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Coco stuff #749

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add cocostuff
  • Loading branch information
haoyuying committed Dec 22, 2020
commit b1f35935f8c26fb9263f13349646ad4f49af37e6
78 changes: 78 additions & 0 deletions paddleseg/datasets/cocostuff.py
Original file line number Diff line number Diff line change
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# 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.

import os
import glob

from paddleseg.datasets import Dataset
from paddleseg.cvlibs import manager
from paddleseg.transforms import Compose

@manager.DATASETS.add_component
class CocoStuff(Dataset):
"""
COCO-Stuff dataset `https://github.com/nightrome/cocostuff`.
The folder structure is as follow:

cocostuff
|
|--images
| |--train2017
| |--val2017
|
|--annotations
| |--train2017
| |--val2017


Args:
transforms (list): Transforms for image.
dataset_root (str): Cityscapes dataset directory.
mode (str): Which part of dataset to use. it is one of ('train', 'val'). Default: 'train'.
"""

def __init__(self, transforms, dataset_root, mode='train'):
self.dataset_root = dataset_root
self.transforms = Compose(transforms)
self.file_list = list()
mode = mode.lower()
self.mode = mode
self.num_classes = 172
self.ignore_index = 255

if mode not in ['train', 'val']:
raise ValueError(
"mode should be 'train', 'val', but got {}.".format(mode))

if self.transforms is None:
raise ValueError("`transforms` is necessary, but it is None.")

img_dir = os.path.join(self.dataset_root, 'images')
label_dir = os.path.join(self.dataset_root, 'annotations')
if self.dataset_root is None or not os.path.isdir(
self.dataset_root) or not os.path.isdir(
img_dir) or not os.path.isdir(label_dir):
raise ValueError(
"The dataset is not Found or the folder structure is nonconfoumance."
)

label_files = sorted(
glob.glob(
os.path.join(label_dir, mode+'2017', '*.png')))

img_files = sorted(
glob.glob(os.path.join(img_dir, mode+'2017', '*.jpg')))

self.file_list = [[
img_path, label_path
] for img_path, label_path in zip(img_files, label_files)]