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Semantic segmentation of camouflage objects via fusing reconstructed multispectral and RGB images
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作者 Feng Huang Gonghan Yang +5 位作者 Jing Chen Yixuan Xu Jingze Su Guimin Huang Shu Wang Wenxi Liu 《Defence Technology(防务技术)》 2025年第8期324-337,共14页
Accurate segmentation of camouflage objects in aerial imagery is vital for improving the efficiency of UAV-based reconnaissance and rescue missions.However,camouflage object segmentation is increasingly challenging du... Accurate segmentation of camouflage objects in aerial imagery is vital for improving the efficiency of UAV-based reconnaissance and rescue missions.However,camouflage object segmentation is increasingly challenging due to advances in both camouflage materials and biological mimicry.Although multispectral-RGB based technology shows promise,conventional dual-aperture multispectral-RGB imaging systems are constrained by imprecise and time-consuming registration and fusion across different modalities,limiting their performance.Here,we propose the Reconstructed Multispectral-RGB Fusion Network(RMRF-Net),which reconstructs RGB images into multispectral ones,enabling efficient multimodal segmentation using only an RGB camera.Specifically,RMRF-Net employs a divergentsimilarity feature correction strategy to minimize reconstruction errors and includes an efficient boundary-aware decoder to enhance object contours.Notably,we establish the first real-world aerial multispectral-RGB semantic segmentation of camouflage objects dataset,including 11 object categories.Experimental results demonstrate that RMRF-Net outperforms existing methods,achieving 17.38 FPS on the NVIDIA Jetson AGX Orin,with only a 0.96%drop in mIoU compared to the RTX 3090,showing its practical applicability in multimodal remote sensing. 展开更多
关键词 Camouflage object detection Reconstructed multispectral image(MSI) Unmanned aerial vehicle(UAV) Semantic segmentation Remote sensing
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Oriented Bounding Box Object Detection Model Based on Improved YOLOv8 被引量:1
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作者 ZHAO Xin-kang SI Zhan-jun 《印刷与数字媒体技术研究》 CAS 北大核心 2024年第4期67-75,114,共10页
In the study of oriented bounding boxes(OBB)object detection in high-resolution remote sensing images,the problem of missed and wrong detection of small targets occurs because the targets are too small and have differ... In the study of oriented bounding boxes(OBB)object detection in high-resolution remote sensing images,the problem of missed and wrong detection of small targets occurs because the targets are too small and have different orientations.Existing OBB object detection for remote sensing images,although making good progress,mainly focuses on directional modeling,while less consideration is given to the size of the object as well as the problem of missed detection.In this study,a method based on improved YOLOv8 was proposed for detecting oriented objects in remote sensing images,which can improve the detection precision of oriented objects in remote sensing images.Firstly,the ResCBAMG module was innovatively designed,which could better extract channel and spatial correlation information.Secondly,the innovative top-down feature fusion layer network structure was proposed in conjunction with the Efficient Channel Attention(ECA)attention module,which helped to capture inter-local cross-channel interaction information appropriately.Finally,we introduced an innovative ResCBAMG module between the different C2f modules and detection heads of the bottom-up feature fusion layer.This innovative structure helped the model to better focus on the target area.The precision and robustness of oriented target detection were also improved.Experimental results on the DOTA-v1.5 dataset showed that the detection Precision,mAP@0.5,and mAP@0.5:0.95 metrics of the improved model are better compared to the original model.This improvement is effective in detecting small targets and complex scenes. 展开更多
关键词 Remote sensing image oriented bounding boxes object detection Small target detection YOLOv8
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一种改进Oriented RepPoints的遥感图像有向目标检测
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作者 谢国波 张家源 +1 位作者 林志毅 廖文康 《小型微型计算机系统》 CSCD 北大核心 2024年第11期2725-2731,共7页
为解决Oriented RepPoints算法在遥感图像有向目标检测中因遥感图像背景干扰信息较多和目标尺度大小不一所导致的检测精度不高、易漏检误检等问题,提出一种改进Oriented RepPoints的遥感图像有向目标检测方法MA-RPDet(Mixed Attention R... 为解决Oriented RepPoints算法在遥感图像有向目标检测中因遥感图像背景干扰信息较多和目标尺度大小不一所导致的检测精度不高、易漏检误检等问题,提出一种改进Oriented RepPoints的遥感图像有向目标检测方法MA-RPDet(Mixed Attention RepPoints Detector).首先,采用了PVTv2作为主干网络,该网络利用线性空间缩减自注意力机制提取出更具局部连续性的特征图,并保持与卷积运算类似的线性复杂度.其次,在特征融合阶段设计了串联性混合注意力模块,进一步强化了重要特征,促进了多尺度特征的高效交互.最后,引入平滑GIoU损失函数对模型学习策略进行优化,提高了检测精度.在两个遥感图像目标检测数据集DOTA和HRSC2016上的实验结果表明,所提方法的检测精度mAP分别达到了77.19%和90.3%,均高于其他对比算法,证明了本文方法的有效性. 展开更多
关键词 遥感图像 有向目标检测 oriented RepPoints 注意力机制 损失函数
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A Study on the Design for Object-Oriented Adaptive Decision-Making Teams 被引量:2
