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Application of Unmanned Aerial Vehicle Oblique Photogrammetry to Investigation of High Slope Rock Structure 无人机倾斜摄影测量在高边坡岩体结构勘察中的应用
武汉大学学报(信息科学版) Pub Date : 2020-11-18 DOI: 10.13203/J.WHUGIS20200077
Zhen Ye, Qiang Xu, Qian Liu, Xiu-jun Dong, Xiaochen Wang, Ningyan Hao
{"title":"Application of Unmanned Aerial Vehicle Oblique Photogrammetry to Investigation of High Slope Rock Structure","authors":"Zhen Ye, Qiang Xu, Qian Liu, Xiu-jun Dong, Xiaochen Wang, Ningyan Hao","doi":"10.13203/J.WHUGIS20200077","DOIUrl":"https://doi.org/10.13203/J.WHUGIS20200077","url":null,"abstract":"","PeriodicalId":59659,"journal":{"name":"武汉大学学报(信息科学版)","volume":"45 1","pages":"1739-1746"},"PeriodicalIF":0.0,"publicationDate":"2020-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46221844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
COVID-19 CT影像智能诊断系统 COVID-19 CT影像智能诊断系统
武汉大学学报(信息科学版) Pub Date : 2020-06-05 DOI: 10.13203/J.WHUGIS20200225
唐迁, 杜博, 恽爽, 高莉, 吴爽, 张超, 兰猛, 陈紫业, 李亮, 查云飞, 张良培, 李平湘
{"title":"COVID-19 CT影像智能诊断系统","authors":"唐迁, 杜博, 恽爽, 高莉, 吴爽, 张超, 兰猛, 陈紫业, 李亮, 查云飞, 张良培, 李平湘","doi":"10.13203/J.WHUGIS20200225","DOIUrl":"https://doi.org/10.13203/J.WHUGIS20200225","url":null,"abstract":"基于肺部CT(computed tomography)影像的人工智能诊断是针对新型冠状病毒肺炎(coronavirus disease 2019，COVID-19)的有效辅助诊断方法之一。使用神经网络以及数字图像处理等技术，设计了一个基于切片内和切片间注意力机制的轻量级COVID-19分类模型，在此基础上开发了集早期筛查、病变评估、病灶分割功能和肺部及病灶像素分布直方图等功能于一体的COVID-19智能诊断系统。通过从武汉大学人民医院采集了247名COVID-19病患、152名其他肺炎患者和92名健康者的肺部CT图像，并制作为训练数据集用于网络训练。实验结果显示，提出的方法在验证集上的筛查任务和病变评估任务上的准确率分别达到88.63%和89.65%，算法模型中每人平均诊断时间缩短到0.4 s，系统具有重要的应用价值。","PeriodicalId":59659,"journal":{"name":"武汉大学学报(信息科学版)","volume":"45 1","pages":"846-853"},"PeriodicalIF":0.0,"publicationDate":"2020-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49066626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of COVID-19 by Discrete Multi-stage Dynamics System with Time Delay 新冠肺炎的离散多阶段时滞动力学系统分析
武汉大学学报(信息科学版) Pub Date : 2020-05-05 DOI: 10.13203/J.WHUGIS20200206
Z. Liying, Liao Dongchen, Ren Jingli
{"title":"Analysis of COVID-19 by Discrete Multi-stage Dynamics System with Time Delay","authors":"Z. Liying, Liao Dongchen, Ren Jingli","doi":"10.13203/J.WHUGIS20200206","DOIUrl":"https://doi.org/10.13203/J.WHUGIS20200206","url":null,"abstract":"Coronavirus disease 2019(COVID-19) has broken out worldwide. Up to Apr.21, 2020, more than 2.45 million confirmed cases have been diagnosed, and more than 0.17 million deaths have been reported. Based on the development process of China's epidemic, this paper proposes an improved discrete-time multi-stage time-delay dynamic model to extract the transmission characteristics of epidemic, the impact of prevention and control interventions (prevention and control intervention effect) and the impact of medical resource availability, and establishes an empirical transmission dynamics method of COVID-19 analysis.Among them, the experience extraction is based on the model and the epidemic data released by World Health Organization(WHO), and realized by parameter inversion. Furthermore, by using the proposed method, this paper analyzes the epidemic stages in Italy, Spain, Germany and the United States, predicts the possible trend of epidemic situation in different