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一种基于多尺度的目标检测锚点构造方法 被引量:1
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作者 邵延华 黄琦梦 +3 位作者 梅艳莹 张晓强 楚红雨 吴亚东 《红外技术》 CSCD 北大核心 2024年第2期162-167,共6页
目标检测是计算机视觉领域的研究热点和基础任务,其中基于锚点(Anchor)的目标检测已在众多领域得到广泛应用。当前锚点选取方法主要面临两个问题:基于特定数据集的先验取值尺寸固定、面对不同场景泛化能力弱。计算锚框的无监督K-means算... 目标检测是计算机视觉领域的研究热点和基础任务,其中基于锚点(Anchor)的目标检测已在众多领域得到广泛应用。当前锚点选取方法主要面临两个问题:基于特定数据集的先验取值尺寸固定、面对不同场景泛化能力弱。计算锚框的无监督K-means算法,受初始值影响较大,对目标尺寸较单一的数据集聚类产生的锚点差异较小,无法充分体现网络多尺度输出的特点。针对上述问题,本文提出一种基于多尺度的目标检测锚点构造方法(multi-scale-anchor,MSA),将聚类产生的锚点根据数据集本身的特性进行尺度的缩放和拉伸,优化的锚点即保留原数据集的特点也体现了模型多尺度的优势。另外,本方法应用在训练的预处理阶段,不增加模型推理时间。最后,选取单阶段主流算法YOLO(You Only Look Once),在多个不同场景的红外或工业场景数据集上进行丰富的实验。结果表明,多尺度锚点优化方法MSA能显著提高小样本场景的检测精度。 展开更多
关键词 目标检测 锚点 红外 YOLO(You Only Look Once) 多尺度分析
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基于图像低维特征融合的航拍小目标检测模型 被引量:1
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作者 蔡逢煌 张家翔 黄捷 《模式识别与人工智能》 EI CSCD 北大核心 2024年第2期162-171,共10页
针对无人机航拍图像目标检测中视野变化大、时空信息复杂等问题,文中基于YOLOv5(You Only Look Once Version5)架构,提出基于图像低维特征融合的航拍小目标检测模型.引入CA(Coordinate Attention),改进MobileNetV3的反转残差块,增加图... 针对无人机航拍图像目标检测中视野变化大、时空信息复杂等问题,文中基于YOLOv5(You Only Look Once Version5)架构,提出基于图像低维特征融合的航拍小目标检测模型.引入CA(Coordinate Attention),改进MobileNetV3的反转残差块,增加图像空间维度信息的同时降低模型参数量.改进YOLOv5特征金字塔网络结构,融合浅层网络中的特征图,增加模型对图像低维有效信息的表达能力,进而提升小目标检测精度.同时为了降低航拍图像中复杂背景带来的干扰,引入无参平均注意力模块,同时关注图像的空间注意力与通道注意力;引入VariFocal Loss,降低负样本在训练过程中的权重占比.在VisDrone数据集上的实验验证文中模型的有效性,该模型在有效提升检测精度的同时明显降低复杂度. 展开更多
关键词 YOU ONLY Look ONCE Version5(YOLOv5) 小目标检测 注意力机制 损失函数
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基于ID-YOLO的数字仪表检测方法
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作者 翟永杰 徐蔚 +3 位作者 韩宇辰 杨珂 赵宽 白云山 《科学技术与工程》 北大核心 2024年第16期6775-6782,共8页
当前针对数字式仪表检测算法在边缘设备具有实时性差、泛化性差的问题,对此提出一种采用ID-YOLO(instrument detection-you only look once)模型的变电站数字仪表检测识别方法。所提算法以YOLOv5模型为基础,首先设计轻量骨干网络(light ... 当前针对数字式仪表检测算法在边缘设备具有实时性差、泛化性差的问题,对此提出一种采用ID-YOLO(instrument detection-you only look once)模型的变电站数字仪表检测识别方法。所提算法以YOLOv5模型为基础,首先设计轻量骨干网络(light weight-YOLO, LW-YOLO)提取图像特征,降低网络参数,提高检测实时性;然后设计了一种双级路由注意力模块(bi-level routing attention moudle, BRAM),提高网络对小数点的检测精度以及网络的鲁棒性和泛化性;最后,引入损失函数α-IoU,通过设定不同的可调节参数α数值得到更准确的真实框与预测框的交并比计算,可以提高模型的检测精度。结果表明:相比于其他基于深度学习的数字仪表检测识别方法,所提方法在不同显示方式的数字仪表识别任务上具有更好的准确性和泛化性,而且可以在检测准确率领先的情况下,将模型在边缘设备上的检测速度从6.87帧/s提升至8.77帧/s,其实时性和检测精度均能够满足实际变电站智能数据采集、检测识别的工程需要。 展开更多
关键词 数字仪表 YOLO(you only look once) 边缘设备 目标检测 轻量化
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基于深度学习YOLOX算法的混凝土构件裂缝智能化检测方法
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作者 刘珂铖 谢群 李雁军 《济南大学学报(自然科学版)》 CAS 北大核心 2024年第3期341-349,共9页
针对现有混凝土构件裂缝人工检测操作不仅费时、费力,而且易出现错检、误检、漏检,以及部分位置难以开展检测的问题,提出一种基于深度学习YOLOX(You Only Look Once)算法的混凝土构件裂缝智能化检测方法;首先采集、整理包含各类混凝土... 针对现有混凝土构件裂缝人工检测操作不仅费时、费力,而且易出现错检、误检、漏检,以及部分位置难以开展检测的问题,提出一种基于深度学习YOLOX(You Only Look Once)算法的混凝土构件裂缝智能化检测方法;首先采集、整理包含各类混凝土构件的典型裂缝图像,并通过图像数据增强建立Pascal VOC数据集,然后基于Facebook公司开发的深度学习框架Pytorch,利用数据集训练YOLOX算法,并进行裂缝识别和验证;将训练完成后YOLOX算法移植至搭载安卓系统的手机端,进行现场实时检测操作。结果表明:在迭代次数为700时,混凝土构件裂缝识别精度可达88.84%,能有效筛分混凝土构件表面裂缝,并排除其他干扰项,证明了所提出的方法对裂缝具有较高的识别精度和广泛的适用性;经试验测试,移植至手机端的YOLOX算法能在提升便携性的同时保证高效、准确的检测效果,具有良好的应用前景。 展开更多
关键词 深度学习 YOLOX(You Only Look Once)算法 混凝土构件 裂缝识别
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Postdoctoral Openings in Wenzhou University(China)for Chemistry,Chemical Engineering and Materials Science
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《Carbon Energy》 SCIE EI CAS CSCD 2024年第9期I0001-I0001,共1页
