PulseFocusPlatform/ppdet/utils/voc_utils.py

87 lines
2.8 KiB
Python

# Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import os
import os.path as osp
import re
import random
__all__ = ['create_list']
def create_list(devkit_dir, years, output_dir):
"""
create following list:
1. trainval.txt
2. test.txt
"""
trainval_list = []
test_list = []
for year in years:
trainval, test = _walk_voc_dir(devkit_dir, year, output_dir)
trainval_list.extend(trainval)
test_list.extend(test)
random.shuffle(trainval_list)
with open(osp.join(output_dir, 'trainval.txt'), 'w') as ftrainval:
for item in trainval_list:
ftrainval.write(item[0] + ' ' + item[1] + '\n')
with open(osp.join(output_dir, 'test.txt'), 'w') as fval:
ct = 0
for item in test_list:
ct += 1
fval.write(item[0] + ' ' + item[1] + '\n')
def _get_voc_dir(devkit_dir, year, type):
return osp.join(devkit_dir, 'VOC' + year, type)
def _walk_voc_dir(devkit_dir, year, output_dir):
filelist_dir = _get_voc_dir(devkit_dir, year, 'ImageSets/Main')
annotation_dir = _get_voc_dir(devkit_dir, year, 'Annotations')
img_dir = _get_voc_dir(devkit_dir, year, 'JPEGImages')
trainval_list = []
test_list = []
added = set()
for _, _, files in os.walk(filelist_dir):
for fname in files:
img_ann_list = []
if re.match(r'[a-z]+_trainval\.txt', fname):
img_ann_list = trainval_list
elif re.match(r'[a-z]+_test\.txt', fname):
img_ann_list = test_list
else:
continue
fpath = osp.join(filelist_dir, fname)
for line in open(fpath):
name_prefix = line.strip().split()[0]
if name_prefix in added:
continue
added.add(name_prefix)
ann_path = osp.join(
osp.relpath(annotation_dir, output_dir),
name_prefix + '.xml')
img_path = osp.join(
osp.relpath(img_dir, output_dir), name_prefix + '.jpg')
img_ann_list.append((img_path, ann_path))
return trainval_list, test_list