摘要
对机载LiDAR数据的边缘提取方法进行研究。介绍机载LiDAR系统与应用以及机载LiDAR数据处理流程,并运用VC++程序将机载LiDAR数据生成深度影像。将形态学边缘提取方法改进后,运用最佳阈值形态学方法对深度影像进行边缘提取。其中建筑物边缘与Log算子、Candy算子这两种方法相比较,对山脉直接采取此方法进行边缘提取,得出采用最佳阈值形态学方法对边缘提取是有效的,提取的边缘更连续,断点少,有利于判读。
For better use of the airborne LiDAR data, this paper researches methods of edge detection. The paper introduces the LIDAR system and its use , and LIDAR data processing and use of VC ＋ ＋ to generated depth image. Best threshold morphological methods were used for the depth of images to detection edges. In the paper, for buildings by compared to Log operator and Candy operator methods and for mountains directly use this method. It concludes that the use of morphology have better results, and the edges has less breakpoints, and more continuous, so more conducive to use.
出处
《测绘工程》
CSCD
2009年第2期34-37,共4页
Engineering of Surveying and Mapping
关键词
LIDAR
深度影像
边缘提取
数学形态学
最佳阈值
Airborne LiDAR Technology
Depth Image
Edge Detection
Mathematic morphology
best threshold
