检索结果-内蒙古大学图书馆

Chinese Automation Congress (CAC)

作者： Shijie Wang Xiaodong Deng Wancheng Liu Yuhai Li Shitao Chen Longjun Liu Institute of Artificial Intelligence and Robotics (IAIR) Xi’an Jiaotong University Xi’an China Science and Technology on Electro-Optical Information Security Control Laboratory Tianjin China

Stereo depth estimation is widely applied in computer vision and intelligent robotic systems. For real-time mobile stereo vision applications, how to efficiently design and implement stereo matching on resource-limited hardware platforms is still a grand challenge. In this paper, we propose and implement a low-power, high-resolution stereo matching hardware architecture on field-programmable gate array (FPGA) with the input of structured light camera. In order to obtain high-quality point cloud data, we present an image preprocessing module and an improved cost function for stereo matching algorithm. Furthermore, we leverage hardware description language to implement our stereo matching computing architecture and all algorithm models are evaluated on the Xilinx ZCU102 development board, which only takes about 61147 LUTs and 786 BRAMs. Compared with high-performance CPUs, the computing speed is significantly improved, 1.84 times faster than Intel i7-10700@2.90GHz, and the power consumption is only 3.915W.

关键词： Costs Power demand Robot vision systems Estimation Computer architecture Hardware Real-time systems

来源：评论

学校读者我要写书评

暂无评论

Ground-to-air Defense Firepower Assignment Decision Based on Non-cooperative Game

Ground-to-air Defense Firepower Assignment Decision Based on...

引用

2021 China Automation Congress, CAC 2021

作者： Gong, Hua Cui, Mengya Zhang, Yong Sun, Wenjuan School of Science Shenyang Ligong University Shenyang110159 China School of Automation and Electrical Engineering Shenyang Ligong University Shenyang110159 China Science and Technology on Electro-Optical Information Security Control Laboratory Tianjin300308 China

ISBN: (纸本)9781665426473

The key problem of ground-to-air defense is how to make accurate and effective firepower assignment decision for attacking targets. A multi-objective optimization model of ground-to-air defense firepower assignment is established with the aim of maximizing the damage probability and minimizing the weapon consumption, and non-cooperative game theory is used to solve the problem. A non-cooperative game model is established by mapping the two objectives to players, and weapon assignment schemes to strategy profiles. An improved tabu genetic algorithm based on Nash equilibrium is designed to get the assignment scheme. Experimental results show that the proposed method has better convergence and stability than the improved genetic algorithm based on tabu search for multi-objective optimization model. © 2021 IEEE

关键词： Genetic algorithms

来源：评论

学校读者我要写书评

暂无评论

Dynamic Threat Assessment of Air multi-target Based on DBN-TOPSIS Method

Dynamic Threat Assessment of Air multi-target Based on DBN-T...

引用

2021 China Automation Congress, CAC 2021

作者： Gong, Hua Yu, Xiaoye Zhang, Yong Liu, Fang School of Science Shenyang Ligong University Shenyang110159 China School of Automation and Electrical Engineering Shenyang Ligong University Shenyang110159 China Science and Technology on Electro-Optical Information Security Control Laboratory Tianjin300308 China

ISBN: (纸本)9781665426473

In the traditional air target threat assessment, only quantitative threat degree is considered, and the target threat range assessment is missing. Aiming at the problem, a comprehensive dynamic threat assessment method is designed in this paper. This comprehensive method considers two terms of the target threat: threat degree and threat range. In terms of threat degree assessment, a dynamic Bayesian network (DBN) and a technique for order preference by similarity to an ideal solution (TOPSIS) are fused. The multi-target fusion assessment method DBN-TOPSIS is proposed. This method maps the probability of multi-target threat level obtained by dynamic Bayesian network to TOPSIS evaluation matrix. This strategy solves the problem of multi-target threat ranking. In terms of threat range assessment, a grey prediction threat range assessment method GM(1,1) is obtained. This method solves the problem of small sample threat range assessment. The experimental results show that the multi-target fusion threat assessment method is reasonable, and the target threat range can directly reflect the change of target threat degree in airspace. © 2021 IEEE

关键词： Bayesian networks

来源：评论

学校读者我要写书评

暂无评论

Weapon Target Assignment for Surface-to-air Defense with an Improved Reinforcement Genetic Algorithm

Weapon Target Assignment for Surface-to-air Defense with an ...

