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3 Results Found

  • Article
  • Open Access
16 Citations
4,142 Views
14 Pages

An Adaptive and Secure Holographic Image Watermarking Scheme

  • Chuying Yu,
  • Xiaowei Li,
  • Xinan Chen and
  • Jianzhong Li

2 May 2019

A novel adaptive secure holographic image watermarking method in the sharp frequency localized contourlet transform (SFLCT) domain is presented. Based upon the sine logistic modulation map and the logistic map, we develop an encrypted binary computer...

(This article belongs to the Special Issue Entropy Based Data Hiding)
  • Article
  • Open Access
51 Citations
7,600 Views
18 Pages

Nonparametric Denoising Methods Based on Contourlet Transform with Sharp Frequency Localization: Application to Low Exposure Time Electron Microscopy Images

  • Soumia Sid Ahmed,
  • Zoubeida Messali,
  • Abdeldjalil Ouahabi,
  • Sylvain Trepout and ,
  • Cedric Messaoudi and
  • Sergio Marco
  • + 1 author+ 0 author

20 May 2015

Image denoising is a very important step in cryo-transmission electron microscopy (cryo-TEM) and the energy filtering TEM images before the 3D tomography reconstruction, as it addresses the problem of high noise in these images, that leads to a loss...

  • Article
  • Open Access
49 Citations
4,587 Views
16 Pages

21 November 2019

In multi-modality image fusion, source image decomposition, such as multi-scale transform (MST), is a necessary step and also widely used. However, when MST is directly used to decompose source images into high- and low-frequency components, the corr...

(This article belongs to the Special Issue Entropy-Based Algorithms for Signal Processing)