Skip to content
Permalink
Branch: master
Find file Copy path
Find file Copy path
1 contributor

Users who have contributed to this file

37 lines (27 sloc) 1.02 KB
import lmdb
import numpy as np
import torch.utils.data as data
from PIL import Image
import example_pb2
class Dataset(data.Dataset):
def __init__(self, path_to_lmdb_dir, transform):
self._path_to_lmdb_dir = path_to_lmdb_dir
self._reader = lmdb.open(path_to_lmdb_dir, lock=False)
with self._reader.begin() as txn:
self._length = txn.stat()['entries']
self._keys = self._keys = [key for key, _ in txn.cursor()]
self._transform = transform
def __len__(self):
return self._length
def __getitem__(self, index):
with self._reader.begin() as txn:
value = txn.get(self._keys[index])
example = example_pb2.Example()
example.ParseFromString(value)
image = np.frombuffer(example.image, dtype=np.uint8)
image = image.reshape([64, 64, 3])
image = Image.fromarray(image)
image = self._transform(image)
length = example.length
digits = example.digits
return image, length, digits
You can’t perform that action at this time.