[1] AXELSSON P. DEM Generation from Laser Scanner Data Using Adaptive TIN Models[C]//Proceedings of International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Amsterdam: [s.n.], 2000: 110-117.
[2] SUI Lichun,YANG Yun. Filtering of Airborne LiDAR Point Cloud Data Based on car(p,q) Model and Mathematical Morphology[J]. Acta Geodaetica et Cartographica Sinica, 2012,41(2): 219-224. (隋立春,杨耕. 基于car(p,q)模型和数学形态学理论的LiDAR点云数据滤波[J]. 测绘学报, 2012, 41(2): 219-224.)
[3] SUI Lichun, ZHANG Yibin, LIU Yan, et al.Filtering of Airborne LiDAR Point Cloud Data Based on Adaptive Mathematical Morphology[J]. Acta Geodaetica et Cartographica Sinica, 2010, 39(4); 390-396. (隋立春,张熠斌,柳艳, 等. 基于改进的数学形态学算法的LiDAR点云数据滤波[J]. 测绘学报, 2010, 39(4): 390-396.)
[4] ZHANG Yi, YAN Li. 3D Diffusion Filtering Method of Intensity Noise for Terrestrial Laser Scanning Point Cloud[J]. Acta Geodaetica et Cartographica Sinica, 2013, 42(4): 568-573. (张毅,闫利. 地面激光点云强度噪声的三维扩散滤波方法[J].测绘学报, 2010, 39(4); 219-224.)
[5] CHENG Liang, GONG Jianya. Building Boundary Extraction Using Very High Resolution Images and LiDAR[J]. Acta Geodaetica et Cartographica Sinica, 2008, 37(3):391-393. (程亮,龚健雅. LiDAR辅助下利用超高分辨率影像提取建筑物轮廓方法[J]. 测绘学报, 2008, 37(3): 391-393.)
[6] HASLER D, SBAIZ L, SVSSTRUNK S, et al. Outlier Modeling in Image Matching[J]. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2003, 25(3): 301-315.
[7] SITHOLE G, VOSSELMAN G. Experimental Comparison of Filter Algorithms for Bare-Earth Extraction from Airborne Laser Scanning Point Clouds[J]. ISPRS Journal of Photogrammetry and Remote Sensing, 2004, 59 (1-2): 85-101.
[8] ZUO Zhiquan, ZHANG Zuxun, ZHANG Jianqing. Noise Removal Algorithm of LIDAR Point Clouds Based on 3D Finite-element[J]. Journal of Remote Sensing, 2012, 16(2): 297-309.(左志权,张祖勋,张剑清.三维有限元分析的LIDAR点云噪声剔除算法[J].遥感学报,2012, 16(2): 297-309.)
[9] HAN Wenjun,ZUO Zhiquan. Noise Removing Algorithm of LiDAR Point Clouds Based on TIN Smoothing Rules[J]. Journal of Surveying and Mapping, 2012, 37(6): 153-154. (韩文军,左志权. 基于三角网光滑规则的LiDAR 点云噪声剔除算法[J]. 测绘科学, 2012, 37(6): 153-154.)
[10] SILVÁN-CÁRDENAS J L, WANG L. A Multi-resolution Approach for Filtering LiDAR Altimetry Data[J]. ISPRS Journal of Photogrammetry and Remote Sensing, 2006, 61(1): 11-22.
[11] MENG X, WANG L, SILVÁN-CÁRDENAS J L, et al. A Multidirectional Ground Filtering Algorithm for Airborne LiDAR[J]. ISPRS Journal of Photogrammetry and Remote Sensing, 2009, 64(1): 117-124.
[12] ZHANG K Q, CHEN S, WHITMAN D, et al. A Progressive Morphological Filter for Removing Nonground Measurements from Airborne LiDAR Data[J]. IEEE Transactions on Geoscience and Remote Sensing, 2003, 41(4): 872-882.
[13] MONGUS D, ZALIK B. Parameter-free Ground Filtering of LiDAR Data for Automatic DTM Generation[J]. ISPRS Journal of Photogrammetry and Remote Sensing, 2012, 67: 1-12.
[14] KOBLER A, PFEIFER N, OGRINC P, et al. Repetitive Interpolation: A Robust Algorithm for DTM Generation from Aerial Laser Scanner Data in Forested Terrain[J]. Remote Sensing of Environment, 2007, 108(1): 9-23.
[15] SOTOODEH S. Outlier Detection in Laser Scanner Point Clouds[C]//Proceedings of the ISPRS Commission V Symposium, Image Engineering and Vision Metrology, Commission V: 36. Dresden: ISPRS, 2006: 297-302.
[16] SOTOODEH S. Hierarchical Clustered Outlier Detection in Laser Scanner Point Clouds[C]//Proceedings of ISPRS Commission V Symposium Image Enginerring and Vision Metrology. Deresden: ISPRS, 2007: 383-387.
[17] ALMEIDA J A S, BARBOSA L M S, PAIS A, et al. Improving Hierarchical Cluster Analysis: A New Method with Outlier Detection and Automatic Clustering[J]. Chemometrics and Intelligent Laboratory Systems, 2007, 87(2): 208-217.
[18] DESBRUN M, MEYER M, SCHROBDER P, et al. Implicit Fairing of Irregular Meshes Using Diffusion and Curvature Flow[C]//Proceedings of the 26th Annual Conference on Computer Graphics and Interactive Techniques. Los Angeles: [s.n.], 1999: 317-324.
[19] BAJAJ C L, XU G. Anisotropic Diffusion of Surfaces and Functions on Surfaces[J]. ACM Transactions on Graphics, 2003, 22(1): 4-32.
[20] CLARENZ U, DIEWALD U, RUMPF M. Anisotropic Geometric Diffusion in Surface Processing[C]//Proceedings of IEEE Visualization 2000. Salt Lake City: IEEE, 2000: 397-412.
[21] YE Aifen, GONG Shengrong, WANG Zhaohui, et al. Point Cloud Density Extraction Based on Stochastic Distribution Estimation[J]. Computer Engineering, 2009, 35(4): 183-186. (叶爱芬,龚声蓉,王朝晖,等.基于随机分布估计的点云密度提取[J]. 计算机工程, 2009, 35(4): 183-186.)
[22] PATEL J K, READ C B. Handbook of the Normal Distribution[M]. 2nd ed. London: CRC Press, 1996.
[23] MANN P S. Introductory Statistics[M]. 7th ed. New York: John Wiley and Sons Inc, 2010.
[24] PCL. Point Cloud Library(PCL) Module Filters[EB/OL]. [2013-06-12]. http://docs.pointclouds. org/trunk/group_filters.html.
[25] ISPRS. ISPRS Test on Extracting DEMS from Point Clouds: A Comparison of Existing Automatic Filters[EB/OL].2006[2013-08-06]. http://www.itc.nl/isprswgiii-3/filtertest.
