[MMDetection3D] ply to bin, obj to ply

If you want to put a ply file

• ply to bin

convert_ply('./test.ply', './test.bin')

import numpy as np
import pandas as pd
from plyfile import PlyData

def convert_ply(input_path, output_path):
    plydata = PlyData.read(input_path)  # read file
    data = plydata.elements[0].data  # read data
    data_pd = pd.DataFrame(data)  # convert to DataFrame
    data_np = np.zeros(data_pd.shape, dtype=np.float)  # initialize array to store data
    property_names = data[0].dtype.names  # read names of properties
    for i, name in enumerate(
            property_names):  # read data by property
        data_np[:, i] = data_pd[name]
    data_np.astype(np.float32).tofile(output_path)

• off, obj, etc to ply

to_ply('./test.obj', './test.ply', 'obj')

import trimesh

def to_ply(input_path, output_path, original_type):
    mesh = trimesh.load(input_path, file_type=original_type)  # read file
    mesh.export(output_path, file_type='ply')  # convert to ply

 

https://github.com/open-mmlab/mmdetection3d/blob/master/docs/en/getting_started.md#verification

GitHub - open-mmlab/mmdetection3d: OpenMMLab's next-generation platform for general 3D object detection.