摘要
机载激光雷达点云滤波是获取高精度数字高程模型的关键,也是国内外研究的热点。这里采用区块索引机制对激光雷达点云进行分块曲面滤波;利用距离图像的像素位置信息指导分块数的确定。试验结果表明,该方法可有效滤除非地面点,从而保留地面部分点云,具有一定实用价值。
Filtering of LIDAR points cloud is the key of obtaining precise DEM and the hotspot in the researc-hing field. The points cloud was processed with block curved filtering method by using block-index mecha- nism. And pixel position information in distance image was used for guiding determination of the filtering pa- rameters. Result of the experiment showed that this method is practical, and it could remove the non-ground points and remain the ground parts effectively.
出处
《测绘科学技术学报》
北大核心
2010年第6期443-445,共3页
Journal of Geomatics Science and Technology
关键词
点云数据
距离图像
区块索引机制
点云滤波
分块数
points cloud data
distance image
block-index mechanism
points cloud filtering
block number