About us:The College of Chemistry and Materials Engineering(CME)in Wenzhou University(Zhejiang Province,China)is looking for postdoctoral candidates(up to 25)specialized in Chemistry,Chemnical Engineering and Material... About us:The College of Chemistry and Materials Engineering(CME)in Wenzhou University(Zhejiang Province,China)is looking for postdoctoral candidates(up to 25)specialized in Chemistry,Chemnical Engineering and Materials Science.The college has its Chemistry program ranking ESI Top 6‰ worldwide,and Materials Science program ranking 589th in the world since 2023. 展开更多
关键词 specialized DOCTOR LOOKING
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Uphold the Original Intention and Work together for Future Development——Speech at the 35th Anniversary Symposium of BES
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作者 Junshi Chen 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2024年第6期563-564,共2页
Time flies,in the blink of an eye,it is already 2023.The journal Biomedical and Environmental Sciences(BES)has been established for thirty-five years.Today,I am honored to participate in the BES’s 35th anniversary sy... Time flies,in the blink of an eye,it is already 2023.The journal Biomedical and Environmental Sciences(BES)has been established for thirty-five years.Today,I am honored to participate in the BES’s 35th anniversary symposium,organized by the Chinese Center for Disease Control and Prevention(China CDC).Seeing Director Hongbing Shen,Deputy Director Xiaoming Shi,along colleagues from the center’s affiliated units and departments,as well as fellow researchers,we have come together for this symposium under the theme of“Looking back and looking forward”,I am not only deeply appreciative and thankful,but also envisioning a bright future for BES in the next 35 years.I would like to share my thoughts and hopes under the theme of“Review and Development”. 展开更多
关键词 THANK Director looking
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Benchmarking YOLOv5 models for improved human detection in search and rescue missions
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作者 Namat Bachir Qurban Ali Memon 《Journal of Electronic Science and Technology》 EI CAS CSCD 2024年第1期70-80,共11页
Drone or unmanned aerial vehicle(UAV)technology has undergone significant changes.The technology allows UAV to carry out a wide range of tasks with an increasing level of sophistication,since drones can cover a large ... Drone or unmanned aerial vehicle(UAV)technology has undergone significant changes.The technology allows UAV to carry out a wide range of tasks with an increasing level of sophistication,since drones can cover a large area with cameras.Meanwhile,the increasing number of computer vision applications utilizing deep learning provides a unique insight into such applications.The primary target in UAV-based detection applications is humans,yet aerial recordings are not included in the massive datasets used to train object detectors,which makes it necessary to gather the model data from such platforms.You only look once(YOLO)version 4,RetinaNet,faster region-based convolutional neural network(R-CNN),and cascade R-CNN are several well-known detectors that have been studied in the past using a variety of datasets to replicate rescue scenes.Here,we used the search and rescue(SAR)dataset to train the you only look once version 5(YOLOv5)algorithm to validate its speed,accuracy,and low false detection rate.In comparison to YOLOv4 and R-CNN,the highest mean average accuracy of 96.9%is obtained by YOLOv5.For comparison,experimental findings utilizing the SAR and the human rescue imaging database on land(HERIDAL)datasets are presented.The results show that the YOLOv5-based approach is the most successful human detection model for SAR missions. 展开更多
关键词 Unmanned aerial vehicle(UAV) Search and rescue(SAR) You look only once(YOLO)model You only look once version 5 (YOLOv5)
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Embracing the Year of the Dragon
