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Surface defect detection competition with a bio-inspired vision sensor

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National Science Review 2023年第6期10卷 31-34页

作者： Anjing Guo Jupo Ma Renwei Dian Fuyan Ma jinjian wu Shutao Li School of Robotics Hunan University School of Artificial Intelligence Xidian University Pazhou Laboratory (Huangpu) College of Electrical and Information Engineering Hunan University Key Laboratory of Visual Perception and Artificial Intelligence of Hunan Province

INTRODUCTION Surface defects are inevitable during the product manufacturing process,such as impurities,scratches and dirt.D efects not only reduce the aesthetics and comfort of products,but may also degrade the functional *** are very concerned about inadequate defect detection because of potential economic and reputation ***,it is significant to study automatic defect detection *** machine vision-based defect detection mostly adopts a traditional CCD or CMOS vision sensor (VS) for ***,in real-world production lines,due to dynamic environments,traditional VS encounters difficulties in meeting the demands of defect detection,especially in modern high-precision product manufacturing.

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Ouyang,Z.Y.(Ed.),*** Geologic Map Series of the Moon(including Map Quadrangles of the Geologic Atlas of the Moon&Geologic Atlas of the Lunar Globe).Geological Publishing House,Beijing,China.

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Geoscience Frontiers 2024年第6期15卷 545-546页

作者： Yajun Liu jinjian wu Shigang Zhang Geological Publishing House Beijing 100083China

The publication of the Geologic Map Series of the Moon(including Map Quadrangles of the Geologic Atlas of the Moon&Geologic Atlas of the Lunar Globe)was supported by the National Publication Foundation(China),and was selected as part of the“13th Five-Year”National Key Publications Publishing Planning *** Geologic Map Series of the Moon was completed based on scientific exploration data from China’s Chang’e Project and other existing lunar geological information and research *** this mapping project,the“Three Eons and Six Periods”of the lunar time scale based on the geological evolution history of the Moon was first proposed,expressing 14 types of structure that are formed by endogenic or exogenic processes,17 types of lithology that are formed by endogenic processes,and 11 types of crater materials or *** addition,the technical requirements and standards for the compilation of geologic maps of the Moon were systematically formulated with independent intellectual property rights.

关键词： Map Globe formations

No-Reference Quality Assessment of Enhanced Images

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China Communications 2016年第9期13卷 121-130页

作者： Leida Li Wei Shen Ke Gu jinjian wu Beijing Chen Jianying Zhang School of Information and Electrical Engineering China University of Mining and Technology School of Computer Engineering Nanyang Technological University School of Electronic Engineering Xidian University School of Computer and Software Nanjing University of Information Science and Technology

Image enhancement is a popular technique,which is widely used to improve the visual quality of *** image enhancement has been extensively investigated,the relevant quality assessment of enhanced images remains an open problem,which may hinder further development of enhancement *** this paper,a no-reference quality metric for digitally enhanced images is *** kinds of features are extracted for characterizing the quality of enhanced images,including non-structural information,sharpness and ***,a total of 42 perceptual features are extracted and used to train a support vector regression(SVR) ***,the trained SVR model is used for predicting the quality of enhanced *** performance of the proposed method is evaluated on several enhancement-related databases,including a new enhanced image database built by the *** experimental results demonstrate the efficiency and advantage of the proposed metric.

关键词： image enhancement quality assessment no-reference perceptual feature SVR

Genesis of the Jianbeigou Gold Deposit on the Southern Margin of the North China Craton: Insights from Fluid Inclusions, H-O-S Isotopes, and Pyrite in situ Trace Element Analyses

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Acta Geologica Sinica(English Edition) 2024年第4期98卷 969-991页

作者： LI Fengchun ZENG Qingdong ZHU Rixiang CHU Shaoxiong XIE Wei YU Bing wu jinjian LI Xinghui Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for Earth Science Chinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China School of Earth Science and Engineering Hebei University of EngineeringHandanHebei 056038China

