检索结果-内蒙古大学图书馆

10th Symposium on Novel optoelectronic Detection technology and Applications

作者： Kuang, Yanjin Zhao, Huanqing Tian, Youyuan Wu, Guanlin Qiu, Su Jin, Weiqi Zhu, Shihao Yu, Xiangzhi MOE Key Laboratory of Optoelectronic Imaging Technology and System Beijing Institute of Technology Beijing China

ISBN: (数字)9781510688155

ISBN: (纸本)9781510688148

There is an urgent need for new concept underwater observation and detection equipment in marine exploration, becoming a key development direction for marine resource detection, marine scientific research, underwater rescue, and underwater defense. With the advancement of new SPAD array technology, its application in terrestrial/underwater Lidar has gained attention. This paper addresses the issues of insufficient photoelectric imaging sensitivity and high noise under strong underwater scattering conditions by investigating an underwater micro-scanning laser single-photon imaging system based on a 32×32 avalanche photodiode (SPAD) array. The system uses a SPAD array with time-correlated single-photon counting (TCSPC) functionality combined with a high-power, high-repetition-rate blue-green laser and micro-scanning imaging methods to detect weak photon echo signals underwater. It employs 2×2 low-resolution micro-scanning imaging to achieve 64×64 micro-scanning high-resolution single-photon imaging and recognition for both terrestrial and underwater targets. Additionally, the design of the optical system, optomechanical structure, and underwater pressure-sealed tank is carried out. An underwater micro-scanning single-photon laser imaging experimental system based on the SPAD array is developed. Through imaging experiments on land and underwater, the feasibility and effectiveness of the system's technical approach are demonstrated, providing effective technical and methodological support for further detection systems in actual marine environments. © 2025 SPIE.

关键词： Avalanche photodiodes

来源：评论

学校读者我要写书评

暂无评论

Design of Wireless Video Transmission system Based on Retina-like Distributed CMOS Imager 10

Design of Wireless Video Transmission System Based on Retina...

引用

10th Symposium on Novel optoelectronic Detection technology and Applications

作者： Li, Pengcheng Cao, Fengmei MOE Key Laboratory of Optoelectronic Imaging Technology and System Beijing Institute of Technology Beijing100081 China

ISBN: (数字)9781510688155

ISBN: (纸本)9781510688148

This paper proposes the design of a wireless video transmission system based on the retina-like distributed CMOS imaging device, BIT-Retina52, aimed at addressing the issue of cable entanglement caused by wired transmission during dynamic image rotation-elimination experiments. The overall design takes the heterogeneous multi-core chip ZYNQ SoC as the main control unit to conduct co-design of hardware and software: the Programmable Logic (PL) side implements the acquisition, format conversion, and transmission of image data, while the Processing system (PS) manages data flow control, data buffering, and packetized transmission. Additionally, a Linux system was built to port the USB Wi-Fi module driver. The upper computer system was developed using the Qt framework for image reception and display. Through timing simulations and experimental validation, this design successfully achieved the stable acquisition and transmission of visible light images from the BIT-Retina52 under wireless conditions. © 2025 SPIE.

关键词： CMOS integrated circuits

来源：评论

学校读者我要写书评

暂无评论

Algorithm for de-scattering 3D images from infrared time-of-flight(ToF) cameras

Algorithm for de-scattering 3D images from infrared time-of-...

引用

2023 Advanced Fiber Laser Conference, AFL 2023

作者： Lu, Taoran Qiu, Su Wang, Hui Key Laboratory of Optoelectronic Imaging Technology and System of the Ministry of Education Beijing Institute of Technolog Beijing100081 China

ISBN: (纸本)9781510677661

An algorithm for mitigating the interference of scattering media in Time of Flight (ToF) cameras during imaging is proposed. This algorithm addresses the issues of decreased image quality, reduced contrast, and loss of depth information. The method is based on atmospheric background light prior knowledge and outlier handling. Firstly, a threshold segmentation is applied to the depth histogram of the image to eliminate the interference of backscattered light. Secondly, an image restoration algorithm based on the atmospheric background light prior is used to remove interference from the image. Finally, outliers in the restored image are removed to obtain the final processed image. Experimental results show that the proposed algorithm improves the peak signal-To-noise ratio, structural similarity, image information entropy, and the number of matched feature points by an average of 9.21 dB, 10.02%, 0.83, and 12, respectively, compared to the original algorithm. This validates the effectiveness and superiority of the proposed algorithm. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Cameras

来源：评论

学校读者我要写书评

暂无评论

Reconstruction of high-resolution depth profiling from single-photon data based on PCA 7

Reconstruction of high-resolution depth profiling from singl...

