点云处理库pyntcloud

pyntcloud是一个python3库，用于利用python科学堆栈的强大功能处理3d点云

与open3d相互转换：

import open3d as o3d
from pyntcloud import PyntCloud

# FROM Open3D
original_triangle_mesh = o3d.io.read_triangle_mesh("diamond.ply")
cloud = PyntCloud.from_instance("open3d", original_triangle_mesh)

# TO Open3D
cloud = PyntCloud.from_file("diamond.ply")
converted_triangle_mesh = cloud.to_instance("open3d", mesh=True)  # mesh=True by default

pyvista相互转换：

import pyvista as pv
from pyntcloud import PyntCloud

# FROM PyVista
original_point_cloud = pv.read("diamond.ply")
cloud = PyntCloud.from_instance("pyvista", original_point_cloud)

# TO PyVista
cloud = PyntCloud.from_file("diamond.ply")
converted_triangle_mesh = cloud.to_instance("pyvista", mesh=True)

保存ply或者npz：

predicted_labels = user.infer(scan)

cloud = pd.DataFrame(scan[:, :3], columns=['x', 'y', 'z'])
cloud['seg_id'] = predicted_labels
pcloud = pyntcloud.PyntCloud(cloud)
pcloud.plot(use_as_color='seg_id', cmap="cool", backend="pythreejs")
pcloud.to_file("out1.ply")