机载激光雷达点云数据处理理论与应用研究606(9)

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

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