Zobrazeno 1 - 10
of 105
pro vyhledávání: '"SI Shuchun"'
Autor:
GUAN Tianyi, LI Rongbin, SUN Xiao, WANG Xinfeng, TANG Mingzhen, GAO Jian, LIU Yiping, SI Shuchun
Publikováno v:
能源环境保护, Vol 37, Iss 4, Pp 100-108 (2023)
To understand the emission characteristics of particulate matter (PM), black carbon (BC), and volatile organic compounds (VOCs) from different pollution sources, in-situ measurements of the PM, BC, and VOCs concentrations as well as the size distribu
Externí odkaz:
https://doaj.org/article/1c47cf1f7f4a4f68ae013d46624c9843
The stair phase coding patterns have been widely used to determine the fringe order for phase unwrapping of the wrapped phase in 3D shape measurement. Although the special coding sequence algorithm can achieve with a large number of codewords, it nee
Externí odkaz:
http://arxiv.org/abs/2206.12618
Publikováno v:
In Journal of Environmental Sciences August 2024 142:215-225
In order to increase the efficiency of phase retrieval,Wang proposed a high-speed moire phase retrieval method.But it is used only to measure the tiny object. In view of the limitation of Wang method,we proposed a dynamic three-dimensional (3D) measu
Externí odkaz:
http://arxiv.org/abs/1807.01399
One of the major challenges of employing a dual-frequency phase-shifting algorithm for phase retrieval is its sensitivity to noise. Yun et. al [H Yun, B Li, S Zhang. 2017] proposed a dual-frequency method based on the Fourier transform profilometry (
Externí odkaz:
http://arxiv.org/abs/1705.06816
Phase retrieval is one of the most challenging processes in many interferometry techniques. To promote the phase retrieval, Xu et. al [X. Xu, Y. Wang, Y. Xu, W. Jin. 2016] proposed a method based on dual-wavelength interferometry. However, the phase-
Externí odkaz:
http://arxiv.org/abs/1704.08139
For many profilometry techniques, phase unwrapping is one of the most challenging process. In order to sidestep the phase unwrapping process, Perciante et. al [Appl Opt 2015; 54(10):3018-23] proposed a wrapping-free method based on the direct integra
Externí odkaz:
http://arxiv.org/abs/1703.01435
Autor:
Wang, Minmin, Du, Guangliang, Zhou, Canlin, Si, Shuchun, Lei, Zhenkun, Li, XiaoLei, Li, YanJie
The number of phase wraps in 2D wrapped phase map can be completely eliminated, or greatly reduced by frequency shifting. But the wraps usually cannot be optimally reduced using the conventional fast Fourier transform (FFT) because the spectrum can b
Externí odkaz:
http://arxiv.org/abs/1611.09708
Conventional dual-frequency fringe projection algorithm often suffers from phase unwrapping failure when the frequency ratio between the high frequency and the low one is too large. Zhang et.al. proposed an enhanced two-frequency phase-shifting metho
Externí odkaz:
http://arxiv.org/abs/1610.04261
Autor:
Wang, Minmin, Du, Guangliang, Zhou, Canlin, Zhang, Chaorui, Si, Shuchun, Li, Hui, Lei, Zhenkun, Li, YanJie
We comment on the recent Letter by Xu and Wang et al. [Opt. Lett. 41, 2430 (2016)] in which an approach of quantitative phase extraction in dual-wavelength in-line phase-shifting interferometry (DWILPSI) was proposed. It is noted that a special phase
Externí odkaz:
http://arxiv.org/abs/1606.08175