countries under different measures, and gives suggestions on rapid control. Analysis results show that the China's epidemic has been basically controlled, Spain, Germany and Italy have reached the peak, and the United States is in a rapid growth period. According to the empirical transfer dynamics method, Spain, Germany and Italy should continue to adhere to the current prevention and control intervention mode, and the United States should intensify the efforts of prevention and control and make the epidemic enter the controllable stage as soon as possible.","PeriodicalId":59659,"journal":{"name":"武汉大学学报(信息科学版)","volume":"45 1","pages":"658-666"},"PeriodicalIF":0.0,"publicationDate":"2020-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44397285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Tracing the Pre-failure Two-dimensional Surface Displacements of Nanyu Landslide, Gansu Province with Radar Interferometry雷达干涉测量对甘肃南峪乡滑坡灾前二维形变追溯 Tracing the Pre-failure Two-dimensional Surface Displacements of Nanyu Landslide, Gansu Province with Radar Interferometry雷达干涉测量对甘肃南峪乡滑坡灾前二维形变追溯
武汉大学学报(信息科学版) Pub Date : 2019-01-01 DOI: 10.13203/J.WHUGIS20190092
K. Dai, G. Zhuo, Qiang Xu, Zhenhong Li, W. Li, W. Guan
{"title":"Tracing the Pre-failure Two-dimensional Surface Displacements of Nanyu Landslide, Gansu Province with Radar Interferometry雷达干涉测量对甘肃南峪乡滑坡灾前二维形变追溯","authors":"K. Dai, G. Zhuo, Qiang Xu, Zhenhong Li, W. Li, W. Guan","doi":"10.13203/J.WHUGIS20190092","DOIUrl":"https://doi.org/10.13203/J.WHUGIS20190092","url":null,"abstract":"","PeriodicalId":59659,"journal":{"name":"武汉大学学报(信息科学版)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66256548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Application of Satellite Radar Remote Sensing to Landslide Detection and Monitoring: Challenges and Solutions卫星雷达遥感在滑坡灾害探测和监测中的应用: 挑战与对策 Application of Satellite Radar Remote Sensing to Landslide Detection and Monitoring: Challenges and Solutions卫星雷达遥感在滑坡灾害探测和监测中的应用: 挑战与对策
武汉大学学报(信息科学版) Pub Date : 2019-01-01 DOI: 10.13203/J.WHUGIS20190098
Zhenhong Li, C. Song, C. Yu, R. Xiao, L. Chen, H. Luo, K. Dai, D. Ge, Y. Ding, Y. Zhang, Q. Zhang
{"title":"Application of Satellite Radar Remote Sensing to Landslide Detection and Monitoring: Challenges and Solutions卫星雷达遥感在滑坡灾害探测和监测中的应用: 挑战与对策","authors":"Zhenhong Li, C. Song, C. Yu, R. Xiao, L. Chen, H. Luo, K. Dai, D. Ge, Y. Ding, Y. Zhang, Q. Zhang","doi":"10.13203/J.WHUGIS20190098","DOIUrl":"https://doi.org/10.13203/J.WHUGIS20190098","url":null,"abstract":"","PeriodicalId":59659,"journal":{"name":"武汉大学学报(信息科学版)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66256702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 19
Grid Pattern Recognition in Street Network Space by Vector Tessellation Method 基于矢量镶嵌法的街道网络空间网格模式识别
武汉大学学报(信息科学版) Pub Date : 2018-01-01 DOI: 10.13203/J.WHUGIS20150757
Yakun He, T. Ai, Xin Du, Wenhao Yu
{"title":"Grid Pattern Recognition in Street Network Space by Vector Tessellation Method","authors":"Yakun He, T. Ai, Xin Du, Wenhao Yu","doi":"10.13203/J.WHUGIS20150757","DOIUrl":"https://doi.org/10.13203/J.WHUGIS20150757","url":null,"abstract":"","PeriodicalId":59659,"journal":{"name":"武汉大学学报(信息科学版)","volume":"43 1","pages":"138-144"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66256241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research Progress of Global High Resolution Digital Elevation Models 全球高分辨率数字高程模型研究进展与展望 Research Progress of Global High Resolution Digital Elevation Models 全球高分辨率数字高程模型研究进展与展望
