官方文档的读取函数

函数	参数
open3d.io.read_azure_kinect_mkv_metadata	(filename)
open3d.io.read_azure_kinect_sensor_config	(filename)
open3d.io.read_feature	(filename)
open3d.io.read_file_geometry_type(读取文件的几何类型)	( arg0 : str )(return(open3d.cpu.pybind.io.FileGeometry))
open3d.io.read_image	(filename)
open3d.io.read_pinhole_camera_intrinsic	(filename)
open3d.io.read_line_set	(filename, format='auto', print_progress=False)
open3d.io.read_octree	(filename, format='auto')
open3d.io.read_pinhole_camera_parameters	(filename)
open3d.io.read_pinhole_camera_trajectory	(filename)
open3d.io.read_point_cloud	(filename, format='auto', remove_nan_points=False, remove_infinite_points=False, print_progress=False)
open3d.io.read_pose_graph	(filename)
open3d.io.read_triangle_mesh	(filename, enable_post_processing=False, print_progress=False)
open3d.io.read_triangle_model	(filename, print_progress=False)
open3d.io.read_voxel_grid	(filename, format='auto', print_progress=False)
详细读取操作看上一章。

官方文档的写入函数。

函数	参数
open3d.io.write_line_set	（filename，line_set，write_ascii = False，compressed = False，print_progress = False）
open3d.io.write_octree	(filename, octree)
open3d.io.write_pinhole_camera_intrinsic	(filename, intrinsic)
open3d.io.write_pinhole_camera_parameters	(filename, parameters)
open3d.io.write_pinhole_camera_trajectory	(filename, trajectory)
open3d.io.write_point_cloud	(filename, pointcloud, write_ascii=False, compressed=False, print_progress=False)
open3d.io.write_pose_graph	(filename, pose_graph)
open3d.io.write_triangle_mesh	(filename, mesh, write_ascii=False, compressed=False, write_vertex_normals=True, write_vertex_colors=True, write_triangle_uvs=True, print_progress=False)
open3d.io.write_voxel_grid	(filename, voxel_grid, write_ascii=False, compressed=False, print_progress=False)
open3d.io.write_image	(filename, image, quality=- 1)
open3d.io.write_feature	(filename, feature)
open3d.io.write_azure_kinect_sensor_config	(filename, config)
open3d.io.write_azure_kinect_mkv_metadata	(filename, config)
其中常用两种。
一种是点云的写入open3d.io.write_point_cloud()，对应读取格式，多用于写入ply和pcd格式文件。
另一种是open3d.io.write_triangle_mesh，同样对应读取格式，写入stl等格式文件。