron holography
  schema: not_defined
- subject: Nd-Fe- B magnet
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Applied Microscopy
  issn: '22874445'
  volume: '54'
  issue: '1'
  article_number: '4'

## Conference



## Related item



## Funding

- identifier: 21H04623
  funder_name: Japan Society for the Promotion of Science
- identifier: 22K18904
  funder_name: Japan Society for the Promotion of Science

## Instrument



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## Measurement method



## Specimen



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## Fileset

- id: b4ab97d4-a533-4893-ada9-e205d237ca64
  filename: Final draft_Applied Microscopy.docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 3786148
  md5: 1d3f9191f12ba5801206d59da92fa1b0

## Thumbnail

fileset_id: b4ab97d4-a533-4893-ada9-e205d237ca64
filename: Final draft_Applied Microscopy.docx