Xiaoli Liu, Licheng Zhou, Wending Liu, Yifan Zhou, Y. Xiong, JiZhou Wang
The impact of the interface effect on the etching accuracy of a non-single-layer structure was utilized as a starting point in this work to analyze the correlation between the integrated structure's film surface/interface temperature field, stress field distribution, and interface mutation. Based on single-factor etching experiments, the relationship between the temperature field, stress field, and laser characteristic parameters was evaluated via a combination of theoretical analysis and numerical simulation. For polyimide-based metal aluminum film, a connection between scanning speed and etching characteristic parameters was discovered. The results illustrate that when Al/PI (aluminum film thickness of 2μm) was irradiated by a laser, the interface temperature reached a certain value, which caused distortion of the film and substrate. Changes in the distribution of the temperature and stress fields of the film affect the heat transfer in the system and thus affect the thermodynamic trajectory, thermal feedback, etching rate, and shape of the target film surface. Ultimately, the etching and removal of the Al/PI integration of the non-single-layer structure are attributed to the interplay of thermal and stress field effects.
{"title":"Thermodynamic effects of pulsed laser multilayer thin film etching","authors":"Xiaoli Liu, Licheng Zhou, Wending Liu, Yifan Zhou, Y. Xiong, JiZhou Wang","doi":"10.1117/12.2683889","DOIUrl":"https://doi.org/10.1117/12.2683889","url":null,"abstract":"The impact of the interface effect on the etching accuracy of a non-single-layer structure was utilized as a starting point in this work to analyze the correlation between the integrated structure's film surface/interface temperature field, stress field distribution, and interface mutation. Based on single-factor etching experiments, the relationship between the temperature field, stress field, and laser characteristic parameters was evaluated via a combination of theoretical analysis and numerical simulation. For polyimide-based metal aluminum film, a connection between scanning speed and etching characteristic parameters was discovered. The results illustrate that when Al/PI (aluminum film thickness of 2μm) was irradiated by a laser, the interface temperature reached a certain value, which caused distortion of the film and substrate. Changes in the distribution of the temperature and stress fields of the film affect the heat transfer in the system and thus affect the thermodynamic trajectory, thermal feedback, etching rate, and shape of the target film surface. Ultimately, the etching and removal of the Al/PI integration of the non-single-layer structure are attributed to the interplay of thermal and stress field effects.","PeriodicalId":184319,"journal":{"name":"Optical Frontiers","volume":"180 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128827717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the traditional Fourier single-pixel imaging (FSPI), compressed sampling is often used to improve the acquisition speed. However, the reconstructed image after compressed sampling often has a lower resolution and the quality is difficult to meet the imaging requirements of practical applications. To address this issue, we proposed a novel imaging method that combines deep learning and single-pixel imaging, which can reconstruct high-resolution images with only a small-scale sampling. In the training phase of the network, we attempted to incorporate the physical process of FSPI into the training process. To achieve this objective, a large number of natural images were selected to simulate Fourier single-pixel compressed sampling and reconstruction. The compressed reconstructed samples were subsequently employed for network training. In the testing phase of the network, the compressed reconstruction samples of the test dataset were input into the network for optimization. The experimental results showed that compared with traditional compressed reconstruction methods, this method effectively improved the quality of reconstructed images.
{"title":"Fast high-resolution imaging combining deep learning and single-pixel imaging","authors":"X. Liu, Zilong Li, Jiaqing Dong, Guijun Wang, Wenhua Zhong, Qiegen Liu, Xianlin Song","doi":"10.1117/12.2684974","DOIUrl":"https://doi.org/10.1117/12.2684974","url":null,"abstract":"In the traditional Fourier single-pixel imaging (FSPI), compressed sampling is often used to improve the acquisition speed. However, the reconstructed image after compressed sampling often has a lower resolution and the quality is difficult to meet the imaging requirements of practical applications. To address this issue, we proposed a novel imaging method that combines deep learning and single-pixel imaging, which can reconstruct high-resolution images with only a small-scale sampling. In the training phase of the network, we attempted to incorporate the physical process of FSPI into the training process. To achieve this objective, a large number of natural images were selected to simulate Fourier single-pixel compressed sampling and reconstruction. The compressed reconstructed samples were subsequently employed for network training. In the testing phase of the network, the compressed reconstruction samples of the test dataset were input into the network for optimization. The experimental results showed that compared with traditional compressed reconstruction methods, this method effectively improved the quality of reconstructed images.","PeriodicalId":184319,"journal":{"name":"Optical Frontiers","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114321105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Metamaterial induced transparency (MIT) has great potential in photonic device applications. Here, we design a metastructure with MIT effect generated by destructive interference of bright-dark-dark three modes. Therein, the cross resonator formed by the combination of the cut-wire resonator and the long vertical metal bar (LVMB) act as the bright mode, and two pairs of split ring resonators of different lengths are distributed around the cross resonator as two dark modes, realizing significant multi-band MIT effect. Furthermore, the embedded photosensitive Si island in the broken LVMB can be used to tune the effective length by changing the conductivity, thereby actively controlling the conversion from multi-band behaviors into triple MITs. Our results could achieve the dynamic multi-band switching, which has broad application prospects for optical information processing and communication.
