Results 61 to 70 of about 84,950 (295)
The Insight Journal, 2006 A common usage when working with Fourier transform is to shift the the image to put the zero-frequency component in the center of the image. This contribution comes with a filter to perform this transform.
openaire +2 more sources
Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying
Advanced Engineering Materials, EarlyView.An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara +8 more
wiley +1 more source
FFT-based estimation of large motions in images: a robust gradient-based approach
, 2013 A fast and robust gradient-based motion estimation technique which operates in the frequency domain is presented. The algorithm combines the natural advantages of a good feature selection offered by gradient-based methods with the robustness and speed ...
V. Argyriou (17259058) +2 more
core +5 more sources
Green-FFT model for 3D contacts considering microstructure and defects
Mechanics & IndustryPhysical phenomena at various scales are involved in energy dissipation and material degradation induced by mechanical contacts. Stress computation at the microstructural level is particularly valuable for the study of rolling contact fatigue or wear ...
Fourel Lucas +4 more
doaj +1 more source
A machine sound monitoring for predictive maintenance focusing on very low frequency band
SICE Journal of Control, Measurement, and System Integration, 2021 The monitoring of machines is one of key issues in the Industry 4.0 era. Particularly, the monitoring realized by non-contact sensors is drawing attention since it is easy to install and to avoid any problems caused by sensors accidentally dropping down ...
Kazuki Tsuji +5 more
doaj +1 more source
Drvna Industrija, 2022 The article presents theoretical analysis of machined surface roughness after sawing on circular saw and implementation of fast Fourier transform (FFT) as a possible simple filtering method for filtering out just the saw blade and saw tooth influence on ...
Igor Đukić +3 more
doaj +1 more source
FFT-based Inverse Homogenization for Cellular Material Design
, 2022 Besides constituting components, the properties of composites are highly relevant to their microstructures. The work proposed a fast Fourier transform (FFT)-based inverse homogenization method implemented by the bi-directional evolutionary structural ...
Zeyao Chen (17745288) +4 more
core
Advanced Engineering Materials, EarlyView.CT‐based finite element simulations combined with in situ X‐ray computed tomography are used to analyze insert pull‐out in nickel‐coated polymer foams. Despite variations in material parameters, deformation consistently concentrates within a narrow annular region around the insert.
Yannik Bautz +4 more
wiley +1 more source
Impact of Noise on Fault Classification in High-Voltage Transmission Lines Using LVQ Neural Networks
Emitor: Jurnal Teknik ElektroAccurate fault detection and classification in high-voltage transmission lines are essential to ensure system reliability and operational safety. However, the presence of noise and transient disturbances often degrades the accuracy of conventional ...
Marta Hardiyanti Mursat +2 more
doaj +1 more source
FFT Consolidated Feature Space Methods for Image Ｒepresentation
Journal of Harbin University of Science and Technology, 2020 Fast Fourier Transform ( FFT) method has been widely used in image recognition. However，FFTmethod faces some challenges，such as occlusion of different angles，varying lighting and changeable facial expression. We combine fast Fourier transform and feature
SUN Ling +5 more
doaj +1 more source