Positive and negtive thresholding of scale multiplication

Jin Li Meng, Lin Jin, Quan Pan, Hong Cai Zhang

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

Abstract

In hard thresholding to scale multiplication, it is believed that the signal multiscale product must be positive and the negative correlation between adjacent scales is produced by noise. However, there is still some negative signal correlation between adjacent scales. Here, this phenomenon is deeply analyzed in typical circumstances of two dimensions. On the ground of studying negative signal correlation, we apply two different thresholds to the positive and negative scale multiplication respectively to form a perfect bilateral thresholding scheme. These two thresholds are determined statistically to reduce most of the noise component. Experiments show that the proposed scheme outperforms the traditional thresholding scheme based on scale multiplication.

Original languageEnglish
Title of host publicationProceedings of the 2007 International Conference on Wavelet Analysis and Pattern Recognition, ICWAPR '07
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages897-901
Number of pages5
ISBN (Print)1424410665, 9781424410668
DOIs
StatePublished - 2007
Event2007 International Conference on Wavelet Analysis and Pattern Recognition, ICWAPR '07 - Beijing, China
Duration: 2 Nov 20074 Nov 2007

Publication series

NameProceedings of the 2007 International Conference on Wavelet Analysis and Pattern Recognition, ICWAPR '07
Volume2

Conference

Conference2007 International Conference on Wavelet Analysis and Pattern Recognition, ICWAPR '07
Country/TerritoryChina
CityBeijing
Period2/11/074/11/07

Keywords

  • Bilateral thresholding
  • Denoising
  • Scale multiplication
  • Wavelet transform

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