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Chinese Society for Optical Engineering Conferences, CSOE 2016

作者： Zhang, Qian Zhou, Pucheng Xue, Mogen Anhui Province Key Laboratory of Polarized Imaging Detection Technology Hefei China

ISBN: (纸本)9781510610118

Plane measurement is an important task in image processing and computer vision. In this paper, we present a kind of plane measurement method for monocular vision, which calculates the image magnification by controlling the camera movement, the height of object and camera focal length. We can finally get the measurement results. Experimental results show that the proposed method can measure the distance more accurately. What's more, it has the advantages of high universality, simple steps and small error. © 2017 SPIE.

关键词： Cameras

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A novel method of spike detection for interferograms based on two-step filtering

A novel method of spike detection for interferograms based o...

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4th International Conference on Frontiers of Manufacturing Science and Measuring technology, ICFMM 2014

作者： Zou, Yao Pu Han, Chang Pei Zhang, Lei Pan, Wen Gui Wang, Chao Key Laboratory of Infrared System Detection and Imaging Technology SITP UCAS China

ISBN: (纸本)9783038351924

According to the characteristics of interferogram, we design a new spike detection method, which firstly filters an interferogram with two different ways and then detects spikes based on both results. Theoretical analysis and computer simulation shows that this algorithm performs well in detecting spikes in any position of an interferogram with high accuracy, and can be easily implemented in hardware. © (2014) Trans Tech Publications, Switzerland.

关键词： Computer hardware

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A method to compensate the dead time for three-phase PWM inverters

A method to compensate the dead time for three-phase PWM inv...

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International Conference on Frontiers of Energy, Materials and Information Engineering, ICFMEI 2014

作者： Pan, Wen Gui Zhang, Lei Zou, Yao Pu Wang, Chao Han, Chang Pei Key Laboratory of Infrared System Detection and Imaging Technology SITP UCAS Shanghai China

ISBN: (纸本)9783038352778

As for a vector control of a permanent magnet synchronous motor, this paper analyzed the influence of dead-time effect of three-phase bridge inverters on output voltage and current in details. A novel on-line method was proposed for dead-time effect compensation based on disturbance observer. At last, the method is simulated using MATLAB and the simulation results proves the effectiveness and feasibility of the method presented. © (2014) Trans Tech Publications, Switzerland.

关键词： Pulse width modulation

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Research on polarization imaging detection and Tracking Method of low-speed and small UAV Targets 8

Research on Polarization Imaging Detection and Tracking Meth...

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8th Symposium on Novel Photoelectronic detection technology and Applications

作者： Huang, Qinchao Ren, Shuaijun Zhu, Hong Wu, Lingxia Yang, Fan Anhui Key Laboratory of Polarized Light Imaging Detection Technology Hefei230031 China

ISBN: (数字)9781510653122

ISBN: (纸本)9781510653115

Aiming at the problem of the low contrast between target and background in the detected UAV target intensity images, a low-speed and small UAV targets detection and tracking method based on polarization imaging detection is proposed. Based on the analysis of the polarization imaging characteristics of low-speed and small UAV targets, through polarization image analysis, single-frame detection based on spatial filtering and adaptive threshold segmentation, continuous frame target trajectory association based on spatiotemporal information, and improved KCF algorithm Target tracking and other processing processes have realized the effective detection and tracking of low-speed and small UAV targets. © 2022 SPIE

关键词： Unmanned aerial vehicles (UAV)

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Research on a fast infrared dim small targets detection and tracking method combining Pipeline Filter and Kernelized Correlation Filter 8

Research on a fast infrared dim small targets detection and ...

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8th Symposium on Novel Photoelectronic detection technology and Applications

作者： Ren, Shuaijun Huang, Qinchao Yuan, Guanglin Han, Yusheng Yang, Fan Anhui Key Laboratory of Polarized Light Imaging Detection Technology Hefei230031 China

ISBN: (数字)9781510653122

ISBN: (纸本)9781510653115

To solve the problem that infrared dim small targets are difficult to be detected and tracked under complex background,this paper proposes a method based on the fusion of Pipeline Filter and Kernelized Correlation ***, preprocess the obtained image sequence to reduce the influence of complex background on target detection;then, detect dim small infrared moving targets based on Background Prediction and Pipeline Filter;Finally,track the targets by Kernelized Correlation Filter which is initialized by the obtained detection *** deal with the interference caused by the lens moving, the target position is predicted in the process of targets *** algorithm is verified by the constructed infrared dim target data set. The results show that the proposed algorithm has better robustness and real-time performance, and the tracking effect is obvious. © 2022 SPIE

关键词： Target tracking

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A design of on-board dual-channel data handling method based on two FPGAs 6

A design of on-board dual-channel data handling method based...

