def _validate_augmentation_path(self):
# Check if augmentation pipeline file exists
if self.augmentation_path.is_file() and self.augmentation_path.suffix == '.yml':
self.transforms = A.load(self.augmentation_path, data_format='yaml')
else:
self.transforms = None
warnings.warn(f'{self.augmentation_path} is not a file. No augmentations will be applied')
def make_data(data_folder: str,
mode: str,
transform: dict,
num_workers: int,
batch_size: int,
fold: str = None,
folds_path: str = None,
positive_ratio_range: Tuple[float, float] = (0.3, 0.8),
epochs: int = 50):
img_filenames, mask_filenames, non_emptiness = make_filenames(
data_folder=data_folder, mode=mode, fold=fold, folds_path=folds_path)
_transform = A.load(transform[mode], 'yaml')
_transform.transforms = _transform.transforms + [ToTensor()]
dataset = PneumothoraxDataset(img_filenames=img_filenames,
mask_filenames=mask_filenames,
transform=_transform,
non_emptiness=non_emptiness)
sampler = EmptySampler(data_source=dataset,
positive_ratio_range=positive_ratio_range,
epochs=epochs)
loader = make_data_loader(dataset=dataset,
sampler=sampler if mode == 'train' else None,
batch_size=batch_size,
num_workers=num_workers)
return loader
def augment_data(save_dir):
"""
A special that implemnets the data augmentation pipeline.
:param save_dir: Where to save the augmented data?
:return:
"""
seed = 1337
random.seed(seed)
start_time = time.time()
print(f"====== Augmenting data. Seed set at {seed} ======")
data_file = h5py.File(os.path.join(save_dir, 'data_file.h5'), 'r')
data_shape = data_file['data/data'].shape
data_aug = np.zeros(shape=data_shape, dtype=np.float32)
n_samples = data_shape[0]
img_channels, img_height, img_width, img_depth = data_shape[1:5]
try:
aug = alb.load(os.path.join(save_dir, 'aug_pipeline_1.json'))
except FileNotFoundError:
print("Pipeline not found. Generating One ...")
aug = Compose([
OneOf([VerticalFlip(p=1), HorizontalFlip(p=1)], p=1),
OneOf([
ElasticTransform(p=1, sigma=6, alpha_affine=4, alpha=75),
GridDistortion(p=1),
OpticalDistortion(p=1, distort_limit=2, shift_limit=0.5)
],
p=0.8)
])
alb.save(aug, os.path.join(save_dir, 'aug_pipeline_1.json'))
for data_idx in np.arange(n_samples):
img = data_file['data/data'][data_idx, ...]
img = img.reshape(img_channels, img_height, img_width, -1)
img_aug = aug(image=img[0,
...])['image'].reshape(img_channels,
img_height, img_width,
img_depth, -1)
data_aug[data_idx, ...] = img_aug
del img_aug
del img
data_file.close()
with h5py.File(os.path.join(save_dir, 'data_aug.h5'), 'w') as file:
file.create_dataset('data/data', data=data_aug, dtype=np.float32)
print(
f"====== Finished augmentation. Time taken: {time.time() - start_time}s ======"
)
def load_albu_transform(path: Union[str, Path],
data_format: str = "yaml") -> Transform:
"""
:param path: path to augmentation config
:param data_format: config format
:return: Albumentations transform
"""
albu_transform = albu.load(path, data_format=data_format)
return albu_transform
def test_serialization_v2():
current_directory = os.path.dirname(os.path.abspath(__file__))
files_directory = os.path.join(current_directory, "files")
transform = A.load(os.path.join(files_directory, "transform_serialization_v2.json"))
with open(os.path.join(files_directory, "output_v0.4.6.json")) as f:
output_0_4_6 = json.load(f)
np.random.seed(42)
image = np.random.randint(low=0, high=255, size=(256, 256, 3), dtype=np.uint8)
random.seed(42)
transformed_image = transform(image=image)["image"]
assert transformed_image.numpy().tolist() == output_0_4_6
def test_augmentations_serialization_to_file_with_custom_parameters(
augmentation_cls, params, p, seed, image, mask, always_apply, data_format
):
with patch("builtins.open", OpenMock()):
aug = augmentation_cls(p=p, always_apply=always_apply, **params)
filepath = "serialized.{}".format(data_format)
A.save(aug, filepath, data_format=data_format)
deserialized_aug = A.load(filepath, data_format=data_format)
set_seed(seed)
aug_data = aug(image=image, mask=mask)
set_seed(seed)
deserialized_aug_data = deserialized_aug(image=image, mask=mask)
assert np.array_equal(aug_data["image"], deserialized_aug_data["image"])
assert np.array_equal(aug_data["mask"], deserialized_aug_data["mask"])
def predict(dcm_path, cfg):
image = pydicom.read_file(dcm_path).pixel_array
image = resize(image, (cfg['IMAGE_SIZE'], cfg['IMAGE_SIZE']))
image = (image * 255).astype('uint8')
image = np.dstack([image] * 3)
fn = dcm_path[:dcm_path.rfind('.')]
