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[Fix] Fix LMDB dataset (#1338)

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* fix lmdb

* fix

* fix

* fix comments
This commit is contained in:
Xinyu Wang 2022-08-31 18:56:48 +08:00 committed by GitHub
parent f788bfdbb9
commit cbef6b8c78
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1 changed files with 6 additions and 3 deletions
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9
mmocr/datasets/recog_lmdb_dataset.py
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@ -5,6 +5,7 @@ import warnings
from typing import Callable, List, Optional, Sequence, Union
from mmengine.dataset import BaseDataset
from mmengine.utils import is_abs
from mmocr.registry import DATASETS, TASK_UTILS
@ -80,7 +81,7 @@ class RecogLMDBDataset(BaseDataset):
self.parser = TASK_UTILS.build(parser_cfg)
self.ann_file = ann_file
self.deprecated_format = False
env = self._get_env()
env = self._get_env(root=data_root)
with env.begin(write=False) as txn:
try:
self.total_number = int(
@ -169,7 +170,7 @@ class RecogLMDBDataset(BaseDataset):
data_info['instances'] = [dict(text=parsed_anno[self.parser.keys[1]])]
return data_info
def _get_env(self):
def _get_env(self, root=''):
"""Get lmdb environment from self.ann_file.
Returns:
@ -180,8 +181,10 @@ class RecogLMDBDataset(BaseDataset):
except ImportError:
raise ImportError(
'Please install lmdb to enable RecogLMDBDataset.')
lmdb_path = self.ann_file if is_abs(self.ann_file) else osp.join(
root, self.ann_file)
return lmdb.open(
self.ann_file,
lmdb_path,
max_readers=1,
readonly=True,
lock=False,