[1] Chen G Z, Yue D J, Wang Y Q. Research on airborne LiDAR data filtering considering intensity information and terrain information[J]. Journal of Gansu Sciences, 33, 55-60(2021).
[2] Chen Y. Monomeric building extraction research on dense matching point clouds from oblique images[D], 23-36(2017).
[3] Wei S, Zhao N X, Li M L et al. Single photon denoising algorithm combined with improved DBSCAN and statistical filtering[J]. Laser Technology, 45, 601-606(2021).
[4] Jiao Y N, Ma J, Zhong B B. Point cloud parallel de-noising algorithms based on scale change[J]. Engineering Journal of Wuhan University, 54, 277-282(2021).
[5] Cao X, Lin Z X, Song S L et al. Multispectral LiDAR point cloud denoising based on color clustering[J]. Laser & Optoelectronics Progress, 58, 1228002(2021).
[6] Zhu B, Cheng X L, Liu S L et al. Building point cloud elevation boundary extraction based on PCA normal vector estimation[J]. Geomatics & Spatial Information Technology, 44, 38-40(2021).
[7] Mao Y C, Fu Y W, Cao W et al. Extraction method of open pit mine car based on UAV point cloud data[J]. Journal of Northeastern University (Natural Science), 42, 842-848, 863(2021).
[8] Ma D L, Wang X K, Li G Y. Research on the classification method of point cloud based on elevation difference[J]. Bulletin of Surveying and Mapping, 46-49(2018).
[9] Yu H S, Liu R. Building point cloud extraction based on color information of oblique image[J]. Journal of East China University of Technology (Natural Science), 44, 168-173(2021).
[10] Chen P, Li L, Hu D H. The elimination of vegetation based on the uniformity of point cloud[J]. China Mining Magazine, 25, 138-140, 145(2016).
[11] Leal E, Sanchez-Torres G, Branch J W. Sparse regularization-based approach for point cloud denoising and sharp features enhancement[J]. Sensors, 20, 3206(2020).
[12] Ji Y, Kang Z, Zhang C. Two-stage gradient-based recursive estimation for nonlinear models by using the data filtering[J]. International Journal of Control, Automation and Systems, 19, 2706-2715(2021).
[13] Yang Z, Lu X Y, Wu Y B et al. Extraction of road marks based on urban road characteristics and point cloud echo information[J]. Geomatics & Spatial Information Technology, 43, 193-196(2020).
[14] Miao C L, Li S D, Chen B L et al. Fast acquisition equipment and domain clustering method for extracting surrounding rock discontinuities[J]. Journal of Computer Applications, 41, 336-340(2021).
[15] Shi H X, Wang J M. Feature line extraction for point cloud based on normal vector region clustering segmentation[J]. China Mechanical Engineering, 32, 2552-2561(2021).
[16] Huang H M, Zhu X H. Study on extraction technology of geometric feature elements of ancient architecture point cloud model[J]. Surveying and Mapping of Geology and Mineral Resources, 36, 13-15, 41(2020).
[17] Li M H. Research and implementation of point cloud processing algorithm for airborne LIDAR system[D], 44-61(2020).
[18] Wang Z, Wang Z, Zhang X et al. Adaptive threshold clustering segmentation method based on two-dimensional lidar[J]. Chinese Journal of Lasers, 48, 1610005(2021).
[19] Shang P F, Chen Y, Lü W J et al. A point cloud semantic segmentation network considering normals[J]. Laser & Optoelectronics Progress, 59, 1610011(2022).
[20] Zhang J M, Chen F J, Long J L. Point cloud filtering algorithm based on image processing[J]. Laser & Optoelectronics Progress, 58, 0610015(2021).
