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Application of threshold estimation for terahertz digital holography image denoising based on stationary wavelet transform

  • Shan Shan Cui
  • , Qi Li
  • , Xue Ma
  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Terahertz digital holography imaging technology is one of the hot topics in imaging domain, and it has drawn more and more public attention. Owing to the redundancy and translation invariance of the stationary wavelet transform, it has significant application in image denoising, and the threshold selection has a great influence on denoising. The denoising researches based on stationary wavelet transform are performed on the real terahertz image, with Bayesian estimation and Birge-Massart strategy applied to evaluate the threshold. The experimental results reveal that, Bayesian estimation combined with homomorphic stationary wavelet transform manifests the optimal denoising effect at 3 decomposition levels, which improves the signal-to-noise and preserves the image detail information simultaneously.

Original languageEnglish
Title of host publicationSelected Papers of the Photoelectronic Technology Committee Conferences held June-July 2015
EditorsDaren Lv, Lijun Wang, Libin Xiang, Michael I. Petelin, Guangjin Zhang, Songlin Zhuang, Shenggang Liu
PublisherSPIE
ISBN (Electronic)9781628418804
DOIs
StatePublished - 2015
EventInternational Conference on Frontiers in International Conference on Frontiers in Terahertz Technology and Applications, and the International Symposium on Surface Topography and Optical Microscopy - Harbin, China
Duration: 23 Jul 201525 Jul 2015

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9795
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceInternational Conference on Frontiers in International Conference on Frontiers in Terahertz Technology and Applications, and the International Symposium on Surface Topography and Optical Microscopy
Country/TerritoryChina
CityHarbin
Period23/07/1525/07/15

Keywords

  • Digital holography
  • Stationary wavelet transform
  • Terahertz imaging
  • Threshold estimation

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