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6th International SpaceWire Conference, SpaceWire 2014

作者： Yaopu, Zou Jiayou, Jiang Changpei, Han Key Laboratory of Infrared System Detection and Imaging Technology Shanghai Institute of Technical Physics UCAS Shanghai China Key Laboratory of Infrared System Detection and Imaging Technology Shanghai Institute of Technical Physics CAS Shanghai China

ISBN: (纸本)9780955719653

SpaceWire is used on FY4 meteorological satellite as on-board data-handling network. Based on SpaceWire, this paper provides a design using two FPGAs and AT7911 chips for the dual-channel data processing of a payload on FY4 to ensure that data can be transported efficiently and reliably. This design has proved to be feasible when tested on the ground. © 2014 University of Dundee.

关键词： Data handling

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Multi-modal Understanding and Generation for Object Tracking

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IEEE Transactions on Circuits and Systems for Video technology 2024年第5期35卷 4384-4396页

作者： Zhu, Hong Zhang, Pingping Xue, Lei Yuan, Guanglin National University of Defense Technology College of Electronic Engineering Hefei230037 China Army Artillery and Air Defense Academy of PLA Anhui Key Laboratory of Polarization Imaging Detection Technology Hefei230031 China Dalian University of Technology School of Artificial Intelligence Dalian116024 China Army Artillery and Air Defense Academy of PLA Hefei230031 China

Vision-Language Tracking (VLT) aims to predict the target state in video sequences using two types of heterogeneous information: 1) the static text description detailing main characteristics of the tracked object, and 2) the dynamic image patches containing the target and its surroundings. However, as the tracking proceeds, inconsistencies may arise between the linguistic information embedded in the text description and the visual representations stored in the search images. In such cases, the direct fusion of vision and language could result in conflicts. To tackle this issue, we propose MugTracker, which integrates image-to-text generation into the VLT framework and attempts a generative updating way to mitigate the effects of inconsistencies. Specifically, we design two branch tasks: multi-modal understanding for reasoning and multi-modal generation for updating. We develop a dynamic text generator based on the hybrid architecture of the pre-trained foundation model BLIP and adaptively update the text reference as the context varies for more accurate target modeling. The semantically consistent visual and linguistic representations are then aligned and associated by the reasoning branch built on the BLIP dual-encoder to infer the target state. To better transfer the foundation model to build a strong tracker, we introduce the proposed TE-Adapter in the visual components for target enhancement and Text-Adapter in the linguistic components to strengthen the learning of discriminative semantics. Our MugTracker has been extensively evaluated on three datasets, and the superior performance compared to the state-of-the-arts demonstrates its effectiveness. © 1991-2012 IEEE.

关键词： Semantics

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A Salient Region detection Model Using Semantic and Color Information

A Salient Region Detection Model Using Semantic and Color In...

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2016 International Conference on Electrical Engineering and Automation（ICEEA2016）

作者： Yun-fei ZHENG Xiong-wei ZHANG Tie-yong CAO Yong-gang HU PLA University of Science and Technology The Officer Academy of Army The Key Laboratory of Polarization Imaging Detection Technology

Due to the lack of object semantic information, existing salient region detection models using visual stimulus cues and prior knowledge are diffcult to detect some complicated salient regions with heterogeneity, low contrast or large scale. We construct a semantic salient region detection network using the fully convolutional structure in this letter. After training effectively, the proposed network can effectively extract the semantic salient regions. Aiming to the defect of inaccurate boundary of the detected semantic salient regions, we further introduce the superpixel segmentation and color appearance model to generate the superpixel-level foreground ***, we propose a new optimization model to fuse the foreground and background probability information and semantic information to derive more accurate salient region map. The experiments comparing with 11 state-of-the-art models demonstrate the effectiveness and robustness of the proposed model.

关键词： Semantic information Fully convolutional network Color appearance model Salient region detection

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Search for Solar Boosted Dark Matter Particles at the PandaX-4T Experiment

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Physical Review Letters 2025年第16期134卷 161003-161003页