cv2.imwrite(fn + '.png', image)
print(f'DCM file is trasformed to PNG in {fn}.png')
# model = AlbuNet(pretrained=False).to(cfg['DEVICE'])
module = importlib.import_module(cfg['MODEL']['PY'])
model_class = getattr(module, cfg['MODEL']['CLASS'])
model = model_class(**cfg['MODEL'].get('ARGS', None)).to(cfg['DEVICE'])
transform = albu.load(cfg['TRANSFORMS'])
to_tensor = ToTensor()
sample = transform(image=image)
sample = to_tensor(**sample)
image = sample['image'].unsqueeze(0).to(cfg['DEVICE'])
checkpoints_list = build_checkpoints_list(cfg)
mask = 0
for pred_idx, checkpoint_path in enumerate(checkpoints_list):
print(checkpoint_path)
model.load_state_dict(
torch.load(checkpoint_path,
map_location=torch.device(cfg['DEVICE'])))
model.eval()
preds = model(image)
curr_masks = torch.sigmoid(preds)
curr_masks = curr_masks.squeeze(1).cpu().detach().numpy()
mask = (mask * pred_idx + curr_masks) / (pred_idx + 1)
# return (mask.squeeze(0) * 255).astype('uint8')
area_threshold = cfg['AREA_THRESHOLD']
top_score_threshold = cfg['TOP_SCORE_THRESHOLD']
bottom_score_threshold = cfg['BOTTOM_SCORE_THRESHOLD']
if cfg['USELEAK']:
leak_score_threshold = cfg['LEAK_SCORE_THRESHOLD']
else:
leak_score_threshold = bottom_score_threshold
return apply_thresholds(mask.squeeze(0), 1, area_threshold,
top_score_threshold, bottom_score_threshold,
leak_score_threshold)
def get_augmentation(save_path=None, load_path=None):
if load_path:
return A.load(load_path)
else:
aug_seq1 = A.OneOf([
A.Rotate(limit=(-90, 90), p=1.0),
A.Flip(p=1.0),
A.OpticalDistortion(always_apply=False, p=1.0, distort_limit=(-0.3, 0.3),
shift_limit=(-0.05, 0.05), interpolation=3,
border_mode=3, value=(0, 0, 0), mask_value=None),
], p=1.0)
aug_seq2 = A.OneOf([
# A.ChannelDropout(always_apply=False, p=1.0, channel_drop_range=(1, 1), fill_value=0),
A.RGBShift(r_shift_limit=15, g_shift_limit=15,
b_shift_limit=15, p=1.0),
A.RandomBrightnessContrast(always_apply=False, p=1.0, brightness_limit=(
-0.2, 0.2), contrast_limit=(-0.2, 0.2), brightness_by_max=True)
], p=1.0)
aug_seq3 = A.OneOf([
A.GaussNoise(always_apply=False, p=1.0, var_limit=(10, 50)),
A.ISONoise(always_apply=False, p=1.0, intensity=(
0.1, 1.0), color_shift=(0.01, 0.3)),
A.MultiplicativeNoise(always_apply=False, p=1.0, multiplier=(
0.8, 1.6), per_channel=True, elementwise=True),
], p=1.0)
aug_seq4 = A.OneOf([
A.Equalize(always_apply=False, p=1.0,
mode='pil', by_channels=True),
A.InvertImg(always_apply=False, p=1.0),
A.MotionBlur(always_apply=False, p=1.0, blur_limit=(3, 7)),
A.RandomFog(always_apply=False, p=1.0,
fog_coef_lower=0.01, fog_coef_upper=0.2, alpha_coef=0.2)
], p=1.0)
aug_seq = A.Compose([
# A.Resize(self.img_size, self.img_size),
# aug_seq1,
aug_seq2,
aug_seq3,
aug_seq4,
# A.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]),
# A.Normalize(mean=[0.5, 0.5, 0.5], std=[0.5, 0.5, 0.5]),
])
# aug_path = '/home/jitesh/prj/classification/test/bolt/aug/aug_seq.json'
if save_path:
A.save(aug_seq, save_path)
# loaded_transform = A.load(aug_path)
return aug_seq
def aug_flip_and_rotate(load_path=None):
if load_path:
return A.load(load_path)
else:
aug_seq = A.Compose([
A.Rotate(limit=(-90, 90), p=0.5),
A.Flip(p=0.5),
A.OpticalDistortion(distort_limit=0.05,
shift_limit=0.05,
interpolation=cv2.INTER_LINEAR,
border_mode=cv2.BORDER_REFLECT_101,
value=None,
mask_value=None,
always_apply=False,
p=0.5)
])
return aug_seq
def main():
args = argparser()
config_path = Path(args.cfg.strip("/"))
