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Abstract I
摘要 II
致謝 III
Catalog V
Figure Catalog VII
Table Catalog VIII
Chapter 1 INTRODUCTION 1
1.1 LiDAR(Light Detection And Ranging) 1
1.2 Motivation 2
1.3 Main Contributions 3
1.4 Paper Framework 5
Chapter 2 RELATED WORK 6
2.1 Point Cloud Modeling 6
2.2 3D Model Retrieval Algorithm 6
Chapter 3 METHODOLOGY 9
3.1 Database Construction 10
3.2 Spherical Harmonic Functions 12
3.2.1 Spherical Harmonic Expansion 12
3.2.2 Least Square Fitting 15
3.2.3 Properties of SHFs 15
3.3 Data Preprocessing 18
3.3.1 KMZ to OBJ 19
3.3.2 Origin Determination 19
3.3.3 Model Resampling 22
3.3.4 Point Cloud Repairing 29
3.3.5 Spherical Harmonic Encoding 33
3.4 Model Retrieval and RMSE 33
Chapter 4 Experimental Results and Analysis 35
4.1 Experimental data 35
4.2 Retrieval Results 41
4.3 Optimization with Preprocessing 50
4.3.1 Density of Resampled model 51
4.3.2 Impact of Data Repairing 53
4.3.3 Models with Different LoDs 60
Chapter 5 Conclusions , Limitation, and Future Work 63
Reference 65
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