点云外接bbox分两种：与坐标轴对齐的bbox，带方向旋转的bbox.  import open3d as o3dif __name__ == "__main__":# 1. read pcdsample_ply_data = o3d.data.PLYPointCloud()pcd = o3d.io.read_point_cloud(sample_ply_data.path)# Flip it,