摘要
针对当前从三维激光点云中提取海岸线方法的不足,提出了一种基于点云栅格化的海岸线提取方法。首先对点云进行去噪等数据预处理,然后直接将其栅格化生成更为平滑的海岸地形,最后采用中国近海海域潮汐精密模型,从栅格海岸地形中提取基于平均大潮高潮面MHWS(Mean High Water Springs)海岸线。实验表明:此处所提出的点云栅格化方法较当前方法提取的海岸线更可靠、合理,提取效率更高,同时也可用于其他辅助岸线的提取。
Aiming at the shortages of current methods, a rasterization method extracting coastline from LiDAR point clouds was put forward. Firstly, removed noise, then point clouds were rasterized for much more smoother coast terrain. Lastly, the coastline based on MHWS was abstracted from the rasterized coast terrain by adopting China offshore tide model. It is tested that the coastline extracted by rasterization method is much more reliable and reasonable than others, and can extracted other assistant lines as well.
出处
《测绘科学技术学报》
CSCD
北大核心
2015年第2期187-191,196,共6页
Journal of Geomatics Science and Technology
基金
地理信息工程国家重点实验室开放研究基金项目(SKLGIE2014-M-3-2)
国家自然科学基金项目(41171349)
海军大连舰艇学院2110工程三期资助学术预研课题(DLJY-XY2014016)
关键词
LI
DAR点云
点云栅格化
海岸线
平均大潮高潮面
痕迹岸线
LiDAR point clouds
point clouds rasterization
coastline
mean high water springs（MHWS）
trace coastline