experiment_folder = config_path.parents[0]
inference_config = load_yaml(config_path)
print(inference_config)
batch_size = inference_config['BATCH_SIZE']
device = inference_config['DEVICE']
module = importlib.import_module(inference_config['MODEL']['PY'])
model_class = getattr(module, inference_config['MODEL']['CLASS'])
model = model_class(**inference_config['MODEL'].get('ARGS', None)).to(device)
model.eval()
num_workers = inference_config['NUM_WORKERS']
transform = albu.load(inference_config['TEST_TRANSFORMS'])
dataset_folder = inference_config['DATA_DIRECTORY']
dataset = PneumothoraxDataset(
data_folder=dataset_folder, mode='test',
transform=transform,
)
dataloader = DataLoader(
dataset=dataset, batch_size=batch_size,
num_workers=num_workers, shuffle=False
)
use_flip = inference_config['FLIP']
checkpoints_list = build_checkpoints_list(inference_config)
mask_dict = defaultdict(int)
for pred_idx, checkpoint_path in enumerate(checkpoints_list):
print(checkpoint_path)
model.load_state_dict(torch.load(checkpoint_path))
model.eval()
current_mask_dict = inference_model(model, dataloader, device, use_flip)
for name, mask in current_mask_dict.items():
mask_dict[name] = (mask_dict[name] * pred_idx + mask) / (pred_idx + 1)
if 'RESULT_FOLDER' in inference_config:
result_path = Path(inference_config['RESULT_FOLDER'], inference_config['RESULT'])
else:
result_path = Path(experiment_folder, inference_config['RESULT'])
with open(result_path, 'wb') as handle:
pickle.dump(mask_dict, handle, protocol=pickle.HIGHEST_PROTOCOL)
def test_serialization_v2_conversion_without_totensor():
current_directory = os.path.dirname(os.path.abspath(__file__))
files_directory = os.path.join(current_directory, "files")
transform_1_1_0 = A.load(
os.path.join(files_directory,
"transform_v1.1.0_without_totensor.json"))
with open(
os.path.join(files_directory,
"output_v1.1.0_without_totensor.json")) as f:
output_1_1_0 = json.load(f)
np.random.seed(42)
image = np.random.randint(low=0,
high=255,
size=(256, 256, 3),
dtype=np.uint8)
random.seed(42)
transformed_image = transform_1_1_0(image=image)["image"]
assert transformed_image.tolist() == output_1_1_0
def main():
args = parse_args()
config = get_config(args.config)
transform = A.load(config['data_params']['transform']['train'], 'yaml')
transform.transforms = transform.transforms[:-1]
img_filenames, mask_filenames, non_emptiness = make_filenames(
data_folder=config['data_params']['data_folder'],
mode='train',
fold='0',
folds_path=config['data_params']['folds_path'])
dataset = PneumothoraxDataset(img_filenames,
mask_filenames,
transform=transform,
non_emptiness=non_emptiness)
for sample in dataset:
image = sample['image']
mask = sample['mask']
plt.figure(figsize=(20, 10))
plt.imshow(np.hstack([image, np.stack([mask, mask, mask], axis=-1)]))
plt.show()
if __name__ == '__main__':
args = argparser()
config_path = Path(args['config'].strip('/'))
experiment_folder = config_path.parents[0]
inference_config = load_yaml(config_path)
batch_size = inference_config['BATCH_SIZE']
device = inference_config['DEVICE']
module = importlib.import_module(inference_config['MODEL']['PY'])
model_class = getattr(module, inference_config['MODEL']['CLASS'])
model = model_class(
**inference_config['MODEL'].get('ARGS', None)).to(device)
num_workers = inference_config['WORKERS']
transform = albu.load(inference_config['TEST_TRANSFORMS'])
dataset_folder = inference_config['DATA_DIRECTORY']
