Zobrazeno 1 - 10
of 91
pro vyhledávání: '"Bingcai Liu"'
Autor:
Xueliang Zhu, Dasen Wang, Mengyao Zhang, Bingcai Liu, Ailing Tian, Guiying Jin, Xianfeng Zheng
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)
Abstract The conjugate shift differential method, based on Fourier transforms, is critical for surface error testing of high-precision optical elements. However, this common approach is also prone to periodic spectrum loss. As such, this paper propos
Externí odkaz:
https://doaj.org/article/0bfb6d2f6b8b4597a58ecaedf8294bf1
Publikováno v:
Photonics, Vol 11, Iss 3, p 226 (2024)
A novel preprocessing method based on a modified U-NET is proposed for single interference fringes. The framework is constructed by introducing spatial attention and channel attention modules to optimize performance. In this process, interferometric
Externí odkaz:
https://doaj.org/article/4e0c4260a497433bbf0168199796da99
Publikováno v:
Applied Sciences, Vol 14, Iss 5, p 1927 (2024)
The mirror component is one of the most critical components in the space remote sensing payload, and the performance of its support essentially determines the imaging quality of the system. Mirror components need to have high face shape accuracy, hig
Externí odkaz:
https://doaj.org/article/28783e441d3f45cfa85b0e8a6c80883c
Publikováno v:
Energy Reports, Vol 8, Iss , Pp 243-250 (2022)
At present, UAV (unmanned aerial vehicle) inspection has been widely used in the operation and maintenance of overhead transmission lines. However, the instrument indications of overhead lines are reading usually by climbing artificially or manual re
Externí odkaz:
https://doaj.org/article/221daa8a7f134f69867c46106ead6f0b
Publikováno v:
Energy Reports, Vol 8, Iss , Pp 1429-1436 (2022)
The fouling and flashing of line insulators often cause serious damage to transmission lines and makes subsequent maintenance difficult, so being able to assess the fouling status of insulators in real time is an important step in achieving life-cycl
Externí odkaz:
https://doaj.org/article/8fbd0060bf3c416d8fe64727f4a96cf7
Publikováno v:
Photonics, Vol 10, Iss 12, p 1291 (2023)
In this paper, we propose a measurement method of micro-optical elements with parallel phase-shifting digital holographic phase imaging. This method can record four phase-shifting holograms with a phase difference of π/2 in a single shot and correct
Externí odkaz:
https://doaj.org/article/b9962848f34f44c196da0483bad2a1a5
Publikováno v:
Applied Sciences, Vol 13, Iss 16, p 9160 (2023)
In order to reduce the weight of optical elements in space remote sensors while increasing their stiffness, this paper takes an off-axis system secondary mirror as an example to design a square mirror with a size of 500 mm × 500 mm. The mirror adopt
Externí odkaz:
https://doaj.org/article/b95bc9c1287b48358e876e2d77eb98dd
Publikováno v:
AIP Advances, Vol 11, Iss 11, Pp 115114-115114-9 (2021)
For precise optical elements, the size of in-surface defects is at the nanometer scale. When incident light illuminates in-surface defects on optical elements, strong diffraction and scattering effects are produced, and this greatly reduces the beam
Externí odkaz:
https://doaj.org/article/c1577f932cbe4608a5d74fe6feafdbed
Publikováno v:
Applied Sciences, Vol 12, Iss 23, p 11934 (2022)
High efficiency and accuracy of semi-global matching (SGM) make it widely used in many stereo vision applications. However, SGM not only struggles in dealing with pixels in homogeneous area, but also suffers from streak artifacts. In this paper, we p
Externí odkaz:
https://doaj.org/article/e03772568ffd446e8150f1c7976bc203
Publikováno v:
International Journal of Optics, Vol 2021 (2021)
To solve the coherent noise problem of an interference image, the method of a rotating diffuser was adopted to change the coherence of a beam to reduce the noise of the interference system. The relationship between the speed of the diffuser and the s
Externí odkaz:
https://doaj.org/article/0277ff49caa14063a1fdac86af1823b4