feat: initial commit - massive-cloud point cloud processing system

alg/point_porj/archive/relative_code/NE.py

@@ -0,0 +1,17 @@
+import open3d as o3d
+import numpy as np
+pcd = o3d.io.read_point_cloud("pointcloud.pcd")
+
+# 估计法线
+pcd.estimate_normals(
+    search_param=o3d.geometry.KDTreeSearchParamHybrid(
+        radius=0.1,   # 搜索半径
+        max_nn=30     # 最大邻居数
+    )
+)
+
+# 可视化法线
+o3d.visualization.draw_geometries([pcd], point_show_normal=True)
+
+# 获取法线数据
+normals = np.asarray(pcd.normals)