期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
机载激光雷达点云分类研究进展与趋势
1
作者 王建楠 李楚钰 +3 位作者 唐廷元 李瀚琨 梁鹏 荣伟 《北京测绘》 2024年第4期603-608,共6页
机载激光雷达点云数据能为诸多行业应用提供框架性、基础性的技术支撑;点云数据也是智慧城市和实景三维(3D)中国建设的重要地理空间数据,高质量的点云分类能极大地提升地理空间数据的实体3D表征效果。因此,对机载激光雷达点云分类的技... 机载激光雷达点云数据能为诸多行业应用提供框架性、基础性的技术支撑;点云数据也是智慧城市和实景三维(3D)中国建设的重要地理空间数据,高质量的点云分类能极大地提升地理空间数据的实体3D表征效果。因此,对机载激光雷达点云分类的技术研究进展情况进行凝练和梳理则显得较为重要。本论文从基于众源地图、基于特征、基于神经网络与深度学习、基于多模态数据利用等方面对点云分类方法进行论述,归纳各种方法的技术优势和潜在问题,并对发展趋势进行了分析。在城市复杂场景的激光雷达点云分类场景中,通过嵌入光学影像、融合众源地图标注信息,结合神经网络和深度学习方法,进行全局推理的多模态数据耦合,实现对机载激光雷达点云的高效率、高精度、高准确性的分类,将是今后需要进行深入研究的方向。 展开更多
关键词 机载激光雷达 点云分类 神经网络 深度学习 多模态数据 点云语义化
下载PDF
A Cloud Service Architecture for Analyzing Big Monitoring Data 被引量:3
2
作者 Samneet Singh Yan Liu 《Tsinghua Science and Technology》 SCIE EI CAS CSCD 2016年第1期55-70,共16页
Cloud monitoring is of a source of big data that are constantly produced from traces of infrastructures,platforms, and applications. Analysis of monitoring data delivers insights of the system's workload and usage pa... Cloud monitoring is of a source of big data that are constantly produced from traces of infrastructures,platforms, and applications. Analysis of monitoring data delivers insights of the system's workload and usage pattern and ensures workloads are operating at optimum levels. The analysis process involves data query and extraction, data analysis, and result visualization. Since the volume of monitoring data is big, these operations require a scalable and reliable architecture to extract, aggregate, and analyze data in an arbitrary range of granularity. Ultimately, the results of analysis become the knowledge of the system and should be shared and communicated. This paper presents our cloud service architecture that explores a search cluster for data indexing and query. We develop REST APIs that the data can be accessed by different analysis modules. This architecture enables extensions to integrate with software frameworks of both batch processing(such as Hadoop) and stream processing(such as Spark) of big data. The analysis results are structured in Semantic Media Wiki pages in the context of the monitoring data source and the analysis process. This cloud architecture is empirically assessed to evaluate its responsiveness when processing a large set of data records under node failures. 展开更多
关键词 cloud computing REST API big data software architecture semantic web
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部