International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference最新文献

High-frequency enhanced based on high-resolution synthetic spectrum quantitative phase imaging 基于高分辨率合成光谱定量相位成像的高频增强

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586428

Linpeng Lu, Jiasong Sun, Yao Fan, Jialin Zhang, Qian Chen, C. Zuo

{"title":"High-frequency enhanced based on high-resolution synthetic spectrum quantitative phase imaging","authors":"Linpeng Lu, Jiasong Sun, Yao Fan, Jialin Zhang, Qian Chen, C. Zuo","doi":"10.1117/12.2586428","DOIUrl":"https://doi.org/10.1117/12.2586428","url":null,"abstract":"According to the phase gradient transfer function (PGTF) derived from the phase space theory, the phase recovery algorithm based on the transport of intensity equation (TIE) has the problem that the high-frequency phase is underestimated due to the coherence effect of the limited aperture system under partially coherent illumination. Therefore, based on the theory of PGTF and phase transfer function (PTF), a phase reconstruction algorithm named high-resolution synthetic spectrum (HSS) method combining the TIE and the PTF-based deconvolution is proposed. This technique broadens the application range and provides high contrast, high accuracy, and highresolution quantitative phase results with high robustness. The performances of this technology are demonstrated by simulation and experiments, showing efficient for phase retrieval in the near-Fresnel region. Such a highresolution method can offer a flexible and cost-effective alternative for biomedical research and cell analysis, providing new avenues to design powerful computational imaging systems","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117163752","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}

引用次数: 0

Research on inversion algorithm of arbitrary phase-shifting wind imaging interferometer 任意相移风成像干涉仪反演算法研究

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586800

Yongqiang Sun, Chunmin Zhang, Pengju Zhang, Feng Han

{"title":"Research on inversion algorithm of arbitrary phase-shifting wind imaging interferometer","authors":"Yongqiang Sun, Chunmin Zhang, Pengju Zhang, Feng Han","doi":"10.1117/12.2586800","DOIUrl":"https://doi.org/10.1117/12.2586800","url":null,"abstract":"The use of wind imaging interferometer to retrieve wind field information requires high accuracy of the instrument in phase shift. Traditional wind field inversion algorithms invert wind field information such as wind speed and temperature based on equal phase-shift interferometers. In actual situations, the phase shift of the wind imaging interferometer does not perfectly meet the design requirements, producing inversion result errors. In this paper, the inversion algorithm of an arbitrary phase shift wind imaging interferometer is studied, and the feasibility of the AIA (advanced iterative algorithm) inversion algorithm is verified under the condition of low accuracy of the instrument phase shift. The comparison of the inversion results of the AIA algorithm in wide-field interference and non-widefield interference are respectively discussed. The influence of the unevenness of the strip system caused by the temperature distribution on the inversion accuracy of the AIA algorithm is analyzed. The conclusions of this paper can provide theoretical support for phase-shifting calibration of wind imaging interferometers and wind field information inversion in low-precision instrument.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116539025","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}

引用次数: 0

Study on characteristics of composite light scattering of square pore periodic structure with defect particles 含缺陷粒子的方孔周期结构复合光散射特性研究

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2585263

L. Gong, Zhensen Wu, Yanglin Liu, Wei Wang, Li-guo Wang, Qian Wang, Ya-qing Li

{"title":"Study on characteristics of composite light scattering of square pore periodic structure with defect particles","authors":"L. Gong, Zhensen Wu, Yanglin Liu, Wei Wang, Li-guo Wang, Qian Wang, Ya-qing Li","doi":"10.1117/12.2585263","DOIUrl":"https://doi.org/10.1117/12.2585263","url":null,"abstract":"The surface plasmon has the advantages of breaking through optical diffraction limitation and local field enhancement. With the development of micro nanometer cycle structure of film/semiconductor rapidly, the cycle unit size tends to be nanometer level, therefore the requirement for purity and clarity is higher and higher. The existence of defect influence the quality of surface plasmon obviously , so it should not be ignored on the overall performance of optical system. In order to detect effectively the deficiency of surface plasmon, a surface plasmon structure model based on the plane type surface of periodic square hole which contains defective particles is proposed by Multi- Resolution Time-Domain (MRTD) method. The changes of the light scattering field when different defects appear in the structure of periodic square hole vitro exciter are focused on micro-and nanoscale, and we can analyze the influence of different structural parameters and defect parameters on the total scattering field to achieve effective control of the defects and modulation of the light field.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130518102","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}

