新版open3d 有些Api进行了更改

module ‘open3d’ has no attribute ‘PointCloud’

open3d.PointCloud() 

改为了

open3d.geometry.PointCloud()

/**************/

module ‘open3d’ has no attribute ‘Vector3dVector’

open3d.Vector3dVector()

改为了

open3d.utility.Vector3dVector()

/**************/

module ‘open3d’ has no attribute ‘draw_geometries’

open3d.draw_geometries() 

改为了

open3d.visualization.draw_geometries()

/**************/

module ‘open3d’ has no attribute ‘voxel_down_sample’

open3d.voxel_down_sample(pcd,voxel_size)

改为了

pcd.voxel_down_sample(voxel_size)