The Jianbeigou gold deposit is a typical lode gold deposit in the Qinling metallogenic belt, located on the southern margin of the North China Craton. Three stages of the hydrothermal process can be distinguished, including the quartz ± pyrite, quartz-polymetallic sulfide, and quartz-carbonate ± pyrite stages. From the early to late stages, the homogenization temperatures of primary fluid inclusions are 281–362°C, 227–331°C, and 149–261°C, respectively. The corresponding salinities estimated for these fluids are 3.9–9.9 wt%, 0.4–9.4 wt%, and 0.7–7.2 wt% Na Cl equiv. Combined with laser Raman spectroscopy data, the ore-forming fluid belongs to a H_(2)O-CO_(2)-Na Cl ± CH_4 system with medium–low temperature and salinity. The δ~(18)Ofluid and δD values for the quartz veins are-1.0‰ to 6.0‰ and-105‰ to-84‰, respectively, which indicates that the ore-forming fluid is of mixed source, mainly derived from magma, with a contribution from meteoric water. Pyrite has been identified into three generations based on mineral paragenetic sequencing, including Py1, Py2, and Py3. The pyrites have δ~(34)S sulfur isotopic compositions from three stages between 3.7‰ and 8.4‰, indicating that sulfur mainly originated from magma. Te, Bi, Sb, and Cu contents in pyrite were all high and showed a strong correlation with Au concentrations. Native gold and the Au-Ag-Bi telluride minerals were formed concurrently, and the As concentration was low and decoupled from the Au content. Therefore, Te, Bi, Sb and other low-melting point chalcophile elements play an important role for gold mineralization in arsenic-deficient ore-forming fluid. Combined with the geological setting, evolution of pyrite, and ore-fluids geochemistry, we propose that the Jianbeigou deposit can be classified as a magmatic–hydrothermal lode gold deposit. Gold mineralization on the southern margin of the North China Craton is related to Early Cretaceous magmatism and formed in an extensional setting.

关键词： ore genesis H-O-S isotopes fluid inclusions in-situ trace element Jianbeigou gold deposit

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仿生动态成像系统研究

航天返回与遥感 2021年第6期42卷 82-94页

作者：杨文马居坡吴金建西安电子科技大学人工智能学院西安电子科技大学西安710071

与传统相机相比,仿生动态相机具有成像速度快、时间分辨率高、动态范围大等特性,可在极端光照条件和高速运动场景下有效生成情报信息,在无人驾驶、智慧交通、航空航天侦测等领域具有巨大的应用潜力。文章首先介绍了仿生动态视觉传感器... 详细信息

与传统相机相比,仿生动态相机具有成像速度快、时间分辨率高、动态范围大等特性,可在极端光照条件和高速运动场景下有效生成情报信息,在无人驾驶、智慧交通、航空航天侦测等领域具有巨大的应用潜力。文章首先介绍了仿生动态视觉传感器的成像原理和研究进展,然后分析了基于仿生传感器的动态成像系统及关键技术,包括从低层次的视觉(信号去噪)到高层次的视觉(识别、检测、重建)任务,最后针对仿生动态成像系统的应用情况,总结了仿生成像技术的研究挑战与发展趋势。

关键词：类脑智能异步传感器高动态范围高时间分辨率仿生动态相机成像系统技术进展

原子吸收光谱法测定空气悬浮颗粒物与烟尘中的铅、镉

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福建分析测试 2005年第3期14卷 2228-2229,2251页

作者：吴金建三明市环境保护科学研究所福建三明365000

本文用HCl+HNO3+H2O2消解处理采集在滤膜(或滤筒)上的悬浮颗粒物(或烟尘)样品,火焰原子吸收光谱法测定试液中的铅、镉,方法快速、简便、结果准确。

关键词：空气悬浮颗粒物烟尘测定火焰原子吸收光谱法铅镉

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全强风化花岗岩大断面隧道施工技术研究

铁道勘察 2018年第4期44卷 100-104页

作者：吴金建泉州德化厦沙高速公路有限公司福建泉州362000

某富水软岩大断面隧道屡次发生地表塌陷。对其变形原因进行分析,结合初始施工方案,对此隧道施工过程中控制围岩变形的施工技术进行研究。研究结果表明:根据地质条件转换CD法、CRD法、三台阶七步法等开挖工法,采取中管棚辅以双排小导管... 详细信息