武汉大学学报(信息科学版) Pub Date : 2018-01-01 DOI: 10.13203/j.whugis20180295
Zhenhong Li, P. Li, D. Ding, H. Wang
{"title":"Research Progress of Global High Resolution Digital Elevation Models 全球高分辨率数字高程模型研究进展与展望","authors":"Zhenhong Li, P. Li, D. Ding, H. Wang","doi":"10.13203/j.whugis20180295","DOIUrl":"https://doi.org/10.13203/j.whugis20180295","url":null,"abstract":"","PeriodicalId":59659,"journal":{"name":"武汉大学学报(信息科学版)","volume":"82 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66256465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
CryoSat-2 SARIn数据干涉处理及DEM获取 CryoSat-2 SARIn Data Interference Processing and DEM Acquisition
武汉大学学报(信息科学版) Pub Date : 2017-06-05 DOI: 10.13203/J.WHUGIS20150568
董玉森, ChangHsing-Chung, 张奎, 马娇, 汪舒, 孙攀
{"title":"CryoSat-2 SARIn数据干涉处理及DEM获取","authors":"董玉森, ChangHsing-Chung, 张奎, 马娇, 汪舒, 孙攀","doi":"10.13203/J.WHUGIS20150568","DOIUrl":"https://doi.org/10.13203/J.WHUGIS20150568","url":null,"abstract":"CryoSat-2搭载的合成孔径/干涉雷达高度计能够精确地探测海洋与大陆冰面高程变化，其合成孔径干涉模式（synthetic aperture interferometric mode，SARIn）提供的干涉数据可以利用传统差分干涉测量技术反演地面的高程信息，但在欧洲空间局公布的SARIn二级产品没有充分地利用这一信息。介绍了SARIn模式工作原理，并结合传统干涉测量技术，提出利用SARIn一级（level 1b，L1b）数据进行数字高程模型提取的算法和流程。通过数据质量检查，剔除数据中的错误信息；通过信号强度和相干性选择合适的解缠起点，实现干涉数据的逐行解缠；计算出卫星视角，结合卫星姿态、速度、位置和视线向距离等信息计算地面点的三维信息，最终插值生成SARIn DEM（digital elevation model）。利用该算法对2012年1月~4月的SARIn L1b数据进行干涉处理，获得了南极Lambert冰川流域局部地区的数字高程模型。通过对比ICESat DEM和RMAP DEM，表明SARIn DEM具有较高的精度，能够满足南北极等地区的高程变化研究。","PeriodicalId":59659,"journal":{"name":"武汉大学学报(信息科学版)","volume":"42 1","pages":"803-809"},"PeriodicalIF":0.0,"publicationDate":"2017-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43138196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Wide-Swath InSAR Geodesy and Its Applications to Large-Scale Deformation Monitoring 宽波段InSAR大地测量及其在大尺度变形监测中的应用
武汉大学学报(信息科学版) Pub Date : 2017-01-01 DOI: 10.13203/J.WHUGIS20150587
P. Li, Zhenhong Li, T. Li, C. Shi, J. Liu
{"title":"Wide-Swath InSAR Geodesy and Its Applications to Large-Scale Deformation Monitoring","authors":"P. Li, Zhenhong Li, T. Li, C. Shi, J. Liu","doi":"10.13203/J.WHUGIS20150587","DOIUrl":"https://doi.org/10.13203/J.WHUGIS20150587","url":null,"abstract":"","PeriodicalId":59659,"journal":{"name":"武汉大学学报(信息科学版)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66256664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Stretched boundary layer water vapor interpolation algorithm for ECMWF data [in Chinese] ECMWF数据的拉伸边界层水汽插值算法
武汉大学学报(信息科学版) Pub Date : 2015-01-01 DOI: 10.13203/J.WHUGIS20130187
C. Yang, Q. Zhang, Zhenhong Li
{"title":"Stretched boundary layer water vapor interpolation algorithm for ECMWF data [in Chinese]","authors":"C. Yang, Q. Zhang, Zhenhong Li","doi":"10.13203/J.WHUGIS20130187","DOIUrl":"https://doi.org/10.13203/J.WHUGIS20130187","url":null,"abstract":"","PeriodicalId":59659,"journal":{"name":"武汉大学学报(信息科学版)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66256425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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