Results 41 to 50 of about 538 (196)
Security and Communication Networks, Volume 2022, Issue 1, 2022., 2022 With the rapid spread of network information, the information maintenance has become the focus of information security on networks. Digital watermarking is one of the effective methods to protect information security, achieve anticounterfeiting traceability, and protect copyright, and it is an important branch of information hiding technology. However,
Ling Zhou +5 more
wiley +1 more source
Nonsubsampled contourlet transform based tone mapping operator to optimize the dynamic range of diatom shells [PDF]
, 2021 18 pags., 6 figs., 4 tabs.The diatoms have intricate silica-based cell walls with multi scale patterns. High Dynamic Range (HDR) imaging is widely used to examine the 3D structure of diatoms for recover ing the wide range of contrast and brightness.
Bueno, Gloria +10 more
core +1 more source
An NSCT Image Denoising Method Based on Genetic Algorithm to Optimize the Threshold
Mobile Information Systems, Volume 2022, Issue 1, 2022., 2022 In order to solve the defect that the threshold value of the NSCT transform method is too large or the real signal coefficients are directly lost during image denoising, an adaptive threshold method of genetic algorithm is used to optimize the NSCT image denoising method. The genetic algorithm is used to generate the initial population, and the genetic
Zeliang Zhang +7 more
wiley +1 more source
Toward reduction of artifacts in fused images [PDF]
, 2011 Most fusion satellite image methodologies at pixel-level introduce false spatial details, i.e.artifacts, in the resulting fusedimages. In many cases, these artifacts appears because image fusion methods do not consider the differences in roughness or ...
Lagos, Octavio +5 more
core +2 more sources
Nonsubsampled Contourlet Transform Based Classification of Microcalcification in Digital Mammograms [PDF]
, 2012 In this paper, an algorithm for the classification of microcalcification in digital mammograms using Nonsubsampled Contourlet Transform (NSCT) and Support Vector Machine (SVM) is presented.
Baskaran, S. +2 more
core +1 more source
Multisensor image fusion approach utilizing hybrid pre-enhancement and double nonsubsampled contourlet transform [PDF]
, 2017 A multisensor image fusion approach established on the hybrid-domain image enhancement and double nonsubsampled contourlet transform (NSCT) is proposed.
Maldague, X. (Xavier), Zhang, Qiong
core +1 more source
Improvement of Breast Cancer Detection Using Non-subsampled Contourlet Transform and Super-Resolution Technique in Mammographic Images [PDF]
Iranian Journal of Medical Physics, 2015 Introduction Breast cancer is one of the most life-threatening conditions among women. Early detection of this disease is the only way to reduce the associated mortality rate.
Fatemeh Pak, Hamidreza Rashidy Kanan
doaj +3 more sources
IEEE Access, 2022 This paper presents a pansharpening technique based on the non-subsampled contourlet transform (NSCT) and convolutional autoencoder (CAE). NSCT is exceptionally proficient at presenting orientation information and capturing the internal geometry of ...
Ahmad Al Smadi +4 more
doaj +1 more source
A NOVEL FUSION-BASED UNSUPERVISED APPROACH FOR MULTISPECTRAL IMAGE CHANGE DETECTION WITH SALIENCY MAPS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 To fully utilize the spectral information and remove noise in multispectral image change detection, A fusion-based unsupervised approach, which exploits NSCT (Nonsubsampled Contourlet Transform) and multi-scale saliency maps for detecting changed areas ...
A. Zhang +4 more
doaj +1 more source
The NSCT-HMT Model of Remote Sensing Image Based on Gaussian-Cauchy Mixture Distribution
IEEE Access, 2018 The nonsubsampled Contourlet transform (NSCT) not only retains the characteristics of Contourlet transform, but also has the good characteristic of shift-invariance, which plays a significant role in denoising, fusion, and segmentation of texture-rich ...
Xianghai Wang +3 more
doaj +1 more source