引用

2021 China Automation Congress, CAC 2021

作者： Gong, Hua Liu, Dalong Zhang, Yong Xu, Ke School of Science Shenyang Ligong University Shenyang110159 China School of Automation and Electrical Engineering Shenyang Ligong University Shenyang110159 China Science and Technology on Electro-Optical Information Security Control Laboratory Tianjin300308 China

ISBN: (纸本)9781665426473

Decision optimization in surface-to-air defense and coordinated weapon target assignment can improve the defense effect and the utilization rate of weapons. Considering the constraints of weapon capability, a multi-target optimization model is established to maximize the damage probability and minimize the weapon consumption cost. A dual population genetic algorithm improved by reinforcement learning is designed to solve this model. The chromosome exchange ratio is controlled by reinforcement learning to ensure population diversity. Experimental results verify the convergence speed and accuracy of the improved reinforcement genetic algorithm. © 2021 IEEE

关键词： Genetic algorithms

来源：评论

学校读者我要写书评

暂无评论

Fabrication of lithium niobate metasurfaces via a combination of FIB and ICP-RIE

引用

Chinese Optics Letters 2022年第11期20卷 95-99页

作者： Chunyan Jin Wei Wu Lei Cao Bofeng Gao Jiaxin Chen Wei Cai Mengxin Ren Jingjun Xu Key Laboratory of Weak-Light Nonlinear Photonics Ministry of EducationSchool of Physics and TEDA Applied Physics InstituteNankai UniversityTianjin 300071China Science and Technology on Electro-Optical Information Security Control Laboratory Tianjin 300308China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

Lithium niobate(LN)metasurfaces have emerged as a new platform for manipulating electromagnetic ***,we report a fabrication technique for LN nano-grating metasurfaces by combining focused ion beam(FIB)milling with inductively coupled plasma reactive ion etching(ICP-RIE).Steep sidewalls with angles larger than 80°are *** quasi-bound states in the continuum are observed from our *** measured transmission spectra show good agreement with the numerical simulations,confirming the high quality of the fabricated *** technique can be applied to fabricate the LN metasurfaces with sharp resonances for various applications in optical communications,on-chip photonics,laser physics,sensing,and so on.

关键词： lithium niobate metasurfaces fabrication FIB ICP-RIE

来源：评论

学校读者我要写书评

暂无评论

Laser Induced Nano-Hole for High Throughput Fabrication of Silver Doped Chalcogenide Metasurfaces

SSRN

引用

SSRN 2022年

作者： Zhou, Jianhong Zhao, Jianxing Cao, Lixiao Zhou, Yao Wang, Li Wang, Chonge Jing, Wenbo Zhang, Gong Yu, Ying School of Photoelectric Engineering Changchun University of Science and Technology Changchun130022 China Science and Technology on Electro-Optical Information Security Control Laboratory China Electronics Technology Group Corporation 53rd Research Institute Tianjin300308 China

We report the potential method for high throughput chalcogenide metasurface fabrication by using focused 632.8 nm laser induced nano-hole effect in the silver doped Ge28Sb12Se60 film. Generally, laser induced dewetting effect is hard to realize in thin Ge28Sb12Se60 films, however with the assistance of silver doping, the randomly distributed nano holes can be acquired in the dewetted region. The higher the silver concentration, the easier the laser induced nano-hole effect is, but much higher silver concentration like 47.8% will suppress the laser induced nano-hole effect due to the photocrystallisation. The nano holes can be enlarged and further connect with adjacent ones by increasing the output laser power, thus the morphology of the laser induced nano holes can be flexibly manipulated. Our findings are beneficial in high-throughput fabrication of chalcogenide metamaterial. © 2022, The Authors. All rights reserved.

关键词： Silver

来源：评论

学校读者我要写书评

暂无评论

A Dual-Band Metagrating for Diffraction control: Design and Experimental Demonstration

A Dual-Band Metagrating for Diffraction Control: Design and ...

引用

IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)

作者： Shan Xuan Kai Feng Jianjia Yi School of Information and Communications Engineering Xi’an Jiaotong University Xi’an China Science and Technology on Electro-Optical Information Security Control Laboratory Tianjin China State Key Laboratory of Millimeter Waves Southeast University Nanjing China

The metagratings have attracted extensive attention over the recent years as a special class of periodic metamaterials for their near-perfect electromagnetic wave manipulation through a simple and sparse array structure. In this paper, we propose a dual-band metagrating design for wide-angle reflection. The proposed structure with dual-band response can perform as one period at low frequency band and equal as two periods at high frequency band, thus realizing beam manipulation at two frequency bands by periodic conversion. The design procedure is fast, accurate and easy to implement combined with analytical design and local periodic approximation. To verify the performance of the proposed design, a dual-band printed circuit board metagrating that performs perfect anomalous reflection at 6.16 GHz and 20 GHz is designed and demonstrated.

