Results 101 to 110 of about 1,095 (204)

Γ-convergence of a shearlet-based Ginzburg–Landau energy

open access: yes, 2020
We introduce two shearlet-based Ginzburg–Landau energies, based on the continuous and the discrete shearlet transform. The energies result from replacing the elastic energy term of a classical Ginzburg–Landau energy by the weighted -norm of a shearlet ...
Petersen, PC, Süli, Endre
core   +2 more sources

Inhomogeneous shearlet coorbit spaces

open access: yes, 2018
In this paper, we establish inhomogeneous coorbit spaces related to the continuous shearlet transform and the weighted Lebesgue spaces [Formula: see text] for certain weights [Formula: see text].
Lukas Sawatzki, Fabian Feise
core   +1 more source

High-Resolution Reflected Wave Extraction and Imaging Enhancement for Array Acoustic Logging

open access: yesCejing jishu
Array acoustic logging reflected wave imaging is an important technology to detect the geological structure and characteristics around the wellbore, especially in the evaluation of fracture-vuggy carbonate rocks and unconventional heterogeneous reservoir.
YUE Wenzheng   +3 more
doaj   +1 more source

Efficient multiscale and multidirectional representation of 3D Data using the 3D discrete shearlet transform

open access: yes, 2011
In recent years, there has been a lot of interest in multiresolution representations that also perform a multidirectional analysis. These representations often yield very sparse representation for multidimensional data. The shearlet representation, which
Van De Ville, Dimitrieditor   +7 more
core   +2 more sources

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

Analysis of Singularities and Edge Detection using the Shearlet Transform

open access: yes, 2009
The continuous curvelet and shearlet transforms have recently been shown to be much more effective than the traditional wavelet transform in dealing with the set of discontinuities of functions and distributions.
Kanghui Guo   +2 more
core  

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