dataset = PneumothoraxDataset(data_folder=dataset_folder,
mode='test',
transform=transform)
dataloader = torch.utils.data.DataLoader(dataset=dataset,
batch_size=batch_size,
num_workers=num_workers,
shuffle=False)
use_flip = inference_config['FLIP']
checkpoints_list = build_checkpoints_list(inference_config)
result_path = Path(experiment_folder, inference_config['RESULT'])
mask_dict = defaultdict(int)
for pred_idx, checkpoint_path in enumerate(checkpoints_list):
A.InvertImg(always_apply=False, p=1.0),
A.MotionBlur(always_apply=False, p=1.0, blur_limit=(3, 7)),
A.OpticalDistortion(always_apply=False, p=1.0, distort_limit=(-0.3, 0.3), shift_limit=(-0.05, 0.05), interpolation=0, border_mode=0, value=(0, 0, 0), mask_value=None),
A.RandomFog(always_apply=False, p=1.0, fog_coef_lower=0.1, fog_coef_upper=0.45, alpha_coef=0.5)
], p=1.0)
aug_seq = A.Compose([
A.Resize(IMG_SIZE, IMG_SIZE),
aug_seq1,
aug_seq2,
aug_seq3,
aug_seq4,
A.Normalize((0.5, 0.5, 0.5), (0.5, 0.5, 0.5)),
])
aug_path = '/home/jitesh/prj/classification/test/bolt/aug/aug_seq.json'
A.save(aug_seq, aug_path)
loaded_transform = A.load(aug_path)
# In[6]:
class BoltDataset(Dataset):
def __init__(self, file_list, dir, mode='train', transform = None, test_label: int=1):
self.file_list = file_list
self.dir = dir
self.mode= mode
# self.transform = transform
self.test_label = test_label
if self.mode == 'train':
# print(self.file_list)
# if 'b00' in self.file_list[0]:
if 'b10' in self.file_list[0]:
self.label = 0
else:
import cv2
import numpy as np
import os
import pandas as pd
from torch.utils.data import Dataset
import albumentations as albu
from albumentations.pytorch.transforms import ToTensor
transform_path = "../configures/train_transforms_complex_512.json"
transform = albu.load(transform_path)
class SIIMDataset(Dataset):
def __init__(self, folder, img_size=512):
self.root = folder
self.to_tensor = ToTensor()
df = pd.read_csv('../dataset/train_folds_5.csv')
self.image_name_list = df[df['exist_labels'] == 1]['fname'].to_list()
self.img_size = img_size
print("number of sample: ", self.__len__())
def __getitem__(self, idx):
image_id = self.image_name_list[idx]
size = self.img_size
image_path = os.path.join(self.root, 'train', image_id)
mask_path = os.path.join(self.root, 'mask2', image_id)
image = cv2.imread(image_path)
def main():
args = argparser()
config_folder = Path(args.train_cfg.strip("/"))
# config_folder = Path('experiments/albunet_public/01_train_config_part0.yaml'.strip("/"))
experiment_folder = config_folder.parents[0]
train_config = load_yaml(config_folder)
log_dir = Path(experiment_folder, train_config['LOGGER_DIR'])
log_dir.mkdir(exist_ok=True, parents=True)
main_logger = init_logger(log_dir, 'train_main.log')
seed = train_config['SEED']
init_seed(seed)
main_logger.info(train_config)
if "DEVICE_LIST" in train_config:
os.environ["CUDA_VISIBLE_DEVICES"] = ','.join(
map(str, train_config["DEVICE_LIST"]))
pipeline_name = train_config['PIPELINE_NAME']
train_transform = albu.load(train_config['TRAIN_TRANSFORMS'])
valid_transform = albu.load(train_config['VALID_TRANSFORMS'])
non_empty_mask_proba = train_config.get('NON_EMPTY_MASK_PROBA', 0)
use_sampler = train_config['USE_SAMPLER']
dataset_folder = train_config['DATA_DIRECTORY']
folds_distr_path = train_config['FOLD']['FILE']
num_workers = train_config['WORKERS']
batch_size = train_config['BATCH_SIZE']
n_folds = train_config['FOLD']['NUMBER']
