Results 101 to 110 of about 2,599 (188)

GPR data noise attenuation based on the Shearlet transform

open access: yes矿业科学学报, 2017
When using ground penetrating radar(GPR) to detect the underground target distribution, valid signal in receiving data tend to be susceptible to noise and the interference of air-ground waves, which will affect the accuracy of target recognition and ...
Zheng Jing   +4 more
doaj  

Multi-Focus Image Fusion Algorithm in Sensor Networks

open access: yesIEEE Access, 2018
Most imaging systems have a limited depth-of-field in the sensor networks that consist of multiple visual sensors. Due to different object distances, not every object can be clearly imaged by a single sensor.
Ying Tong, Jin Chen
doaj   +1 more source

Facial Expression Recognition Based on Discrete Separable Shearlet Transform and Feature Selection

open access: yesAlgorithms, 2018
In this paper, a novel approach to facial expression recognition based on the discrete separable shearlet transform (DSST) and normalized mutual information feature selection is proposed. The approach can be divided into five steps.
Yang Lu, Shigang Wang, Wenting Zhao
doaj   +1 more source

A unified comparative framework for multiscale geometric transforms in SAR and multispectral satellite image analysis

open access: yesFrontiers in Remote Sensing
Satellite image analysis is essential for remote sensing analysis. Two types of data are captured via satellite: Synthetic Aperture Radar (SAR) imagery (which has structure) and multispectral imagery (which contains spectral information), so ...
Sai Bhargav Kasetty, Rajakumar Krishnan
doaj   +1 more source

Radon transform intertwines shearlets and wavelets

open access: yes, 2017
26 pages, 1 ...
Bartolucci, Francesca   +2 more
openaire   +2 more sources

Enhanced Offshore Wind Farm Geophysical Surveys: Shearlet-Sparse Regularization in Multi-Channel Predictive Deconvolution

open access: yesRemote Sensing
This study introduces a novel multi-channel predictive deconvolution method enhanced by Shearlet-based sparse regularization, aimed at improving the accuracy and stability of subsurface seismic imaging, particularly in offshore wind farm site assessments.
Yang Zhang   +5 more
doaj   +1 more source

Comparing Undecimated Wavelet, Nonsubsampled Contourlet and Shearlet for Sar Images Despeckling

open access: yesMajlesi Journal of Electrical Engineering
Synthetic Aperture Radar (SAR) images suffer of multiplicative speckle noise, which damages the radiometric resolution of SAR images and makes the data interpretation difficult.
Saeed Jafari   +2 more
doaj  

A New Shearlet Framework for Image Denoising

open access: yesIranian Journal of Electrical and Electronic Engineering, 2016
Traditional noise removal methods like Non-Local Means create spurious boundaries inside regular zones. Visushrink removes too many coefficients and yields recovered images that are overly smoothed.
E. Ehsaeyan
doaj  

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