{"title":"Active modulation of multiple metamaterial induced transparences in terahertz region","authors":"Huiwen Shi, Longyu Shi, Xuteng Zhang, Pujing Zhang, Jinyu Chen, Mengyuan Wang, Huijuan Sun, Qing-li Zhou, Cunlin Zhang","doi":"10.1117/12.2683140","DOIUrl":"https://doi.org/10.1117/12.2683140","url":null,"abstract":"Metamaterial induced transparency (MIT) has great potential in photonic device applications. Here, we design a metastructure with MIT effect generated by destructive interference of bright-dark-dark three modes. Therein, the cross resonator formed by the combination of the cut-wire resonator and the long vertical metal bar (LVMB) act as the bright mode, and two pairs of split ring resonators of different lengths are distributed around the cross resonator as two dark modes, realizing significant multi-band MIT effect. Furthermore, the embedded photosensitive Si island in the broken LVMB can be used to tune the effective length by changing the conductivity, thereby actively controlling the conversion from multi-band behaviors into triple MITs. Our results could achieve the dynamic multi-band switching, which has broad application prospects for optical information processing and communication.","PeriodicalId":184319,"journal":{"name":"Optical Frontiers","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116683275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Longxiang Chen, Zhenlin Zhao, Zixiang Fu, Hao Lin, Tianhe Wu, S. Xie, Qijing Lu
In recent years, multicolor lasers have shown high potential for applications in many fields, such as white light source generation, biosensor or bioimaging, and optical communication, etc. Here, we use an optofluidic microbubble resonator (OFMBR) filled with a highly nonlinear liquid to obtain multicolor stimulated scatterings. By filling OFMBR with carbon disulfide and pumping it with nanosecond pulsed laser, a broadband visible supercontinuum spanning from 532 nm to 630 nm is generated due to the stimulated Raman scattering and stimulated Raman-Kerr scattering. This study opens the way towards potential application of multicolor or white light generation using optical nonlinear liquids.
{"title":"Visible nonlinear stimulated scatterings generated in a carbon disulfide filled microbubble cavity","authors":"Longxiang Chen, Zhenlin Zhao, Zixiang Fu, Hao Lin, Tianhe Wu, S. Xie, Qijing Lu","doi":"10.1117/12.2685005","DOIUrl":"https://doi.org/10.1117/12.2685005","url":null,"abstract":"In recent years, multicolor lasers have shown high potential for applications in many fields, such as white light source generation, biosensor or bioimaging, and optical communication, etc. Here, we use an optofluidic microbubble resonator (OFMBR) filled with a highly nonlinear liquid to obtain multicolor stimulated scatterings. By filling OFMBR with carbon disulfide and pumping it with nanosecond pulsed laser, a broadband visible supercontinuum spanning from 532 nm to 630 nm is generated due to the stimulated Raman scattering and stimulated Raman-Kerr scattering. This study opens the way towards potential application of multicolor or white light generation using optical nonlinear liquids.","PeriodicalId":184319,"journal":{"name":"Optical Frontiers","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122649406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aiming at the requirement of accurate simulation of near-space atmospheric infrared background radiation, this paper simulates near-space infrared atmospheric background radiance according to atmospheric parameters detected by satellites. The multi-channel infrared radiometer SABER (Sound of the Atmosphere using Broadband Emission Radiometry) carried by TIMED satellite (Thermosphere, Ionosphere Mesosphere Energetics and Dynamics) is used to acquire atmospheric profile. Combined with limb observation model and atmospheric background radiance calculation model, the transmittance and spectral radiance of infrared atmospheric background were simulated. The spectral radiance of atmospheric background under the standard atmospheric model and satellite atmospheric profiles was compared to analyze the difference between the two atmospheric parameter. In the infrared band, the atmospheric profile has a great impact on atmospheric background radiance. For the accurate simulation calculation of infrared background spectral radiance in different regions, the influence of atmospheric profile parameters should be taken into account.