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作者 KEITH BENNETT 《China Today》 2024年第2期30-32,共3页
The Lunar New Year has increasingly become a common festival of people throughout the world.CHINESE people,and people throughout the world,are looking forward to welcoming the Year of the Dragon,which falls on Februar... The Lunar New Year has increasingly become a common festival of people throughout the world.CHINESE people,and people throughout the world,are looking forward to welcoming the Year of the Dragon,which falls on February 10,2024.The Dragon is considered the most auspicious of the 12 signs in the Chinese zodiac and this year is specifically the Year of the Wood Dragon,the first since 1964.According to Lifestyle Asia,“Wood Dragons enjoy fulfilling careers.They’re likely to materialize all their ambitions into actions,coming up with truly revolutionary ideas.” 展开更多
关键词 LOOKING HAS LIKELY
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The Return of Civilisations
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作者 Miguel Angel Moratinos 《International Understanding》 2024年第1期20-24,共5页
I was pleasantly surprised when visiting the new Louvre Museum in Abu Dhabi,magnificently designed,and created by the great French architect Jean Nouvel to prove the creative force of the world's diverse civilisat... I was pleasantly surprised when visiting the new Louvre Museum in Abu Dhabi,magnificently designed,and created by the great French architect Jean Nouvel to prove the creative force of the world's diverse civilisations.All of them are represented in this imaginative space on the island of Saadiyat overlooking the Persian Gulf. 展开更多
关键词 LOOKING ISLAND CREATIVE
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Chinese Documentaries
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《China Today》 2024年第11期67-67,共1页
My Homuseum Chief Director:Wang Yu Length:12 Episodes Producers:bilibili,Dahuoer Broadcasting Platform:bilibili My Homuseum is the first documentary series to showcase the private collections of urban young people.Ran... My Homuseum Chief Director:Wang Yu Length:12 Episodes Producers:bilibili,Dahuoer Broadcasting Platform:bilibili My Homuseum is the first documentary series to showcase the private collections of urban young people.Ranging from traditional craftsmanship,technological processes,and rare antiques to ethnic costumes,each episode displays a collection and tells the story of the passion of the collectors behind it.By looking into the inner world of young collectors. 展开更多
关键词 DIRECTOR LOOKING COLLECTION
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Consumption and Culturonomics
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作者 ZHOU LIN 《China Today》 2024年第4期31-34,共4页
Lawmakers testify to the power of culture combined with tourism to spur economic growth and enhance the confidence of the nation.“Cultural economics.”That was President Xi Jinping’s thrust in his discussions with f... Lawmakers testify to the power of culture combined with tourism to spur economic growth and enhance the confidence of the nation.“Cultural economics.”That was President Xi Jinping’s thrust in his discussions with fellow deputies to the National People’s Congress(NPC)from Jiangsu Province during last year’s NPC session.Economically developed provinces generally see a cultural boom,he said.“It is worthwhile looking into the reason behind it.” 展开更多
关键词 discussions LOOKING CULTURE
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Exchanges,Mutual Learning and Looking Forward to the Future The Exhibition of Oil Paintings of China and Five Central Asian Countries
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作者 Qin Tingting 《China & The World Cultural Exchange》 2024年第3期28-33,共6页