关键词： Diffraction Printed circuits Dual band Switches Frequency conversion Microwave frequencies Reflection

来源：评论

学校读者我要写书评

暂无评论

Raman Spectra, Chemical Bonds And Dielectric Properties of Calanbwo 8 Ceramics

SSRN

引用

SSRN 2024年

作者： Li, Yingxiang Liu, Wei Pang, Xianying Xiao, Lei Oad, Ammar Peng, Sen Liang, Deyin Tang, Bin Fang, Zixuan Shi, Zitao Chen, Jingjing Wang, Fei He, Chuansheng Hou, Zegui Liu, Weichun Sun, Yuxin Xue, Yan Li, Hao College of Information Engineering Shaoyang University Shaoyang422000 China State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu611731 China School of Civil Engineering and Geomatics Southwest Petroleum University Chengdu610500 China College of Electrical and Information Engineering Hunan University Changsha410082 China Science and Technology on Electro-Optical Information Security Control Laboratory Tianjin300308 China Southwest Jiaotong University Hope College Chengdu610000 China School of Electronic and Communication Engineering Shenzhen Polytechnic Shenzhen518055 China

A novel CaLaNbWO8 (CLNWO) ceramic was prepared using traditional solid-state methods. The CLNWO ceramics that were sintered at 1440°C displayed noteworthy dielectric properties, with Εr = 11.18, Q×f = 32,998 GHz, and τf = −8.1 ppm/°C. The trends in Εr and Q×f were indirectly reflected through the Raman shift and FWHM in Raman spectroscopy. Through bond valence analysis, it was determined that Ca2+ and La3+ have significant compression effects in CLNWO ceramics, and the αc was less than αtheo. This discrepancy resulted in the Εr of CLNWO ceramics being less than Εtheo. According to Phillips-Vechten-Levine (P-V-L) theory, the W-O bond primarily determined τf, and Q×f, whereas Εr was noticeably influenced by the La-O bond. © 2024, The Authors. All rights reserved.

关键词： Raman scattering

来源：评论

学校读者我要写书评

暂无评论

Efficient Multi-Stage Network with Pixel-Wise Degradation Prediction for Real-Time Motion Deblurring

SSRN

引用

SSRN 2022年

作者： Hao, Zeyu Wang, Hang Zhang, Xuchong Li, Yuhai Sun, Hongbin Institute of Artificial Intelligence and Robotics Xi’an Jiaotong University Shaanxi Xi’an710049 China School of Microelectronics Xi’an JiaoTong University Shaanxi Xi’an710049 China Science and Technology on Electro-Optical Information Security Control Laboratory Tianjin300308 China

Motion deblurring is an indispensable task in perceptual systems because motion blur can seriously influence the visual effect and the quality of subsequent perception tasks. In practical application, efficiency and effect of motion deblurring are both important. However, among the existing methods, there is no design that can meet the real-time and visual quality requirements at the same time. Thus, an efficient motion deblurring network is proposed by leveraging multi-stage pixel-wise degradation prediction. Specifically, some lightweight modules are designed to accelerate processing while attention and multi-scale mechanism are introduced to maintain quality. In addition, a pixel-wise degradation prediction module and a spatial-channel compensation module are further employed to improve the deblurring quality, such as the distortion of moving objects in the restoration images. Extensive experimental results show that the proposed network can achieve the same PSNR level as the SOTA lightweight deblurring methods and is far faster (5.3 times for DMPHN, 6.7 times for IFI-RNN). Therefore, the proposed design achieves a balance between quality and speed compared with the existing methods. © 2022, The Authors. All rights reserved.

关键词： Pixels

来源：评论

学校读者我要写书评

暂无评论

Fast Fourier single-pixel imaging based on Sierra–Lite dithering algorithm

引用

Chinese Physics B 2019年第6期28卷 189-194页

作者： Zhen-Yu Liang Zheng-Dong Cheng Yan-Yan Liu Kuai-Kuai Yu Yang-Di Hu National University of Defense Technology State Key Laboratory of Pulsed Power Laser TechnologyHefei 230037China Science and Technology on Electro-Optical Information Security Control Laboratory Tianjin 300000China

The single-pixel imaging(SPI) technique is able to capture two-dimensional(2 D) images without conventional array sensors by using a photodiode. As a novel scheme, Fourier single-pixel imaging(FSI) has been proven capable of reconstructing high-quality images. Due to the fact that the Fourier basis patterns(also known as grayscale sinusoidal patterns)cannot be well displayed on the digital micromirror device(DMD), a fast FSI system is proposed to solve this problem by binarizing Fourier pattern through a dithering algorithm. However, the traditional dithering algorithm leads to low quality as the extra noise is inevitably induced in the reconstructed images. In this paper, we report a better dithering algorithm to binarize Fourier pattern, which utilizes the Sierra–Lite kernel function by a serpentine scanning method. Numerical simulation and experiment demonstrate that the proposed algorithm is able to achieve higher quality under different sampling ratios.

关键词： single-pixel imaging binary Fourier basis pattern the dithering algorithm

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：