Applications of windowed Fourier fringe analysis in optical measurement: a review
Q Kemao - Optics and Lasers in Engineering, 2015 - Elsevier
The applications of windowed Fourier fringe analysis in the past decade are reviewed.
Because fringe patterns from different optical measurement systems are similar, the …
Because fringe patterns from different optical measurement systems are similar, the …
Two-dimensional windowed Fourier transform for fringe pattern analysis: principles, applications and implementations
Q Kemao - Optics and Lasers in Engineering, 2007 - Elsevier
Fringe patterns from optical metrology systems need to be demodulated to get the desired
parameters. Two-dimensional windowed Fourier transform is chosen for the determination of …
parameters. Two-dimensional windowed Fourier transform is chosen for the determination of …
Automatic inspection system of surface defects on optical IR-CUT filter based on machine vision
Y Liu, F Yu - Optics and Lasers in Engineering, 2014 - Elsevier
The paper presents an automatic surface defects inspection system for optical Infrared Cut-
off (IR-CUT) filter, which is applied in all kinds of color cameras and video devices. The …
off (IR-CUT) filter, which is applied in all kinds of color cameras and video devices. The …
Subspace analysis based machine learning method for automated defect detection from fringe patterns
We propose a reliable and robust defect detection method from the noisy fringe patterns
obtained in optical interferometry. The proposed method relies on a naive Bayes classifier …
obtained in optical interferometry. The proposed method relies on a naive Bayes classifier …
High-speed videography of transparent media using illumination-based multiplexed schlieren
S Ek, V Kornienko, A Roth, E Berrocal… - Scientific Reports, 2022 - nature.com
Schlieren photography is widely used for visualizing phenomena within transparent media.
The technique, which comes in a variety of configurations, is based on detecting or …
The technique, which comes in a variety of configurations, is based on detecting or …
Millimeter-wave tomographic imaging of composite materials based on phase evaluation
D Meier, T Schwarze, T Link, C Zech… - IEEE Transactions …, 2019 - ieeexplore.ieee.org
A novel data processing algorithm for the generation of tomographic images of composite
materials, based on measurements acquired via frequency-modulated continuous-wave …
materials, based on measurements acquired via frequency-modulated continuous-wave …
Automated defect identification from carrier fringe patterns using Wigner–Ville distribution and a machine learning-based method
The paper presents a method for automated defect identification from fringe patterns. The
method relies on computing the fringe signal's Wigner–Ville distribution followed by a …
method relies on computing the fringe signal's Wigner–Ville distribution followed by a …
Deep learning assisted non-contact defect identification method using diffraction phase microscopy
SK Narayan, AVS Vithin, R Gannavarpu - Applied Optics, 2023 - opg.optica.org
Reliable detection of defects from optical fringe patterns is a crucial problem in non-
destructive optical interferometric metrology. In this work, we propose a deep-learning …
destructive optical interferometric metrology. In this work, we propose a deep-learning …
Defect detection using windowed Fourier spectrum analysis in diffraction phase microscopy
S Ajithaprasad, R Velpula… - Journal of Physics …, 2019 - iopscience.iop.org
This paper introduces a technique to identify defects from fringe patterns for optical non-
destructive testing and metrology. The technique relies on computation of the windowed …
destructive testing and metrology. The technique relies on computation of the windowed …
Quantitative flow visualization by hidden grid background oriented schlieren
The paper introduces hidden grid background oriented schlieren for quantitative study and
visualization of natural convection heat transfer. In this technique, the refractive index …
visualization of natural convection heat transfer. In this technique, the refractive index …