...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Correction of Mobile TLS Intensity Data for Water Leakage Spots Detection in Metro Tunnels
【24h】

Correction of Mobile TLS Intensity Data for Water Leakage Spots Detection in Metro Tunnels

机译：校正移动TLS强度数据以检测地铁隧道中的漏水点

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Terrestrial laser scanning (TLS) can accurately and thoroughly document the actual geometrical deformations and surface conditions of metro tunnel structures using high-density point clouds. In addition, TLS can record the backscattered intensity values of each point simultaneously. Backscattered intensity values are significant measures of the spectral property of scanned objects in the near-infrared region of the electromagnetic spectrum. The intensity values of water leakage regions are theoretically lower than those of the background because of the high water absorption coefficient in the near-infrared spectrum. Thus, the intensity data can be used in water leakage detection and quantitative analysis. This letter investigates the feasibility of a new mobile system called Faro Focus3D X330 for data collection, processing, and intensity correction to detect and extract water leakage spots in metro tunnels. A case study of the Shanghai Metro was conducted. Results show that the corrected intensity value is an effective physical criterion to detect water leakages in metro tunnels. By combing the 3-D point cloud, the location, area, and even water content of the leakage regions can be accurately determined.
机译：地面激光扫描（TLS）可以使用高密度点云准确，完整地记录地铁隧道结构的实际几何变形和表面状况。此外，TLS可以同时记录每个点的反向散射强度值。反向散射强度值是电磁频谱的近红外区域中扫描对象的光谱特性的重要度量。理论上，由于近红外光谱中的高吸水系数，漏水区域的强度值理论上低于背景强度。因此，强度数据可用于漏水检测和定量分析。这封信调查了一种名为Faro Focus3D X330的新移动系统的可行性，该系统可用于数据收集，处理和强度校正，以检测和提取地铁隧道中的漏水点。进行了上海地铁的案例研究。结果表明，校正后的强度值是检测地铁隧道渗水的有效物理指标。通过组合3D点云，可以准确确定泄漏区域的位置，面积甚至水含量。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号