某富水软岩大断面隧道屡次发生地表塌陷。对其变形原因进行分析,结合初始施工方案,对此隧道施工过程中控制围岩变形的施工技术进行研究。研究结果表明:根据地质条件转换CD法、CRD法、三台阶七步法等开挖工法,采取中管棚辅以双排小导管进行超前支护,利用地表径向注浆加固等措施,可提高大断面隧道施工过程中的结构稳定性,有效控制围岩变形。

关键词：富水全强风化花岗岩大断面隧道地表塌陷开挖工法支护技术

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面向事件相机的轻量化脉冲识别网络

中国科学：信息科学 2023年第7期53卷 1333-1347页

作者：刘昭辛吴金建石光明赵庆行西安电子科技大学人工智能学院西安710071 琶洲实验室(黄埔) 广州510555

事件相机是一种用脉冲表达信息的仿生成像传感器,具有高时域分辨率、高动态范围、低功耗和高速率等优势.由于事件驱动特性,传统人工神经网络(artificial neural networks,ANN)无法直接处理事件相机输出的脉冲信号.而脉冲神经网络(spikin... 详细信息

事件相机是一种用脉冲表达信息的仿生成像传感器,具有高时域分辨率、高动态范围、低功耗和高速率等优势.由于事件驱动特性,传统人工神经网络(artificial neural networks,ANN)无法直接处理事件相机输出的脉冲信号.而脉冲神经网络(spiking neural network,SNN)作为一种神经形态计算方法,具有高时域分辨率及事件驱动的特性,这与事件相机高度契合.但是,深层脉冲神经网络需要消耗大量存储空间以及神经元计算资源,严重限制了其在边缘计算场景的部署.本文基于特征维度映射原理,提出面向嵌入式系统的轻量化脉冲神经网络,降低存储需求、提高运行效率并提高网络性能.首先,通过分析网络参数量与网络拟合功能间的关系,明确了约束脉冲神经网络能力的参数瓶颈问题.随后,基于低维特征提取–融合策略提出一种通用轻量化特征提取结构SpikeFire,该模块在保证感受野和特征维度等基本性质不变的前提下大幅减少了网络参数.此外,模拟脑神经元复杂连接特性,模块中采用跳层连接,这既增加多尺度信息提取又有助于深层次网络的优化.最后,将本文所提轻量化网络部署在嵌入式硬件中,开发出了事件驱动的成像识别一体化系统.实验表明,无论是在公开数据集还是自建真实场景和极端成像场景中,所提方法在保证识别性能的前提下大幅减少了参数量并提高运行速度.

关键词：脉冲神经网络事件相机轻量化网络特征融合嵌入式硬件

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聚氨酯预聚体改性双酚A型氰酸酯树脂的研究

材料导报 2015年第24期29卷 36-39页

作者：吕婕姜丽吴金剑汤嘉陵四川大学高分子科学与工程学院成都610065

采用差示扫描量热法(DSC)研究了聚氨酯预聚体改性双酚A型氰酸树脂的固化行为及工艺,通过动态热机械分析(DMA)、热重分析(TGA)、介电性能和冲击强度测试对其玻璃化转变温度(Tg)、耐热性、介电性能和韧性进行了研究。结果表明,聚氨酯预聚... 详细信息

采用差示扫描量热法(DSC)研究了聚氨酯预聚体改性双酚A型氰酸树脂的固化行为及工艺,通过动态热机械分析(DMA)、热重分析(TGA)、介电性能和冲击强度测试对其玻璃化转变温度(Tg)、耐热性、介电性能和韧性进行了研究。结果表明,聚氨酯预聚体的加入可以很好地提高氰酸酯的韧性,当预聚体加入量为20%(质量分数)时,改性氰酸酯树脂的冲击强度达到最大值15.3kJ/m2,比纯氰酸酯树脂提高了218%。改性氰酸酯树脂的T_g逐渐降低,预聚体加入量为氰酸酯质量的40%时,T_g降低为193℃,仍然具有较低的介电常数和介电损耗。

关键词：聚氨酯预聚体氰酸酯树脂韧性介电性能