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作者 Xiao Bing, Qu Tan & Wang Mingzhe Huazhong University of Science and Technology, Wuhan 430074,P.R. China 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2002年第1期68-73,共6页
The modern war features a highly distributed coordination. In the face of great time constrains, it is important to change command organizations to adapt to the real environment. Therefore it's a key step to set u... The modern war features a highly distributed coordination. In the face of great time constrains, it is important to change command organizations to adapt to the real environment. Therefore it's a key step to set up adaptive C2 teams. In this paper, the relational problems about distributed C2 organizational structure adaptation are discussed, and the methodology for team decision making design based on the object oriented technique is studied. 展开更多
关键词 Adaptation Decision making team Colored Petri net object oriented.
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Real-time object segmentation based on convolutional neural network with saliency optimization for picking 被引量:1
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作者 CHEN Jinbo WANG Zhiheng LI Hengyu 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2018年第6期1300-1307,共8页
This paper concerns the problem of object segmentation in real-time for picking system. A region proposal method inspired by human glance based on the convolutional neural network is proposed to select promising regio... This paper concerns the problem of object segmentation in real-time for picking system. A region proposal method inspired by human glance based on the convolutional neural network is proposed to select promising regions, allowing more processing is reserved only for these regions. The speed of object segmentation is significantly improved by the region proposal method.By the combination of the region proposal method based on the convolutional neural network and superpixel method, the category and location information can be used to segment objects and image redundancy is significantly reduced. The processing time is reduced considerably by this to achieve the real time. Experiments show that the proposed method can segment the interested target object in real time on an ordinary laptop. 展开更多
关键词 convolutional neural network object detection object segmentation superpixel saliency optimization
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Automatic salient object segmentation using saliency map and color segmentation 被引量:1
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作者 HAN Sung-ho JUNG Gye-dong +2 位作者 LEE Sangh-yuk HONG Yeong-pyo LEE Sang-hun 《Journal of Central South University》 SCIE EI CAS 2013年第9期2407-2413,共7页
A new method for automatic salient object segmentation is presented.Salient object segmentation is an important research area in the field of object recognition,image retrieval,image editing,scene reconstruction,and 2... A new method for automatic salient object segmentation is presented.Salient object segmentation is an important research area in the field of object recognition,image retrieval,image editing,scene reconstruction,and 2D/3D conversion.In this work,salient object segmentation is performed using saliency map and color segmentation.Edge,color and intensity feature are extracted from mean shift segmentation(MSS)image,and saliency map is created using these features.First average saliency per segment image is calculated using the color information from MSS image and generated saliency map.Then,second average saliency per segment image is calculated by applying same procedure for the first image to the thresholding,labeling,and hole-filling applied image.Thresholding,labeling and hole-filling are applied to the mean image of the generated two images to get the final salient object segmentation.The effectiveness of proposed method is proved by showing 80%,89%and 80%of precision,recall and F-measure values from the generated salient object segmentation image and ground truth image. 展开更多
关键词 salient object visual attention saliency map color segmentation
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Object-Oriented Design for FDTD Visual Scientific Computing
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作者 Dong, X. Wang, W. Wang, G. 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2001年第3期71-75,共5页
A scheme for general purposed FDTD visual scientific computing software is introduced in this paper using object-oriented design (OOD) method. By abstracting the parameters of FDTD grids to an individual class and sep... A scheme for general purposed FDTD visual scientific computing software is introduced in this paper using object-oriented design (OOD) method. By abstracting the parameters of FDTD grids to an individual class and separating from the iteration procedure, the visual software can be adapted to more comprehensive computing problems. Real-time gray degree graphic and wave curve of the results can be achieved using DirectX technique. The special difference equation and data structure in dispersive medium are considered, and the peculiarity of parameters in perfectly matched layer are also discussed. 展开更多