引用

Real-time Photonic Measurements, Data Management, and Processing VII 2023

作者： Wang, Hui Qiu, Su Lu, Taoran MOE Key Laboratory of Optoelectronic Imaging Technology and System Beijing Institute of Technology Beijing China

ISBN: (纸本)9781510667938

The high sensitivity and picosecond temporal resolution of single-photon avalanche diode (SPAD) make it the preferred single-photon detector in extreme imaging environments. Extreme imaging environments (e.g., underwater high-scattering environments) usually result in low signal-to-noise ratios of the acquired single-photon data, which leads to poor quality of image reconstruction, so it is necessary to propose a high-resolution single-photon three-dimensional reconstruction algorithm for extreme imaging environments. Principal component analysis (PCA) is widely used and robust, which is suitable for dimensionality reduction and noise reduction processing of single-photon data with sparse and noisy characteristics. Under the premise that the target data has a strong correlation with the background and random noise, the target feature extraction of the single-photon data is carried out by PCA, the principal components are used to reconstruct the original data, the relative position and size of the original data are effectively retained, the redundant information is removed, and the single-photon data is reconstructed using cross-correlation and ManiPoP algorithms to achieve high-resolution single-photon depth profile reconstruction. © 2023 SPIE.

关键词： Principal component analysis

来源：评论

学校读者我要写书评

暂无评论

TrinityMag:A novel magnetically actuated miniature robot manipulating system with a human-scale workspace

引用

Science China(Technological Sciences) 2024年第11期67卷 3546-3558页

作者： LI Dong CHEN BinHan HUANG ChenYang XU Sheng WU XinYu XU TianTian Guangdong Provincial Key Laboratory of Robotics and Intelligent System Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China Key Laboratory of Biomedical Imaging Science and System Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

The development of the magnetic manipulating system is essential for applications of magnetically actuated miniature robots in biomedical practice,such as targeted therapy and precise ***,the workspaces of existing magnetic manipulating systems for miniature robots are mostly insufficient to manipulate miniature robots inside human *** present study proposes an innovative electromagnets-based manipulating system,TrinityMag,which can produce dynamic three-dimensional(3D)magnetic fields in a human-scale spherical workspace with a 2.6 m *** magnetic field of a single electromagnet is simulated,and a new calibration technic is designed based on deep learning ***,the arrangement of three electromagnets is optimized to produce maximal 3D arbitrary magnetic fields with limited ***,a target-tracking algorithm is developed so that the TrinityMag can track the miniature robot in real ***,the TrinityMag is validated in experiments to manipulate a soft millirobot to move in human-scale tortuous tracks with two types of *** maximum speed of the soft millirobot reaches 11.05 body length/*** work contributes to a significant increment in the workspace of the electromagnets-based manipulating system for miniature *** further expect that the TrinityMag could push the applications of miniature robots from laboratory to clinical practice.

关键词： magnetic manipulating system human-scale workspace magnetically actuated miniature robots

来源：评论

学校读者我要写书评

暂无评论

Infrared image super-resolution reconstruction based on residual fast fourier transform

引用

Multimedia Tools and Applications 2025年第9期84卷 6805-6823页

作者： Li, Xianguo Liu, Rui Yang, Yanli School of Electronics and Information Engineering Tiangong University Tianjin China Tianjin Key Laboratory of Optoelectronic Detection Technology and System Tianjin China

Infrared images have been widely used in military, civilian, and industrial fields. Due to the inherent limitations of sensors, infrared images usually have some disadvantages such as low resolution and blurred texture details. How to improve the resolution of infrared images without changing hardware devices has become a current research hotspot. Aiming at the problem that the existing infrared image super-resolution reconstruction methods do not utilize the image details sufficiently, this paper proposes an infrared image super-resolution reconstruction algorithm based on residual fast fourier transform(ISRRFT). The image features are extracted in both spatial domain and frequency domain, so as to fully extract the high-frequency and low-frequency information components of infrared images and improve the quality of reconstructed infrared images In addition, the learnable fast fourier transform loss function has been introduced, which is used in conjunction with the L1 loss function to calculate the loss from both the spatial and frequency domains, thus better optimizing the model parameters. The test results on three test sets, SR1280, IRData and Infrared20, show that the proposed algorithm has an optimal performance in terms of both objective and subjective evaluation metrics compared to current representative algorithms. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.

关键词： Image reconstruction

来源：评论

学校读者我要写书评

暂无评论

Thickness Measurement of Single-Mode Fiber Coating Layer Based on Forward Brillouin Scattering

引用

IEEE Sensors Journal 2025年第11期25卷 19332-19340页

作者： Zhang, Yongqi Wang, Tao Liu, Yijia Liu, Li Zhang, Mingjiang Taiyuan University of Technology Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education College of Physics and Optoelectronic Engineering Taiyuan030024 China Taiyuan University of Technology Shanxi Key Laboratory of Precision Measurement Physics The College of Physics and Optoelectronic Engineering Taiyuan030024 China

The coating layer is essential for protecting and applying optical fibers. Nowadays, the thickness measurement of the coating layer relies on point measurement schemes, such as the side-looking light distribution method and mechanical method. However, there are some problems with the above methods, such as the tradeoff between resolution and field of view (FOV), the cutting of the measurement position, and the long measurement time. To overcome these problems, we propose a new method based on forward Brillouin scattering (FBS), which measures the coating layer thickness of single mode fibers (SMFs). The physical properties of the transverse acoustic field involved in FBS make it possible to measure the thickness of the fiber coating. The corresponding relationship between the transverse acoustic mode frequency and the diameter of the coating layer can be calculated. The coating layer thickness can be measured with high precision by measuring the frequency spectrum of FBS corresponding to multiple transverse acoustic modes at a given temperature. In the verification experiment, three types of SMF coated with polyimide are used as the sensing fiber to measure the thickness of the coating layer at multiple temperatures. The experimental results show that the error in the coating layer thickness obtained is less than 0.05 μm. To the best of our knowledge, this is the first demonstration of nondestructive, high-precision monitoring of fiber coating thickness. © 2025 IEEE.