针对近空间大气红外背景辐射精确模拟的要求，根据卫星探测到的大气参数，模拟近空间红外大气背景辐射。利用TIMED卫星搭载的多通道红外辐射计SABER (Sound of Atmosphere using Broadband Emission Radiometry)(热层、电离层、中间层能量学与动力学)获取大气剖面。结合翼缘观测模型和大气背景辐亮度计算模型，对红外大气背景的透射率和光谱辐亮度进行了模拟。比较了标准大气模式和卫星大气廓线下大气背景的光谱辐亮度，分析了这两个大气参数的差异。在红外波段，大气剖面对大气背景辐射有很大的影响。为了准确模拟计算不同区域的红外背景光谱辐射，需要考虑大气廓线参数的影响。
{"title":"Infrared background spectral radiance analysis of limb observation based on satellite observation data","authors":"J. Bai, Lu Bai, Chao Huang","doi":"10.1117/12.2684729","DOIUrl":"https://doi.org/10.1117/12.2684729","url":null,"abstract":"Aiming at the requirement of accurate simulation of near-space atmospheric infrared background radiation, this paper simulates near-space infrared atmospheric background radiance according to atmospheric parameters detected by satellites. The multi-channel infrared radiometer SABER (Sound of the Atmosphere using Broadband Emission Radiometry) carried by TIMED satellite (Thermosphere, Ionosphere Mesosphere Energetics and Dynamics) is used to acquire atmospheric profile. Combined with limb observation model and atmospheric background radiance calculation model, the transmittance and spectral radiance of infrared atmospheric background were simulated. The spectral radiance of atmospheric background under the standard atmospheric model and satellite atmospheric profiles was compared to analyze the difference between the two atmospheric parameter. In the infrared band, the atmospheric profile has a great impact on atmospheric background radiance. For the accurate simulation calculation of infrared background spectral radiance in different regions, the influence of atmospheric profile parameters should be taken into account.","PeriodicalId":184319,"journal":{"name":"Optical Frontiers","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133697657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jin-long Ding, Ming-Yang Chen, L. Ding, Zhengqiu Dong
An hollow-core terahertz fiber applying anti-resonant Bragg structure as the basic unit is proposed. Simulations results shown that the proposed THz fiber shows both the transmission characteristics of a conventional anti-resonant structure and a Bragg fiber. The confinement loss of which could be two-three orders of magnitude lower than that of an anti-resonant structure fiber consists of a single anti-resonant ring, and the total loss is one order of magnitude lower, the transmission loss of the proposed THz fiber could be 0.5 dB/m or less with a relative wide bandwidth of 0.15 THz.
{"title":"Research on hollow-core terahertz fiber based on anti-resonant Bragg structure elements","authors":"Jin-long Ding, Ming-Yang Chen, L. Ding, Zhengqiu Dong","doi":"10.1117/12.2684783","DOIUrl":"https://doi.org/10.1117/12.2684783","url":null,"abstract":"An hollow-core terahertz fiber applying anti-resonant Bragg structure as the basic unit is proposed. Simulations results shown that the proposed THz fiber shows both the transmission characteristics of a conventional anti-resonant structure and a Bragg fiber. The confinement loss of which could be two-three orders of magnitude lower than that of an anti-resonant structure fiber consists of a single anti-resonant ring, and the total loss is one order of magnitude lower, the transmission loss of the proposed THz fiber could be 0.5 dB/m or less with a relative wide bandwidth of 0.15 THz.","PeriodicalId":184319,"journal":{"name":"Optical Frontiers","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134191535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This article presents a novel method to simultaneously measure the six-degree-of-freedom (6-DOF) absolute position and attitude based on light spots. The proposed system consists of a measurement unit and a moving target: the measurement unit contains a laser, three cube corner retroreflectors (CCR), three CMOSs, and some beam splitters; the target is a cube with three CCRs installed on each of its three orthogonal planes. In the measurement unit, the laser is split into three reference lights as well as three measured lights which are detected by three CMOSs after returning from six CCRs. Based on the vector analysis of the optical path, the relationship between 6-DOF position and attitude of the moving target and the output coordinates of three CMOSs is established. This method is capable of simultaneously measuring translational motions along as well as rotational motions around three orthogonal axes and achieving the absolute positioning of the target, which has overcome the shortage that the measurement systems based on laser interference can not measure absolute position and attitude. The accuracy of this method has been verified by Monte Carlo stochastic simulation and sinusoidal trajectory simulation in the range of the target’s motion. The simulation results show that the errors of position are less than 0.5 μm and the errors of attitude are less than 2.3 ″, which indicates the algorithm error is no more than the minimum pixel size of CMOS. This 6-DOF absolute pose simultaneous measurement method with simplicity and high precision has great potential for application in various precision machining fields.