Exchanges and mutual learning between the Chinese and foreign civilizations are an important part of human cultural development.The Chinese civilization adopts an all-embracing,open and inclusive attitude to understan... Exchanges and mutual learning between the Chinese and foreign civilizations are an important part of human cultural development.The Chinese civilization adopts an all-embracing,open and inclusive attitude to understand the different views of different civilizations on the connotation of values.The ancient Silk Road has opened a new window of friendship between countries and written a new chapter in the development of mankind. 展开更多
关键词 LOOKING mutual CIVILIZATION
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Yundang Lake Gets Epic Facelift
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作者 XIA YUANYUAN 《China Today》 2024年第1期56-58,共3页
The transformation of Yundang Lake from a stinky lake to an urban reception hall has made it a showcase of ecologival restoration in China.BEFORE settling down in the City of Xiamen,Scott Patrick and his wife spent lo... The transformation of Yundang Lake from a stinky lake to an urban reception hall has made it a showcase of ecologival restoration in China.BEFORE settling down in the City of Xiamen,Scott Patrick and his wife spent long hours searching online for just the right part of the city.When they saw Yundang Lake in west Xiamen,the couple knew they had hit the jackpot.“The picture of the beautiful lake circled by lush vegetation caught our attention.We knew this was the place we were looking for,”said Patrick.Later,after setting foot in Xiamen,he told himself he had definitely made the right life decision. 展开更多
关键词 XIAMEN SETTLING LOOKING
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Yundang Lake Gets Epic Facelift
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作者 Xia Yuanyuan 《China Report ASEAN》 2024年第4期48-49,共2页
Before settling down in the city of Xiamen,Scott Patrick and his wife spent long hours searching online for just the right part of the city.When they saw Yundang Lake in west Xiamen,the couple knew they had hit the ja... Before settling down in the city of Xiamen,Scott Patrick and his wife spent long hours searching online for just the right part of the city.When they saw Yundang Lake in west Xiamen,the couple knew they had hit the jackpot.“The picture of the beautiful lake circled by lush vegetation caught our attention.We knew this was the place we were looking for,”said Patrick.Later,after setting foot in Xiamen,he told himself he had definitely made the right life decision. 展开更多
关键词 XIAMEN SETTLING LOOKING
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《五个孩子和沙精》(节选)
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作者 Edith Nesbit 《疯狂英语(新读写)》 2024年第10期46-48,76,共4页
五个孩子在沙坑里玩的时候,幸运地遇上了沙精。沙精能帮助孩子们实现任何愿望,但每个愿望只能持续一天,太阳一落山,愿望便会消失……主题语境:文学作品篇幅:447词建议用时:6分钟。1 The children felt strange for a minute and when th... 五个孩子在沙坑里玩的时候,幸运地遇上了沙精。沙精能帮助孩子们实现任何愿望,但每个愿望只能持续一天,太阳一落山,愿望便会消失……主题语境:文学作品篇幅:447词建议用时:6分钟。1 The children felt strange for a minute and when they looked,they saw that they had beautiful soft wings of many colors. 展开更多
关键词 BEAUTIFUL MANY 文学作品 主题语境 look
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A Letter to Zhong Nanshan
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作者 董佳宜 闫明(指导) 《疯狂英语(初中天地)》 2024年第10期71-71,共1页
Dear Grandpa Zhong,You are my hero and the person I learn from.I really can’t tell how much I respect and love you.You have spent your life in the field of medicine.You have devoted yourself to medical research and l... Dear Grandpa Zhong,You are my hero and the person I learn from.I really can’t tell how much I respect and love you.You have spent your life in the field of medicine.You have devoted yourself to medical research and looking after patients. 展开更多