作者： Guofang Shen Zihao Bo Wei Chen Xun Chen Yunhua Chen Zhaokan Cheng Xiangyi Cui Yingjie Fan Deqing Fang Zhixing Gao Lisheng Geng Karl Giboni Xunan Guo Xuyuan Guo Zichao Guo Chencheng Han Ke Han Changda He Jinrong He Di Huang Houqi Huang Junting Huang Ruquan Hou Yu Hou Xiangdong Ji Xiangpan Ji Yonglin Ju Chenxiang Li Jiafu Li Mingchuan Li Shuaijie Li Tao Li Zhiyuan Li Qing Lin Jianglai Liu Congcong Lu Xiaoying Lu Lingyin Luo Yunyang Luo Wenbo Ma Yugang Ma Yajun Mao Yue Meng Xuyang Ning Binyu Pang Ningchun Qi Zhicheng Qian Xiangxiang Ren Dong Shan Xiaofeng Shang Xiyuan Shao Manbin Shen Wenliang Sun Yi Tao Anqing Wang Guanbo Wang Hao Wang Jiamin Wang Lei Wang Meng Wang Qiuhong Wang Shaobo Wang Siguang Wang Wei Wang Xiuli Wang Xu Wang Zhou Wang Yuehuan Wei Weihao Wu Yuan Wu Mengjiao Xiao Xiang Xiao Kaizhi Xiong Yifan Xu Shunyu Yao Binbin Yan Xiyu Yan Yong Yang Peihua Ye Chunxu Yu Ying Yuan Zhe Yuan Youhui Yun Xinning Zeng Minzhen Zhang Peng Zhang Shibo Zhang Shu Zhang Tao Zhang Wei Zhang Yang Zhang Yingxin Zhang Yuanyuan Zhang Li Zhao Jifang Zhou Jiaxu Zhou Jiayi Zhou Ning Zhou Xiaopeng Zhou Yubo Zhou Zhizhen Zhou Haipeng An Haoming Nie School of Physics Beihang University Beijing 102206 China School of Physics and Astronomy Shanghai Jiao Tong University Key Laboratory for Particle Astrophysics and Cosmology (MoE) Shanghai Key Laboratory for Particle Physics and Cosmology Shanghai 200240 China New Cornerstone Science Laboratory Tsung-Dao Lee Institute Shanghai Jiao Tong University Shanghai 201210 China Shanghai Jiao Tong University Sichuan Research Institute Chengdu 610213 China Jinping Deep Underground Frontier Science and Dark Matter Key Laboratory of Sichuan Province China Yalong River Hydropower Development Company Ltd. 288 Shuanglin Road Chengdu 610051 China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen University Zhuhai 519082 China Department of Physics Yantai University Yantai 264005 China Key Laboratory of Nuclear Physics and Ion-beam Application (MoE) Institute of Modern Physics Fudan University Shanghai 200433 China Peng Huanwu Collaborative Center for Research and Education Beihang University Beijing 100191 China International Research Center for Nuclei and Particles in the Cosmos and Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang University Beijing 100191 China Southern Center for Nuclear-Science Theory (SCNT) Institute of Modern Physics Chinese Academy of Sciences Huizhou 516000 China SJTU Paris Elite Institute of Technology Shanghai Jiao Tong University Shanghai 200240 China School of Mechanical Engineering Shanghai Jiao Tong University Shanghai 200240 China Department of Physics University of Maryland College Park Maryland 20742 USA School of Physics Nankai University Tianjin 300071 China School of Physics Sun Yat-Sen University Guangzhou 510275 China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei 230026 China Department of Modern Physics University of Science and Technology of China Hefei 230026 China Research Center for Particle Science and Technology

We present a novel constraint on light dark matter utilizing 1.54 metric ton/year of data acquired from the PandaX-4T dual-phase xenon time projection chamber. This constraint is derived through detecting electronic recoil signals resulting from the interaction with solar-enhanced dark matter flux. Low-mass dark matter particles, lighter than a few MeV/c2, can scatter with the thermal electrons in the Sun. Consequently, with higher kinetic energy, the boosted dark matter component becomes detectable via contact scattering with xenon electrons, resulting in a few keV energy deposition that exceeds the threshold of PandaX-4T. We calculate the expected recoil energy in PandaX-4T considering the Sun’s acceleration with heavy mediators and the detection capabilities of the xenon detector. The first experimental search results using the xenon detector yield the most stringent upper limits cross section of 3.51×10−39 cm2 at 0.08 MeV/c2 for a solar boosted dark matter mass ranging from 0.02 to 10 MeV/c2, achieving a 23-fold improvement compared with earlier experimental studies.

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Model and Analysis of the top of Atmosphere’s polarization Radiation Characteristics based on Ocean Scene 3

Model and Analysis of the top of Atmosphere’s Polarization ...

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3rd International Computing imaging Conference, CITA 2023

作者： Wu, Lingxia Zeng, Xianfang Wu, Yunzhi Huang, Qinchao Huang, Qiheng Army Academy of Artillery and Air Defense of PLA Hefei Anhui230031 China Anhui Provincial Key Laboratory of Polarization Imaging Detection Technology Hefei Anhui230031 China Anhui Water Conservancy Technical College China

ISBN: (纸本)9781510671409

In view of the problem of attenuation or polarization state change caused by atmospheric radiation transmission in the long-distance path transmission of target polarization information, the atmospheric polarization characteristics based on atmospheric vector radiative transmission are studied, and the polarization characteristic modeling is completed. First using rough sea surface Cox-Munk model and Fresnel reflection law to simulate the real sea surface radiation state, determine the environmental data needed for the simulation, then based on radiation transmission simulation tools analysis of atmospheric Rayleigh scattering and aerosol scattering influence on the polarization radiation state, finally with the sea surface radiation state coupling get atmospheric top polarization radiation state. In order to verify the correctness of the proposed modeling method, the modeling results of this method are compared with the data actually obtained by the polarization detector of DPC. The results show that the overall trend and consistency of the observed and simulated values are good. This method can effectively simulate the polarization characteristics of the sea atmosphere in sunny and cloudy weather, and provide good data support for the offshore polarization detection in sunny and cloudy weather conditions. © 2023 SPIE.

关键词： Surface waters

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