usefolds = map(str, train_config['FOLD']['USEFOLDS'])
# local_metric_fn, global_metric_fn = init_eval_fns(train_config)
binarizer_module = importlib.import_module(
train_config['MASK_BINARIZER']['PY'])
binarizer_class = getattr(binarizer_module,
train_config['MASK_BINARIZER']['CLASS'])
binarizer_fn = binarizer_class(**train_config['MASK_BINARIZER']['ARGS'])
eval_module = importlib.import_module(
train_config['EVALUATION_METRIC']['PY'])
eval_fn = getattr(eval_module, train_config['EVALUATION_METRIC']['CLASS'])
eval_fn = functools.partial(eval_fn,
**train_config['EVALUATION_METRIC']['ARGS'])
for fold_id in usefolds:
main_logger.info('Start training of {} fold....'.format(fold_id))
train_dataset = BodyMorpDataset(data_folder=dataset_folder,
mode='train',
transform=train_transform,
fold_index=fold_id,
folds_distr_path=folds_distr_path)
train_sampler = PartDataSampler(folds_distr_path, fold_id,
non_empty_mask_proba)
if use_sampler:
train_dataloader = DataLoader(dataset=train_dataset,
batch_size=batch_size,
num_workers=num_workers,
sampler=train_sampler)
else:
train_dataloader = DataLoader(dataset=train_dataset,
batch_size=batch_size,
num_workers=num_workers,
shuffle=True)
valid_dataset = BodyMorpDataset(
data_folder=dataset_folder,
mode='val',
transform=valid_transform,
fold_index=str(fold_id),
folds_distr_path=folds_distr_path,
)
valid_dataloader = DataLoader(dataset=valid_dataset,
batch_size=batch_size,
num_workers=num_workers,
shuffle=False)
train_fold(train_config, experiment_folder, pipeline_name, log_dir,
fold_id, train_dataloader, valid_dataloader, binarizer_fn,
eval_fn)
def main():
args = argparser()
config_folder = Path(args.train_cfg.strip("/"))
experiment_folder = config_folder.parents[0]
train_config = load_yaml(config_folder)
log_dir = Path(experiment_folder, train_config['LOGGER_DIR'])
log_dir.mkdir(exist_ok=True, parents=True)
main_logger = init_logger(log_dir, 'train_main.log')
seed = train_config['SEED']
init_seed(seed)
main_logger.info(train_config)
if "DEVICE_LIST" in train_config:
os.environ["CUDA_VISIBLE_DEVICES"] = ','.join(
map(str, train_config["DEVICE_LIST"]))
pipeline_name = train_config['PIPELINE_NAME']
dataset_folder = train_config['DATA_DIRECTORY']
train_transform = albu.load(train_config['TRAIN_TRANSFORMS'])
valid_transform = albu.load(train_config['VALID_TRANSFORMS'])
non_empty_mask_proba = train_config.get('NON_EMPTY_MASK_PROBA', 0)
use_sampler = train_config['USE_SAMPLER']
dataset_folder = train_config['DATA_DIRECTORY']
folds_distr_path = train_config['FOLD']['FILE']
num_workers = train_config['WORKERS']
batch_size = train_config['BATCH_SIZE']
n_folds = train_config['FOLD']['NUMBER']
usefolds = map(str, train_config['FOLD']['USEFOLDS'])
local_metric_fn, global_metric_fn = init_eval_fns(train_config)
for fold_id in usefolds:
main_logger.info('Start training of {} fold....'.format(fold_id))
train_dataset = PneumothoraxDataset(
data_folder=dataset_folder,
mode='train',
transform=train_transform,
fold_index=fold_id,
folds_distr_path=folds_distr_path,
)
train_sampler = PneumoSampler(folds_distr_path, fold_id,
non_empty_mask_proba)
if use_sampler:
train_dataloader = DataLoader(dataset=train_dataset,
batch_size=batch_size,
num_workers=num_workers,
sampler=train_sampler)
else:
train_dataloader = DataLoader(dataset=train_dataset,
batch_size=batch_size,
num_workers=num_workers,
shuffle=True)
valid_dataset = PneumothoraxDataset(