关键词 Computational methods Computer aided design Data structures Difference equations Finite difference method Iterative methods Natural sciences computing object oriented programming Parameter estimation Three dimensional computer graphics Time domain analysis
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Artificial Intelligence Embedded Object-Oriented Methodology For Model Based Decision Support 被引量:1
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作者 Feng Shan Tian Yuan Li Tong & Cai Jun (Institute of System Engineering, Department of Automatic Control Engineering Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China) 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 1996年第1期1-14,共14页
The paper presents the coupling of artificial intelligence-AI and Object-oriented methodology applied for the construction of the model-based decision support system MBDSS.The MBDSS is designed for support the strate... The paper presents the coupling of artificial intelligence-AI and Object-oriented methodology applied for the construction of the model-based decision support system MBDSS.The MBDSS is designed for support the strategic decision making lead to the achievemellt of optimal path towardsmarket economy from the central planning situation in China. To meet user's various requirements,a series of innovations in software development have been carried out, such as system formalization with OBFRAMEs in an object-oriented paradigm for problem solving automation and techniques of modules intelligent cooperation, hybrid system of reasoning, connectionist framework utilization,etc. Integration technology has been highly emphasized and discussed in this article and an outlook to future software engineering is given in the conclusion section. 展开更多
关键词 Artificial intelligence object-oriented methodology Knowledge-based systems Intelligently cooperative systems Neural nets Case hased reasoning Behavioral science Advancedautomation.
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ENTITY-ROLES MODEL AND OBJECT-ORIENTED KNOWLEDGE/DATA BASES
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作者 Pan Jiuhui Liu Zhimin Wang Yunyi(Department of Computer Science, Central South University of Technology, Changsha, 410083, China) 《Journal of Central South University》 SCIE EI CAS 1994年第1期74-77,共4页
A Model, called 'Entity-Roles' is proposed in this paper in which the world of Interest is viewed as some mathematical structure. With respect to this structure, a First order (three-valued) Logic Language is ... A Model, called 'Entity-Roles' is proposed in this paper in which the world of Interest is viewed as some mathematical structure. With respect to this structure, a First order (three-valued) Logic Language is constructured.Any world to be modelled can be logically specified in this Language. The integrity constraints on the database and the deducing rules within the Database world are derived from the proper axioms of the world being modelled. 展开更多
关键词 EXPERT systems data model object-orientATION database logic deductive QUERY
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An AI Embedded Object-Oriented Approach for Formulating Computable General Equilibrium
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作者 Li Tong (Department of Automatic Control Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China) Chen Shuheng (Department of Economics, National Chengchi University, Taipei, 11623) Feng Shan (Department of Automatic Control 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2000年第1期14-21,共8页
This paper proposes and illustrates an AI embedded object-oriented methodology to formulate the computable general equilibrium (CGE) models. In this framework, a CGE model is viewed as a collection of objects embedd... This paper proposes and illustrates an AI embedded object-oriented methodology to formulate the computable general equilibrium (CGE) models. In this framework, a CGE model is viewed as a collection of objects embedded AI or namely agents in computer world, corresponding to economic agents and entities in real world, such as government, households, markets and so on. A frame representation of major objects in CGE model is used for trade and environment. Embedded Al object-oriented approach (or software agent) is used in the CGE model representation can able to narrow the gap among the semantic representation, formal CGE (mathematical) representation and computer and algorithm representation, and to improve CGE in understanding and maintenance etc. In such a system, constructing a CGE model to appear an intuitive process rather than an abstract process. This intuitive process needs more understanding of the substance of economics and the logic underlying the problem rather than mathematical notation. 展开更多
关键词 Computable general equilibrium Artificial intelligence object-oriented method Agents.
