目 录
摘 要..............................................................................................................................................I
Abstract.........................................................................................................................................III
第一章
1.1
1.2
1.3
1.4
第二章
2.1
2.2
2.3
2.4
2.5
第三章 绪 论.............................................................................................................................1 引言...................................................................................................................................1 LIDAR数据处理现状.......................................................................................................1 课题研究背景和意义.......................................................................................................5 主要研究内容...................................................................................................................8 机载激光雷达点云数据获取理论.............................................................................10 点云数据获取原理.........................................................................................................10 点云数据获取方式.........................................................................................................11 点云数据结构.................................................................................................................12 点云数据坐标转换.........................................................................................................13 本章小结.........................................................................................................................17 机载激光雷达点云简化.............................................................................................18
3.1 点云处理流程.................................................................................................................18
3.2 点云输入.........................................................................................................................19
3.3 动态开窗技术.................................................................................................................22
3.4 点云数据简化.................................................................................................................25
3.4.1 LIDAR点云简化的必要性.....................................................................................25
3.4.2 点云简化现状.........................................................................................................27
3.4.3 多边形内点云简化.................................................................................................28
3.4.4 方格网法均匀简化点云.........................................................................................29
3.4.5 带状区域内点云简化.............................................................................................32
3.5 本章小结.........................................................................................................................34
第四章 机载激光雷达点云滤波处理.....................................................................................35
4.1 点云滤波原理.................................................................................................................35
4.2 点云滤波方法.................................................................................................................35
4.2.1 常用滤波方法.........................................................................................................36
4.2.2 移动窗口的坡度滤波和移动圆域的坡度滤波.....................................................41
4.3 双谐样条函数法滤波.....................................................................................................43
4.3.1 双谐样条函数法滤波原理.....................................................................................43
4.3.2 双谐样条函数滤波实例.........................................................................................45
4.4 本章小结.........................................................................................................................55
第五章 机载激光雷达点云修复.............................................................................................56
5.1 常用插值方法.................................................................................................................56
5.2 径向基函数神经网络法修复点云.................................................................................59
5.2.1 径向基函数神经网络原理.....................................................................................59