data_folder=dataset_folder,
mode='val',
transform=valid_transform,
fold_index=str(fold_id),
folds_distr_path=folds_distr_path,
)
valid_dataloader = DataLoader(dataset=valid_dataset,
batch_size=batch_size,
num_workers=num_workers,
shuffle=False)
train_fold(train_config, experiment_folder, pipeline_name, log_dir,
fold_id, train_dataloader, valid_dataloader,
local_metric_fn, global_metric_fn)
def create_examples(anotations_dir, desired_labels, test_split,
albumentations_transforms, base_path):
print()
print("Settings and Creating Augmented Examples...")
if albumentations_transforms is not None:
albumentations_transforms = albu.load(albumentations_transforms)
desired_labels = list(set(desired_labels))
examples = []
USE_ALL_LABELS = False
if not desired_labels:
USE_ALL_LABELS = True
def bounding_box(points):
x_coordinates, y_coordinates = zip(*points)
return min(x_coordinates), min(y_coordinates), max(x_coordinates), max(
y_coordinates)
print()
print('Creating examples')
base_path = FLAGS.base_path
files = glob.glob(os.path.join(anotations_dir, "*json"))
for classification in tqdm(files):
classification = json.load(open(classification))
img_path = classification['imagePath']
img_binary = os.path.join(base_path, img_path)
img = Image.open(img_binary, "r")
#width, height = img.size
width = classification["imageWidth"]
height = classification["imageHeight"]
width, height = float(width), float(height)
filename = classification['imagePath']
temp_img_name = f'temp_img.{img.format.lower()}'
img.save(temp_img_name)
with tf.io.gfile.GFile(temp_img_name, 'rb') as gfile:
encoded_img = gfile.read()
os.remove(temp_img_name)
xmins = []
xmaxs = []
ymins = []
ymaxs = []
classes_text = []
classes = []
labels = classification['shapes']
#talvez um loop para percorrer as lista de objetos
objetos = labels
for itens in objetos:
label = itens["label"]
if USE_ALL_LABELS:
if label not in desired_labels:
desired_labels.append(label)
if label in desired_labels:
coords = itens["points"]
x1, y1, x2, y2 = bounding_box(coords)
x1 = x1 / width #Normalize BBox
x2 = x2 / width #Normalize BBox
y1 = y1 / height #Normalize BBox
y2 = y2 / height #Normalize BBox
xmins.append(float(x1))
xmaxs.append(float(x2))
ymins.append(float(y1))
ymaxs.append(float(y2))
class_index = desired_labels.index(label) + 1
classes_text.append(str.encode(label))
classes.append(class_index)
example = dict()
example['img_height'] = int(height)
example['img_width'] = int(width)
example['filename'] = str.encode(filename)
example['encoded_img'] = encoded_img
example['img_format'] = str.encode(img.format.lower())
example['xmins'] = xmins
example['xmaxs'] = xmaxs
example['ymins'] = ymins
example['ymaxs'] = ymaxs
example['classes_text'] = classes_text
example['classes'] = classes
examples.append(example)
if albumentations_transforms is not None:
np_img = np.asarray(img)
# Prepare bbox in Albumentations format: [x_min, y_min, x_max, y_max]
bboxes = []
for bbox in list(
zip(example['xmins'], example['ymins'], example['xmaxs'],
example['ymaxs'])):
bboxes.append(bbox)
annotations = {
'image': np_img,
'bboxes': bboxes,
'classes_text': example['classes_text']
}
augmented_annotations = albumentations_transforms(**annotations)
# Create new Example
augmented_img = augmented_annotations['image']
img = Image.fromarray(np.uint8(augmented_img))
width, height = img.size
width, height = float(width), float(height)
splitted_filename = filename.split('.')