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Product Family Design Methodology Using Object-Oriented Approach
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作者 WANG Ai-min, MENG Ming-chen, HUANG Jing-yuan (Department. of Precision Instruments and Mechanology, Tsinghua Univers ity, Beijing 100084, China) 《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 2002年第S1期141-142,共2页
The serious competition environment of global marke t requests the enterprise to change traditional product development strategy and a dopt new theory in order to meet diverse customer needs while maintaining near m a... The serious competition environment of global marke t requests the enterprise to change traditional product development strategy and a dopt new theory in order to meet diverse customer needs while maintaining near m ass production efficiency, which is the main philosophy of mass customization. P roduct family design is research focus at present and also is the core technolog y of DFMC (design for mass customization). Firstly, this paper explores the fund amental issues of product family, such as concepts of modularity, commonality/di versity, product platform and product family architecture etc. We compare the te rminology between product family and object-oriented approach in the next step. Thirdly, this paper puts forwards one product family design methodology based o n product platform and under different phase of product life cycle constrains, f or example, functional, assembly and service etc. At the end section of this pap er, we applied, the object-oriented approach in above mentioned product family design methodology to realize the design process. In one word, this paper propos ed one product family design methodology based on object oriented approach and p roduct life cycle consideration, especially the conjointness of characteristic o f OOA and concepts of product family. The main property of OOA are encapsulation , inherence and polymorphism. Encapsulation can represent the module or building blocks of product family. Inherence can be extended to describe the modularity and commonality, and also be used to construct variant space. Alternative specif ic of product family architecture can be embodied with polymorphism. And fin aly, we give the future work contents. In order to derive the product platform a nd achieve modularity and commonality/diversity, interface management between bu ilding block is necessary. The question is how the OOA can be applied in interfa ce management to get our aim OOA is the basis of many information management sy stem, then the question is how to build one system to manage the information of product family and support mass customization The third question is how to deve lop one computer aided tool to facilitate the application of OOA for product fam ily design, even be used to category of design for mass customization. 展开更多
关键词 product family design product platform object- oriented approach (OOA) product life cycle
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CRF:A Scheduling of Multi-Granularity Locks in Object-Oriented Database Systems
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作者 Qin Xiao & Pang Liping(Department of Computer Science, Huazhong University of Science and Technology,Wuhan 430074, P. R. China) 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 1998年第4期51-57,共7页
This paper introduces a multi-granularity locking model (MGL) for concurrency control in object-oriented database system briefiy, and presents a MGL model formally. Four lockingscheduling algorithms for MGL are propos... This paper introduces a multi-granularity locking model (MGL) for concurrency control in object-oriented database system briefiy, and presents a MGL model formally. Four lockingscheduling algorithms for MGL are proposed in the paper. The ideas of single queue scheduling(SQS) and dual queue scheduling (DQS) are proposed and the algorithm and the performance evaluation for these two scheduling are presented in some paper. This paper describes a new idea of thescheduling for MGL, compatible requests first (CRF). Combining the new idea with SQS and DQS,we propose two new scheduling algorithms called CRFS and CRFD. After describing the simulationmodel, this paper illustrates the comparisons of the performance among these four algorithms. Asshown in the experiments, DQS has better performance than SQS, CRFD is better than DQS, CRFSperforms better than SQS, and CRFS is the best one of these four scheduling algorithms. 展开更多
关键词 Lock scheduling Multi-granularity lock Concurrency control Compatible requestsfirst Single queue scheduling Dual queue scheduling object-oriented database system
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Fast interactive segmentation algorithm of image sequences based on relative fuzzy connectedness 被引量:1
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作者 Tian Chunna Gao Xinbo 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2005年第4期750-755,共6页
A fast interactive segmentation algorithm of image-sequences based on relative fuzzy connectedness is presented. In comparison with the original algorithm, the proposed one, with the same accuracy, accelerates the seg... A fast interactive segmentation algorithm of image-sequences based on relative fuzzy connectedness is presented. In comparison with the original algorithm, the proposed one, with the same accuracy, accelerates the segmentation speed by three times for single image. Meanwhile, this fast segmentation algorithm is extended from single object to multiple objects and from single-image to image-sequences. Thus the segmentation of multiple objects from complex hackground and batch segmentation of image-sequences can be achieved. In addition, a post-processing scheme is incorporated in this algorithm, which extracts smooth edge with one-pixel-width for each segmented object. The experimental results illustrate that the proposed algorithm can obtain the object regions of interest from medical image or image-sequences as well as man-made images quickly and reliably with only a little interaction. 展开更多
关键词 fuzzy connectedness interactive image segmentation image-sequences segmentation multiple objects segmentation fast algorithm.