{"title":"Simultaneous measurement method of six-degree-of-freedom absolute position and attitude based on light spots","authors":"Ruimao Ma, Jianquan Zhang, Wenbo Dong, Jiaqi Yu, Jiancheng Liu, W. Ge, Jianguo He, Meng Yu, Aimin Xiao","doi":"10.1117/12.2684020","DOIUrl":"https://doi.org/10.1117/12.2684020","url":null,"abstract":"This article presents a novel method to simultaneously measure the six-degree-of-freedom (6-DOF) absolute position and attitude based on light spots. The proposed system consists of a measurement unit and a moving target: the measurement unit contains a laser, three cube corner retroreflectors (CCR), three CMOSs, and some beam splitters; the target is a cube with three CCRs installed on each of its three orthogonal planes. In the measurement unit, the laser is split into three reference lights as well as three measured lights which are detected by three CMOSs after returning from six CCRs. Based on the vector analysis of the optical path, the relationship between 6-DOF position and attitude of the moving target and the output coordinates of three CMOSs is established. This method is capable of simultaneously measuring translational motions along as well as rotational motions around three orthogonal axes and achieving the absolute positioning of the target, which has overcome the shortage that the measurement systems based on laser interference can not measure absolute position and attitude. The accuracy of this method has been verified by Monte Carlo stochastic simulation and sinusoidal trajectory simulation in the range of the target’s motion. The simulation results show that the errors of position are less than 0.5 μm and the errors of attitude are less than 2.3 ″, which indicates the algorithm error is no more than the minimum pixel size of CMOS. This 6-DOF absolute pose simultaneous measurement method with simplicity and high precision has great potential for application in various precision machining fields.","PeriodicalId":184319,"journal":{"name":"Optical Frontiers","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131612501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Metamaterial induced transparency (MIT) has shown great application potential in terahertz regime, which is of great significance in constructing photonic components such as slow light systems and tunable filters. The single or multiple transparent windows can be induced through near-field coupling via two or more resonant modes. Compared with the single MIT, multi-MIT effect can realize multiband sensing, communication, and storage applications. Here, we design a dual-MIT metastructure composed of three bright resonators including a cut-wire resonator (CWR), a pair of large toroidal split ring resonators (LTSRRs), and a pair of small toroidal split ring resonators (STSRRs). Dual-MIT windows can be induced through coupling between the electric dipole resonance and two inductance capacitance (LC) resonances. By optimizing and adjusting the geometric parameters of the metasurface, the resonant strength could be suppressed or enhanced. Thus, we can passively manipulate the frequency and amplitude of the dual-MIT windows and realize the switching between the two windows and single MIT. In addition, by actively tuning the conductivity of photosensitive Si introduced in the gap of the LTSRRs and STSRRs, we observe the LC resonance can be weakened to quench the dual-MIT windows. Our research provides an approach to explore the miniaturized, multi-functional, and switching components in terahertz regime.