关键词： Acoustic field measurement

来源：评论

学校读者我要写书评

暂无评论

Unrolling Reweighted Total Variation-Based Split Bregman Iterative Framework for Electrical Impedance Tomography Image Reconstruction

IEEE Transactions on Computational Imaging

引用

IEEE Transactions on Computational imaging 2025年 11卷 748-763页

作者： Wang, Zichen Zhang, Tao Wang, Qi Tiangong University School of Electronic and Information Engineering Tianjin300387 China Tiangong University Tianjin Key Laboratory of Optoelectronic Detection Technology and System Tianjin300387 China

Electrical impedance tomography (EIT) is one of the typical ill-posed inverse problems, where serious ill-posedness and the linear approximation of the forward operator lead to obvious distortions and artifacts in the degraded reconstructions, further limiting its practical application. The learning-based strategies with image enhancement have been introduced into EIT reconstruction and also achieved improvements. Nevertheless, this idea ignores the priori knowledge of physical information, while not fully exploiting data consistency, resulting in poor generalization and interpretability. In this work, a reweighted Split Bregman (SB) iterative algorithm is proposed regularized by total variation firstly, referred to as RwTVSB. Moreover, the RwTVSB iteration is unrolled into a neural network-based learning framework, dubbed as RwTVSB-Net. The reweighted matrix is introduced to the SB iteration, which could overcome the loss of information of the forward operator due to the linear approximation and also enhance the constraints of the physical priori. Specifically, (1) a network based on residual connection and SE-attention is designed to update the reweighted matrix. (2) Further, a U-shaped architecture with deformable large kernel convolution, dilated convolution, and cross-attention is embedded into this unrolling framework to learn the soft threshold operator. This not only maintains consistency with the RwTVSB iterative algorithm but also uses multi-scale features to fusion information at multiple levels. Both simulated and real-world measured data are employed to validate the effectiveness and advantages of the proposed RwTVSB-Net. The visual reconstructions and quantitative metrics show that RwTVSB-Net outperforms other state-of-the-art methods. In addition, the robustness of the method is tested and validated on multiple imaging tasks. © 2015 IEEE.

关键词： Electric impedance tomography

来源：评论

学校读者我要写书评

暂无评论

Structural Damage Detection and Localization Using Response Difference Transmissibility

引用

Journal of Shanghai Jiaotong university(Science) 2024年第6期29卷 1126-1138页

作者： WANG Zengwei DING Lei Shanghai Institute of Technical Physics Key Laboratory of Infrared System Detection and Imaging TechnologyChinese Academy of SciencesShanghai 200083China

In this paper,a novel method is proposed for structural damage detection and *** key of the proposed method is the use of the response difference transmissibility(RDT)for damage *** RDT is defined to relate response differences of the system to be evaluated and those of the original *** invariance properties of RDT are also *** on this,a damage indicator is proposed,and the benefits are verified by a numerical ***,the proposed method is illustrated and validated by finite element simulations and experimental case studies.

关键词： damage detection damage localization transmissibility mechanical vibrations

来源：评论

学校读者我要写书评

暂无评论

ResGNN-OPC: a fast optical proximity correction approach based on an interpretable residual graph neural network

引用

Applied Optics 2025年第15期64卷 4227-4234页

作者： Liu, Jingqing Ma, Xu Key Laboratory of Photoelectronic Imaging Technology System of Ministry of Education of China School of Optics and Photonics Beijing Institute of Technology Beijing100081 China

Optical proximity correction (OPC) is a pivotal resolution enhancement technique that compensates for the image distortion in the optical lithography process. However, the turn-around time of modern OPC techniques, namely model-based OPC (MBOPC), increases dramatically as the lithography technology node constantly pushes forward. This paper develops a learning-based OPC approach using the residual graph neural network, dubbed ResGNN-OPC, to achieve more than 6000-fold acceleration compared to the conventional MBOPC. The residual network structure is integrated in the graph convolution layer to emulate each iteration of the MBOPC algorithm and to facilitate the increment of the network depth, thereby enhancing the network’s interpretability and fitting ability. The superiorities of the proposed method are verified by numerical experiments. Compared to the existing learning-based OPC approach, the proposed method improves the prediction accuracy of OPC corrections by more than 40% and costs comparable runtime. In addition, ResGNN-OPC can output the final OPC solution with fewer or even no subsequent iteration steps but can still achieve similar image fidelity as the MBOPC approach. © 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.

关键词： Graph neural networks

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：