引用次数: 0

High sensitive locating through scattering medium with phase-space-prior 具有相空间先验的散射介质高灵敏度定位

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586521

Shuo Zhu, Enlai Guo, Qianying Cui, Dongliang Zheng, Lianfa Bai, Jing Han

引用次数: 0

Simulation of non-line-of-sight imaging system based on the light-cone transform 基于光锥变换的非视距成像系统仿真

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586651

Wenhua Zhu, J. Tan, Caiwen Ma, Xiuqin Su

引用次数: 0

Image super-resolution using convolutional neural network with symmetric skip connections 利用对称跳跃连接的卷积神经网络实现图像超分辨率

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586467

Yan Zou, Fujun Xiao, Linfei Zhang, Qian Chen, Bowen Wang, Yan Hu

{"title":"Image super-resolution using convolutional neural network with symmetric skip connections","authors":"Yan Zou, Fujun Xiao, Linfei Zhang, Qian Chen, Bowen Wang, Yan Hu","doi":"10.1117/12.2586467","DOIUrl":"https://doi.org/10.1117/12.2586467","url":null,"abstract":"In recent years, the convolution neural network has been widely used in single image super-resolution and has an excellent super-resolution ability. In this paper, a novel convolutional neural network structure based on symmetric skip connection is proposed, which contains multiple convolution layers and deconvolution layers. The role of the convolution layer is to extract the details of image content, and the function of the deconvolution layer is to make the image upsampling and restore the image content details. In addition, we use skip connection between the convolution layer and the deconvolution layer of network structure, which can transfer image information from the front end to the back end. Meanwhile, skip connection can also effectively solve the problem of gradient vanishing. Besides, the residual block is introduced to deepen the network structure. The deeper network structure can learn more complex changes. Different from other papers, this paper uses the method of adding the number of channels for feature fusion. This method can greatly increase the number of feature images, which is helpful to restore image details by deconvolution layer. A large number of experiments show that our network has efficient super-resolution ability of infrared image details.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121444757","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}

引用次数: 1

Deep space point source background infrared radiation signal simulation by IRAS star catalog 利用IRAS星表模拟深空点源背景红外辐射信号

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2585432

Jinlu Li, L. Bai, Q. Lv, P. Gao

{"title":"Deep space point source background infrared radiation signal simulation by IRAS star catalog","authors":"Jinlu Li, L. Bai, Q. Lv, P. Gao","doi":"10.1117/12.2585432","DOIUrl":"https://doi.org/10.1117/12.2585432","url":null,"abstract":"This paper presents a stellar point source background radiation model based on IRAS catalog, which is used to simulate the stellar background radiation signals of observers at any time of observation and in the field of view at any longitude, latitude and altitude. First, the data of stellar equatorial longitude, equatorial latitude, magnitude, and radiation intensity recorded at the epoch time in IRAS catalog is used to correct the proper motion, precession and nutation, and the coordinate information of the star at the specified time in the coordinate system of equatorial celestial sphere will be obtained. Then, after a series of coordinate conversions, with the occlusion of the line of sight being taken into consideration, the coordinates of the star at the time of observation are converted into the apparent position relative to the observer in the specified scene. On this basis, the infrared irradiance of stars in the specified field of view is calculated based on the radiation intensity data recorded in the star table. The research results have some reference value for the detection and recognition of space objects.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125609763","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}

引用次数: 0

THz spectral analysis of barbituric acid and its dihydrate 巴比妥酸及其二水合物的太赫兹光谱分析

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586799

Zhuanping Zheng, Aidong Li, Y. Zhi, J. Dong

引用次数: 0

Synthetic aperture optical system design for low-altitude detection 低空探测合成孔径光学系统设计

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2590078

J. Chen, A. Tian, Mengyao Zhang

引用次数: 0

An improved reliability-guided phase unwrapping algorithm for digital holographic microscopic 一种改进的数字全息显微镜可靠性引导相位展开算法

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586727

Qian Shen, Linpeng Lu, Qian Chen, C. Zuo

引用次数: 0