激光与光电子学进展, 2020, 57 (23): 232801, 网络出版: 2020-12-07
基于顶点向量角的改进型扫描线滤波算法 下载: 823次
Improved Scan Line Filtering Algorithm Based on Vertex Vector Angle
遥感 激光雷达 点云滤波 扫描线 顶点向量角 阈值 remote sensing laser radar point cloud filtering scan line vertex vector angle threshold
摘要
扫描线滤波算法可以在一定程度上简化滤波问题,并在复杂地形中可以取得较好的滤波效果,但该算法难以滤除一些地面下方的噪声点以及正、反坡度角相差较大的点。针对上述问题,提出顶点向量角-扫描线滤波算法,利用顶点向量角并结合高差阈值对扫描线进行后处理,可以进一步提高所提算法的滤波效果。通过实验将传统算法与改进后的算法进行对比,证明顶点向量角-扫描线滤波算法能够取得更佳的滤波效果。
Abstract
The scan line filtering algorithm can simplify the filtering problem to a certain extent and achieve improved filtering results in complex terrains. However, it is difficult to filter out some noise points under the ground and points with large difference between positive and negative slope angles. To resolve these problems, a vertex vector angle-scan line filtering algorithm is proposed, where the vertex vector angle and height difference threshold are used to perform postprocessing on the scan line, further improving the filtering effect. The traditional algorithm is compared with the improved algorithm through experiments, proving that the latter can achieve improved filtering results.
蒋志祥, 邓兴升, 邢承滨. 基于顶点向量角的改进型扫描线滤波算法[J]. 激光与光电子学进展, 2020, 57(23): 232801. Zhixiang Jiang, Xingsheng Deng, Chengbin Xing. Improved Scan Line Filtering Algorithm Based on Vertex Vector Angle[J]. Laser & Optoelectronics Progress, 2020, 57(23): 232801.