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基于激光雷达技术在城市三维建筑模型中的分析应用 被引量:1
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作者 孙涛 王毅 张蓓 《黑龙江科技信息》 2015年第35期182-183,共2页
通过数字城市项目的工程实践,基于激光雷达的三维真实纹理三维模型的建立显得尤为重要,本文着重阐述利用激光雷达技术进行数字城市中三维建筑物建模,使用纹理映射的方法进行模型纹理粘贴。
关键词 数字城市:激光雷达:纹理映射:三维
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考虑高斯能量分布的复杂表面航天器激光雷达散射特性分析 被引量:1
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作者 程勋龙 康国华 +3 位作者 邱钰桓 武俊峰 吴佳奇 尹一蓁 《上海航天(中英文)》 CSCD 2024年第1期57-65,共9页
针对复杂表面航天器在激光雷达照射下散射特性模拟不准的问题,通过表面建模和激光特性修正进行了解决。该方法首先通过高斯能量分布法对激光光束模型进行修正;然后基于有限元的思想,针对航天器复杂表面非光滑、非连续以及多材质等特性,... 针对复杂表面航天器在激光雷达照射下散射特性模拟不准的问题,通过表面建模和激光特性修正进行了解决。该方法首先通过高斯能量分布法对激光光束模型进行修正;然后基于有限元的思想,针对航天器复杂表面非光滑、非连续以及多材质等特性,利用改进Z-buffer的消隐算法解决了复杂航天器表面建模问题;最后建立了面向激光雷达的复杂表面航天器激光雷达散射截面的计算方法。仿真分析表明:航天器不同姿态下的激光雷达散射截面精度提升了14 58%,为后续面向激光雷达的隐身设计奠定了基础。 展开更多
关键词 激光隐身 激光散射特性 激光雷达(Lidar) Z缓冲技术 高斯能量分布
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基于ROS机器视觉的辅助驾驶系统设计
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作者 曾仕峰 吴锦均 +2 位作者 叶智文 赖怡雯 叶妙欣 《电脑知识与技术》 2020年第26期173-175,共3页
随着社会科技的发展和人工智能时代的来临,辅助驾驶技术逐渐走进人们的视野,开始在社会中发挥作用。为了进一步解决在人为驾驶中存在的主观因素的交通隐患问题,本项目紧跟目前已有的"机器学习+路径规划"技术设计一种基于ROS... 随着社会科技的发展和人工智能时代的来临,辅助驾驶技术逐渐走进人们的视野,开始在社会中发挥作用。为了进一步解决在人为驾驶中存在的主观因素的交通隐患问题,本项目紧跟目前已有的"机器学习+路径规划"技术设计一种基于ROS机器视觉设计的智能辅助驾驶系统。本设计运用激光雷达结合GPS模块的导航定位技术精确定位辅助驾驶系统的位置并规划行进路线,再结合“激光雷达+景深摄像头”可实现系统的环境数据采集和做出规避。 展开更多
关键词 激光雷达建模 路径规划 景深摄像头 Open CV机器识别
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Bibliometric Analysis of Global Research Progress on Coastal Flooding 1995–2016 被引量:2
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作者 GAO Chao RUAN Tian 《Chinese Geographical Science》 SCIE CSCD 2018年第6期998-1008,共11页
Global research progress on coastal flooding was studied using a bibliometric evaluation of publications listed in the Web of Science extended scientific citation index. There was substantial growth in coastal floodin... Global research progress on coastal flooding was studied using a bibliometric evaluation of publications listed in the Web of Science extended scientific citation index. There was substantial growth in coastal flooding research output, with increasing publications, a higher collaboration index, and more references during the 1995–2016 period. The USA has taken a dominant position in coastal flooding research, with the US Geological Survey leading the publications ranking. Research collaborations at institutional scales have become more important than those at global scales. International collaborative publications consistently drew more citations than those from a single country. Furthermore, coastal flooding research included combinations of multi-disciplinary categories, including ‘Geology' and ‘Environmental Sciences & Ecology'. The most important coastal flooding research sites were wetlands and estuaries. While numerical modeling and 3 S(Remote sensing, RS; Geography information systems, GIS; Global positioning systems, GPS) technology were the most commonly used methods for studying coastal flooding, Lidar gained in popularity. The vulnerability and adaptation of coastal environments, their resilience after flooding, and ecosystem services function showed increases in interest. 展开更多
关键词 coastal flood scientific outputs bibliometric analysis research trends Web of Science
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Skyline-Based Registration of 3D Laser Scans
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作者 Andreas Nüchter Stanislav Gutev +1 位作者 Dorit Borrmann Jan Elseberg 《Geo-Spatial Information Science》 2011年第2期85-90,共6页
Acquisition and registration of terrestrial 3D laser scans is a fundamental task in mapping and modeling of cities in three dimensions. To automate this task marker-flee registration methods are required. Based on the... Acquisition and registration of terrestrial 3D laser scans is a fundamental task in mapping and modeling of cities in three dimensions. To automate this task marker-flee registration methods are required. Based on the existence of skyline features, this paper proposes a novel method. The skyline features are extracted from panoramic 3D scans and encoded as strings enabling the use of string matching for merging the scans. Initial results of the proposed method in the old city center of Bremen are presented. 展开更多
关键词 LIDAR point cloud processing 3D city modeling marker-free registration place recognition
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