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面向对象的无人机遥感影像区域滑坡承灾体信息提取研究 被引量:3
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作者 毛正君 李欢 +3 位作者 石硕杰 孙婕文 仲佳鑫 于海泳 《工程地质学报》 北大核心 2025年第1期171-185,共15页
采用无人机遥感获取低成本、高空间分辨率且实时的影像,并基于面向对象分类自动提取滑坡承灾体信息意义重大。本文以宁夏固原市彭阳县红河镇为研究区,基于无人机遥感获取分辨率为0.13 m的174 km^(2)正射影像,在分析其滑坡承灾体影像特征... 采用无人机遥感获取低成本、高空间分辨率且实时的影像,并基于面向对象分类自动提取滑坡承灾体信息意义重大。本文以宁夏固原市彭阳县红河镇为研究区,基于无人机遥感获取分辨率为0.13 m的174 km^(2)正射影像,在分析其滑坡承灾体影像特征后,设定实验区并采用多尺度分割和单一尺度分割两种面向对象的滑坡承灾体信息提取方法,比较了基于两种尺度分割的滑坡承灾体信息提取精度和时间效率,通过方案优化实现了研究区滑坡承灾体信息提取。结果表明:(1)通过引入反映分割结果的均质性的局部方差指数,对实验区进行多尺度分割的最优分割尺度划分,通过构建光谱、范围、形状特征规则,能够依次在不同层次上提取出相应的承灾体信息;(2)在多尺度分割的基础上结合试算设置实验区单一分割尺度,承灾体信息提取的总体精度和Kappa系数虽逊于多尺度分割但相差不大,所需时间不到多尺度分割的四分之一;(3)综合考虑研究区滑坡承灾体空间分布、影像特征信息和实验区滑坡承灾体信息提取结果,确定研究区单一分割尺度优化方案。研究结果以期为区域滑坡承灾体信息提取、滑坡风险评估及风险管理提供必要参考。 展开更多
关键词 滑坡承灾体 无人机遥感 面向对象分类 尺度分割 信息提取
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融合可见光与红外图像的光伏阵列缺陷检测 被引量:1
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作者 白晓静 徐佳伟 +3 位作者 皮宇啸 张文彪 洪烽 李佩哲 《太阳能学报》 北大核心 2025年第4期313-321,共9页
为保证光伏发电稳定、高效和安全运行,需及时检测光伏阵列的运行状况并发现存在的缺陷。提出融合可见光与红外图像的光伏阵列缺陷检测方法,采用CenterNet进行可见光图像光伏组件中太阳电池检测,采用U-Net对红外图像高温区域进行分割,提... 为保证光伏发电稳定、高效和安全运行,需及时检测光伏阵列的运行状况并发现存在的缺陷。提出融合可见光与红外图像的光伏阵列缺陷检测方法,采用CenterNet进行可见光图像光伏组件中太阳电池检测,采用U-Net对红外图像高温区域进行分割,提出区域匹配模块对可见光与红外图像进行匹配,提出关键点(PoI)聚集模块和二次分类器实现关键点处特征向量的聚集以及太阳电池缺陷分类,最后结合可见光图像异物遮挡及红外图像温度异常识别缺陷太阳电池位置及类型。选择不同网络进行测试,提出的算法在较为轻量的CenterNet和U-Net网络上太阳电池检测的AP50-95值达到84.4%,异常温度区域分割的IoU达到89.7%,且单张检测时间约为38 ms,能以较快的速度完成异常太阳电池的检测。 展开更多
关键词 太阳电池 光伏阵列 目标检测 图像分割 红外图像 可见光图像
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交叉与聚力:中华民族共同体学学科建设刍议 被引量:2
