Results 151 to 160 of about 46,600 (175)

Accurate and efficient extraction of fringe orientation from the poor-quality ESPI fringe pattern with a convolutional neural network.

Applied Optics, 2019
The fringe orientation is an important feature of the electronic speckle interferometry (ESPI) fringe pattern. Accurate and efficient calculation of the fringe orientation is very important for subsequent electronic speckle processing such as skeleton ...
Lulu Tian, Chen Tang, Min Xu, Z. Lei
semanticscholar   +1 more source

Denoising for variable density ESPI fringes in nondestructive testing by an adaptive multiscale morphological filter based on local mean.

Applied Optics, 2019
Analysis of speckle images with variable density fringes is a challenging task when electronic speckle pattern interferometry (ESPI) is used for nondestructive testing of defects.
Ning Wei, Jianhong Yang, Ruixue Liu
semanticscholar   +1 more source

Fuzzy c-means clustering based segmentation and the filtering method for discontinuous ESPI fringe patterns.

Applied Optics, 2019
The filtering of ESPI fringe patterns with both noise and discontinuity is a challenging problem raised in recent years. Discontinuity-detectable and discontinuity-aware processing techniques are demanded.
Wenjun Xu, Chen Tang, Min Xu, Z. Lei
semanticscholar   +1 more source

Quasi single-frame measurements with phase-stepped ESPI

Optics and lasers in engineering, 2019
Phase-stepped ESPI measurement techniques typically require the acquisition of sets of speckle images before and after specimen deformation. This process limits the use of the technique to quasi-static specimens.
Harsh Pokharna, G. Schajer
semanticscholar   +1 more source

ESPI Images Denoising Based on Improved Total Variation

International Conference on Advanced Infocomm Technology, 2019
Image denoising is a key step for image processing. The real electronic speckle pattern interference (ESPI) fringe pattern contains massive speckle noise, which can affect the image quality. To solve the problem of staircase effect and reduce the speckle
Ying Xing, Huamei Xin, Cancan Wu
semanticscholar   +1 more source

PU-M-Net for phase unwrapping with speckle reduction and structure protection in ESPI

Optics and lasers in engineering, 2022
Min Xu, Chen Tang, Yuxin Shen, Nian Hong, Z. Lei   +4 more
semanticscholar   +1 more source

Batch skeleton extraction from ESPI fringe patterns using pix2pix conditional generative adversarial network

Optical Review, 2022
Huaying Wang, Zijian Zhang, Qiaofen Zhu, Xue Wang, Zhao Dong, G. Men, Jieyu Wang, Jialiang Lei, Wenjian Wang   +8 more
semanticscholar   +1 more source

MDD-Net: A generalized network for speckle removal with structure protection and shape preservation for various kinds of ESPI fringe patterns

Optics and lasers in engineering, 2022
Min Xu, Chen Tang, Nian Hong, Z. Lei
semanticscholar   +1 more source

Experimental and numerical analysis of the residual stress distribution in a three-point bending test of a TRIP sheet by using ESPI

Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2020
Alan E. Díaz-Mendoza, G. Capilla-González, Israel Martínez-Ramírez, M. Gutiérrez-Rivera, David Díaz-Infante, Ismael Ruíz-López   +5 more
semanticscholar   +1 more source

Speckle removal in variable density ESPI fringe patterns with TGV–Hilbert–Shearlet algorithm

, 2020
Shengjian Huang, Chen Tang, Min Xu, Z. Lei   +3 more
semanticscholar   +1 more source