Results 41 to 50 of about 179 (123)

Cyber-Resilient Detection of Power Quality Events With NSCT and PCA-SVM

open access: yesIEEE Access
The increasing reliance on smart grids, coupled with the integration of renewable energy and growing cyber-physical interactions, has heightened the vulnerability of power systems to both power quality (PQ) disturbances and cyber-attacks.
Sayanti Chatterjee   +7 more
doaj   +1 more source

Image Edge Detection Based on Gaussian Mixture Model in Nonsubsampled Contourlet Domain

open access: yesJournal of Electrical and Computer Engineering, 2016
In order to get accurate location and continuous edges, Gaussian mixture model and local direction modulus nonmaxima suppression are used in high frequency subbands of nonsubsampled Contourlet transform.
Li Yang, Chang Xia, Chang Juan
doaj   +1 more source

Unsupervised Change Detection Using Ground-based Radar Image

open access: yesLeida xuebao, 2020
Ground-based radar is a microwave remote sensing imaging technology that has been gradually developed throughout the past 20 years so that it has become mature. At present, it has been widely used in monitoring geological disasters such as landslides and
HUANG Pingping   +5 more
doaj   +1 more source

Image steganography based on nonsubsampled Contourlet transform and Hill cipher

open access: yesDianxin kexue, 2016
A novel image steganography was proposed,which was based on nonsubsampled Contourlet transform (NSCT)and Hill cipher.Firstly,cover image was decomposed with NSCT.It provided a multi-scale and multi-directional representation of an image.One of subbands ...
Shuliang SUN
doaj   +2 more sources

Hybrid Multi-Scale Medical Image Fusion Based on Structural Similarity Optimization [PDF]

open access: yesJisuanji gongcheng
Existing multi-modal medical image fusion methods suffer from incomplete preservation of structural information and phase features. Therefore, this study proposes a medical image fusion method based on hybrid multi-scale decomposition and local structure
Yunhang LI, Qing PAN, Nili TIAN
doaj   +1 more source

Remote Sensing Image Change Detection Based on NSCT-HMT Model and Its Application

open access: yesSensors, 2017
Traditional image change detection based on a non-subsampled contourlet transform always ignores the neighborhood information’s relationship to the non-subsampled contourlet coefficients, and the detection results are susceptible to noise interference ...
Pengyun Chen   +4 more
doaj   +1 more source

Local Feature Descriptor Based on Nonsubsampled Contourlet Transform Domain

open access: yes工程科学与技术, 2015
:In order to obtain the robust local feature descriptor, a local feature descriptor based on nonsubsampled contourlet transform (NSCT) domain was proposed, which does not need to estimate the main direction in the construction process.
颜普, 梁栋, 朱明, 唐俊
doaj  

NSCT BASED LOCAL ENHANCEMENT FOR ACTIVE CONTOUR BASED IMAGE SEGMENTATION APPLICATION [PDF]

open access: yesICTACT Journal on Image and Video Processing, 2010
Because of cross-disciplinary nature, Active Contour modeling techniques have been utilized extensively for the image segmentation. In traditional active contour based segmentation techniques based on level set methods, the energy functions are defined ...
Hiren Mewada, Suprava Patnaik
doaj  

Robust Video Watermark Algorithm Based on NSCT-PHFM [PDF]

open access: yesJisuanji gongcheng
With the widespread use of short video sharing platforms and editing software, video copyright have become an urgent issue that needs to be addressed. To overcome this problem, robust video-watermarking methods have been proposed.
TIAN Shuangyan, CHEN Yanli, ZHOU Yonghui
doaj   +1 more source

Design of a High-Speed Pavement Image Acquisition System Based on Binocular Vision

open access: yesApplied System Innovation
The acquisition of images of road surfaces not only establishes a theoretical foundation for road maintenance by relevant departments but also is instrumental in ensuring the safe operation of highway transportation systems. To address the limitations of
Ruipeng Gao   +4 more
doaj   +1 more source

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