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作者 严庆 《云南民族大学学报(哲学社会科学版)》 北大核心 2025年第4期5-10,共6页
政治属性、学理属性、交叉属性、实践属性决定了加快中华民族共同体学学科建设是构建中华民族共同体理论体系和开展学科育人工作的迫切需要。作为交叉学科,中华民族共同体学具有多学科交叉融合后新的研究内容与范畴。作为独立学科,中华... 政治属性、学理属性、交叉属性、实践属性决定了加快中华民族共同体学学科建设是构建中华民族共同体理论体系和开展学科育人工作的迫切需要。作为交叉学科,中华民族共同体学具有多学科交叉融合后新的研究内容与范畴。作为独立学科,中华民族共同体学下设不同的专业方向。建设中华民族共同体需要立足实际,从聚焦议题起步,逐步形成具有中国特色的理论、知识和方法体系。 展开更多
关键词 中华民族共同体学 交叉 融合 研究对象 方向
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基于复杂施工条件的盾构法隧道通用管片拼装点位优选方法 被引量:1
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作者 胡珉 赵鹏鹏 吴秉键 《隧道建设(中英文)》 北大核心 2025年第1期77-84,共8页
管片拼装是盾构法隧道施工中的关键环节,合理的拼装点位选择对于隧道质量和施工效率至关重要。为此提出一种基于情境的管片拼装点位优选方法,通过设计点位生成器、模拟预测器和评价优选器,建立分级筛选的随境选择模型。该方法依据盾构... 管片拼装是盾构法隧道施工中的关键环节,合理的拼装点位选择对于隧道质量和施工效率至关重要。为此提出一种基于情境的管片拼装点位优选方法,通过设计点位生成器、模拟预测器和评价优选器,建立分级筛选的随境选择模型。该方法依据盾构与隧道的空间位置关系及其纠偏能力,将复杂工况划分为不同的施工情境,并针对每种情境设定相应的优化目标和权重系数。将管片拼装要求、盾尾间隙及油缸行程差等因素作为约束条件纳入优化目标中,使得管片拼装点位选择更加灵活全面和客观合理。通过上海12标右线工程仿真试验分析,证明随境选择模型在提高点位选择精度和合理性方面具有优势,与综合法、偏差法相比,随境法在不同施工情境下选择最优拼装点位时具有更好的有效性、准确性和通用性。 展开更多
关键词 管片拼装 盾构隧道 点位优选 施工情境 优化目标
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“物本位”导向下文物数字资源的知识系统建构与活化利用路径——以南京博物院“物华天宝:数字文物之美”为例
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作者 张莅坤 刘佳 张晓婉 《中国博物馆》 北大核心 2025年第4期13-20,126,共9页
南京博物院“物华天宝:数字文物之美”项目基于“物本位”逻辑,在“物的文化中介性-知识的语义建模-公众的参与式再生产”的框架下,通过高精度三维采集、知识图谱构建及语义关联技术,将文物数据转化为结构化知识网络,依托线上线下多场... 南京博物院“物华天宝:数字文物之美”项目基于“物本位”逻辑,在“物的文化中介性-知识的语义建模-公众的参与式再生产”的框架下,通过高精度三维采集、知识图谱构建及语义关联技术,将文物数据转化为结构化知识网络,依托线上线下多场景应用,实现“可感-可知-可悟”的阶梯式认知与公众参与式知识再生产。研究认为,以“物”为基础、知识系统为核心、技术为桥梁、用户参与为驱动的路径,能推动文物资源从“图像活化”向“知识活化”跨越,为解决“重采集,轻利用”与“重技术,轻内容”的文博数字化问题提供可参考的理念和路径。 展开更多
关键词 物本位 文物数字化 数字博物馆 知识图谱 知识再生产