{"title":"Active and passive modulation of dual metamaterial induced transparency in terahertz regime","authors":"Xuteng Zhang, Yuwang Deng, Longyu Shi, Huiwen Shi, Pujing Zhang, Z. Wang, Qing-li Zhou, Cunlin Zhang","doi":"10.1117/12.2683535","DOIUrl":"https://doi.org/10.1117/12.2683535","url":null,"abstract":"Metamaterial induced transparency (MIT) has shown great application potential in terahertz regime, which is of great significance in constructing photonic components such as slow light systems and tunable filters. The single or multiple transparent windows can be induced through near-field coupling via two or more resonant modes. Compared with the single MIT, multi-MIT effect can realize multiband sensing, communication, and storage applications. Here, we design a dual-MIT metastructure composed of three bright resonators including a cut-wire resonator (CWR), a pair of large toroidal split ring resonators (LTSRRs), and a pair of small toroidal split ring resonators (STSRRs). Dual-MIT windows can be induced through coupling between the electric dipole resonance and two inductance capacitance (LC) resonances. By optimizing and adjusting the geometric parameters of the metasurface, the resonant strength could be suppressed or enhanced. Thus, we can passively manipulate the frequency and amplitude of the dual-MIT windows and realize the switching between the two windows and single MIT. In addition, by actively tuning the conductivity of photosensitive Si introduced in the gap of the LTSRRs and STSRRs, we observe the LC resonance can be weakened to quench the dual-MIT windows. Our research provides an approach to explore the miniaturized, multi-functional, and switching components in terahertz regime.","PeriodicalId":184319,"journal":{"name":"Optical Frontiers","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125354145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The non-equilibrium ultraviolet radiation characteristics of plume and shock are closely related to flight parameters such as vibration-rotation temperature, where temperature is the most important thermodynamic quantity for calculating non-equilibrium radiation. CN is the main product of aircraft reentry into the atmosphere and the ablation of carbon-based composite materials, and has very high emission efficiency, making it one of the best molecules for high-temperature gas temperature measurement. In this paper, the two-temperature model and the line-by-line method are used to calculate the CN ultraviolet spectral radiance, and the spectral structure of the violet band is analyzed. The effects of vibration temperature and rotation temperature on the spectral intensity and spectral shape of ultraviolet radiation under thermodynamic non-equilibrium conditions are discussed. According to the relationship between the band tail of CN violet band v=0 peak and the vibration temperature and rotation temperature, a method to invert the rotation temperature using the the slope of CN spectral relative intensity
{"title":"Study on obtaining rotation temperature by using the relative intensity of the CN spectrum in the ultraviolet band","authors":"Mengjun Sun, Lu Bai, Dan-meng Zhang, Huigang Shi","doi":"10.1117/12.2684746","DOIUrl":"https://doi.org/10.1117/12.2684746","url":null,"abstract":"The non-equilibrium ultraviolet radiation characteristics of plume and shock are closely related to flight parameters such as vibration-rotation temperature, where temperature is the most important thermodynamic quantity for calculating non-equilibrium radiation. CN is the main product of aircraft reentry into the atmosphere and the ablation of carbon-based composite materials, and has very high emission efficiency, making it one of the best molecules for high-temperature gas temperature measurement. In this paper, the two-temperature model and the line-by-line method are used to calculate the CN ultraviolet spectral radiance, and the spectral structure of the violet band is analyzed. The effects of vibration temperature and rotation temperature on the spectral intensity and spectral shape of ultraviolet radiation under thermodynamic non-equilibrium conditions are discussed. According to the relationship between the band tail of CN violet band v=0 peak and the vibration temperature and rotation temperature, a method to invert the rotation temperature using the the slope of CN spectral relative intensity","PeriodicalId":184319,"journal":{"name":"Optical Frontiers","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116107838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wenyong Lu, Y. Shi, Zhan Jin, Weijie Luo, Jing Chen, Jiajie He
Binocular stereo vision technology has good application prospects and practical value in industrial production, autonomous driving, quality inspection, and many other aspects, and is an important research direction in computer vision. Strain measurement based on binocular stereo vision is different from traditional strain measurement methods, and has advantages such as convenient operation, high accuracy, and global dynamic measurement. This article focuses on the strain measurement technology of binocular stereo vision, and studies the camera calibration, stereo matching, 3D reconstruction, and SGBM algorithm in stereo matching of binocular cameras. By constructing a binocular camera strain testing system, the distance between the corresponding point AB before and after the strain of the target object is measured, thereby achieving the measurement of the strain of the target object. The strain of the target object obtained from the experimental test results is 47.53%, the theoretical tensile strain is 48.54%, and the relative error is controlled within ± 2%.
{"title":"Research on strain testing based on binocular stereo vision","authors":"Wenyong Lu, Y. Shi, Zhan Jin, Weijie Luo, Jing Chen, Jiajie He","doi":"10.1117/12.2684063","DOIUrl":"https://doi.org/10.1117/12.2684063","url":null,"abstract":"Binocular stereo vision technology has good application prospects and practical value in industrial production, autonomous driving, quality inspection, and many other aspects, and is an important research direction in computer vision. Strain measurement based on binocular stereo vision is different from traditional strain measurement methods, and has advantages such as convenient operation, high accuracy, and global dynamic measurement. This article focuses on the strain measurement technology of binocular stereo vision, and studies the camera calibration, stereo matching, 3D reconstruction, and SGBM algorithm in stereo matching of binocular cameras. By constructing a binocular camera strain testing system, the distance between the corresponding point AB before and after the strain of the target object is measured, thereby achieving the measurement of the strain of the target object. The strain of the target object obtained from the experimental test results is 47.53%, the theoretical tensile strain is 48.54%, and the relative error is controlled within ± 2%.","PeriodicalId":184319,"journal":{"name":"Optical Frontiers","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126307884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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