关键词 YOURSELF REALLY LOOKING
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呵护你的眼睛
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作者 Manya Cramer 《空中英语教室(初级版.大家说英语)》 2024年第6期9-11,50,共4页
Your eyes are an importantpart of your body.You need to take care of them and keep them healthy.First,have a good diet.Eating good food gives your eyes important vitamins.Wear sunglasses to protect your eyes from UV r... Your eyes are an importantpart of your body.You need to take care of them and keep them healthy.First,have a good diet.Eating good food gives your eyes important vitamins.Wear sunglasses to protect your eyes from UV rays.Take breaks from looking at your computer or phone.Looking at a screen can make your eyes tired. 展开更多
关键词 GLASSES LOOKING VITAMIN
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European futureproofing for Eton Systems and Kinnarps
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《China Textile》 2024年第4期30-31,共2页
To meet rising demand for its fully automated and digitised fabric and part handling solutions,Eton Systems-a member of TMAS,the Swedish textile machinery association-has just moved into modernised new premises in Bor... To meet rising demand for its fully automated and digitised fabric and part handling solutions,Eton Systems-a member of TMAS,the Swedish textile machinery association-has just moved into modernised new premises in Bor?s.The company was founded in 1967 in Bor?s-widely known as Sweden's textile city and home to worldwide brands and companies,as well as the prestigious Swedish School of Textiles-as a result of future-looking research and development at shirt maker Eton Shirts. 展开更多
关键词 COMPANIES LOOKING SWEDISH
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Mammut:The brand's path to innovation
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《China Textile》 2024年第2期15-15,共1页
The perfect jacket for anyone looking for a technical allrounder.The Alto Guide is perfect for everything from day hikes to first adventures in mountaineering.Durable stretch Mammut DRYtechnology^(TM)Pro 3-layer mater... The perfect jacket for anyone looking for a technical allrounder.The Alto Guide is perfect for everything from day hikes to first adventures in mountaineering.Durable stretch Mammut DRYtechnology^(TM)Pro 3-layer material is breathable,waterproof and PFC-free.Multiple features,which include backpack-compatible front pockets,a helmet-compatible hood with reinforced peak,and a 2-way zipper for easy climbing harness access,make the hard-wearing Alto Guide an ideal weatherproof jacket for mountain and hiking tours.A smart choice for your mountain sport adventures:technical,functional and durable. 展开更多
关键词 PERFECT LOOKING SMART
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MEDIA WATCH
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《ChinAfrica》 2024年第9期7-7,共1页
ARK OF ARCHITECTURE Sanlian Lifeweek 29 July Jindongnan,which refers to the southeast part of Shanxi Province,has always held a special place in the history of ancient Chinese architecture.Nestled deep in the western ... ARK OF ARCHITECTURE Sanlian Lifeweek 29 July Jindongnan,which refers to the southeast part of Shanxi Province,has always held a special place in the history of ancient Chinese architecture.Nestled deep in the western highlands of the Taihang Mountains,the region boasts a colossal reserve of ancient relics.By looking at these classical structures,one can trace the evolution of architecture through the vast expanse of time. 展开更多
关键词 SOUTHEAST LOOKING ANCIENT
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