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面向激光雷达的自动驾驶相关任务安全性综述
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作者 陈晋音 赵卓 +2 位作者 徐曦恩 项圣 郑海斌 《小型微型计算机系统》 北大核心 2025年第7期1590-1605,共16页
自动驾驶技术的迅猛发展,推动了激光雷达的应用.激光雷达以其卓越的环境感知、导航和避障能力,在自动驾驶领域扮演着关键角色.随着人工智能和深度学习技术的不断进步,三维数据处理技术取得了显著成果,并在多个场景中得到应用.然而,随着... 自动驾驶技术的迅猛发展,推动了激光雷达的应用.激光雷达以其卓越的环境感知、导航和避障能力,在自动驾驶领域扮演着关键角色.随着人工智能和深度学习技术的不断进步,三维数据处理技术取得了显著成果,并在多个场景中得到应用.然而,随着技术的应用深入,其安全性问题日益凸显,例如行驶中的车辆可能会错误识别出不存在的物体.而现有研究多聚焦于单一任务,缺乏对安全性问题的综合性论述,尤其是对后门攻击的研究相对匮乏.因此,本文首次全面评估和分析了基于激光雷达在自动驾驶中的安全性问题,特别是对抗攻击和后门攻击的挑战.文章首先阐述了激光雷达的工作原理及其在自动驾驶任务中的应用,包括目标分类、目标检测和语义分割3大类.具体而言,本综述深入探讨了55篇相关论文,系统地介绍了不同任务下的攻击方法和防御策略.进一步,本文提供了11个公共数据集、7个评估指标、7个常用模型和4个仿真平台,为研究者提供了宝贵的资源和工具.最后,文章结合当前面临的挑战与未来机遇,对激光雷达在自动驾驶安全应用的研究方向进行了前瞻性展望,旨在为激光雷达技术的安全可靠应用提供指导和参考. 展开更多
关键词 激光雷达 目标分类 语义分割 目标检测 对抗攻击 后门攻击
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基于Snake与注意力机制的船舶实例分割方法
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作者 陈晨 胡松涛 +3 位作者 马枫 赵新征 魏月楠 舒忠诚 《中国舰船研究》 北大核心 2025年第5期307-320,共14页
[目的]船舶的实例分割可服务于船舶监测、识别和跟踪等任务,支撑船舶智能航行。然而,受船舶形状尺度多变及环境因素的干扰,已有实例分割方法在船舶轮廓提取上表现不佳。为解决此问题,提出基于曲线递归的Ship Contour方法。[方法]通过改... [目的]船舶的实例分割可服务于船舶监测、识别和跟踪等任务,支撑船舶智能航行。然而,受船舶形状尺度多变及环境因素的干扰,已有实例分割方法在船舶轮廓提取上表现不佳。为解决此问题,提出基于曲线递归的Ship Contour方法。[方法]通过改进CenterNet方法提取分层特征,融合Deep Layer Aggregation-60骨干网络,兼顾精度和速度;优化Block结构、引入ECA通道注意力机制增强特征提取的能力,使用Mish激活函数代替ReLU适应深层学习;引入平移不变的轮廓变形方法、Dynamic Matching Loss损失函数加快最终轮廓的提取。[结果]在2300张样本的2023Ship-seg专用数据集上,所提出方法的准确率AP0.5:0.95达到64.0%,召回率AR0.5:0.95达到67.9%,优于主流实例分割算法。[结论]所提方法能有效提升监控与智能航行场景下的视觉处理效果。 展开更多
关键词 图像处理 图像分割 船舶实例分割 注意力机制 SNAKE模型 目标识别 特征提取
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