splitted_filename[-2] = splitted_filename[-2] + '-augmented'
filename = '.'.join(splitted_filename)
img.save(temp_img_name)
img = Image.open(temp_img_name)
with tf.io.gfile.GFile(temp_img_name, 'rb') as gfile:
encoded_img = gfile.read()
os.remove(temp_img_name)
xmins = []
xmaxs = []
ymins = []
ymaxs = []
for bbox in augmented_annotations['bboxes']:
# Albumentations format: [x_min, y_min, x_max, y_max]
xs = [bbox[0], bbox[2]]
ys = [bbox[1], bbox[3]]
xmins.append(min(xs))
xmaxs.append(max(xs))
ymins.append(min(ys))
ymaxs.append(max(ys))
classes_text = augmented_annotations['classes_text']
classes = [
desired_labels.index(label.decode('utf-8')) + 1
for label in classes_text
]
example = dict()
example['img_height'] = int(height)
example['img_width'] = int(width)
example['filename'] = str.encode(filename)
example['encoded_img'] = encoded_img
example['img_format'] = str.encode(img.format.lower())
example['xmins'] = xmins
example['xmaxs'] = xmaxs
example['ymins'] = ymins
example['ymaxs'] = ymaxs
example['classes_text'] = classes_text
example['classes'] = classes
examples.append(example)
random.shuffle(examples)
split = int(len(examples) * (1 - test_split))
train_examples = examples[:split]
test_examples = examples[split:]
random.shuffle(train_examples)
random.shuffle(test_examples)
class_id_set = set()
for example in examples:
for class_id in zip(example['classes'], example['classes_text']):
class_id_set.add(class_id)
class_id_set = sorted(class_id_set)
category_index = {k: v.decode("utf-8") for k, v in class_id_set}
category_index = json.dumps(category_index)
with open('category_index.json', 'w') as f:
f.write(category_index)
print(),
print(f'TOTAL EXAMPLES : {len(examples)}')
print(f'TRAIN EXAMPLES : {len(train_examples)}')
print(f'TEST EXAMPLES : {len(test_examples)}')
print(f'TOTAL CLASSES : {len(class_id_set)}')
for class_id in class_id_set:
print(f' - {class_id[1].decode("utf-8")} ({class_id[0]})')
return train_examples, test_examples
def make_transforms(transform: Dict[str, str], mode: str):
_transform = albu.load(transform[mode], 'yaml')
_transform.transforms = albu.Compose(
[*_transform.transforms, ToTensorV2()])
return _transform
log_dir.mkdir(parents=True, exist_ok=True)
main_logger = helpers.init_logger(log_dir, 'train_main.log')
seed = train_config['SEED']
helpers.init_seed(seed)
main_logger.info(train_config)
if "DEVICE_LIST" in train_config:
os.environ['CUDA_VISIBLE_DEVICES'] = ','.join(
map(str, train_config['DEVICE_LIST']))
pipeline_name = train_config['PIPELINE_NAME']
dataset_folder = train_config['DATA_DIRECTORY']
train_transform = albu.load(train_config['TRAIN_TRANSFORMS'])
val_transform = albu.load(train_config['VAL_TRANSFORMS'])
# ? non_empty_mask_prob/ use_sampler is not sure
non_empty_mask_prob = train_config.get('NON_EMPTY_MASK_PROB', 0)
use_sampler = train_config['USE_SAMPLER']
dataset_folder = train_config['DATA_DIRECTORY']
folds_distr_path = train_config['FOLD']['FILE']
num_workers = train_config['WORKERS']
batch_size = train_config['BATCH_SIZE']
n_folds = train_config['FOLD']['NUMBER']
usefolds = map(str, train_config['FOLD']['USEFOLDS'])
def main(cfg: DictConfig):
cwd = Path(get_original_cwd())
# overwrite config if continue training from checkpoint
resume_cfg = None
if "resume" in cfg:
cfg_path = cwd / cfg.resume / ".hydra/config.yaml"
print(f"Continue from: {cfg.resume}")
# Overwrite everything except device
# TODO config merger (perhaps continue training with the same optimizer but other lrs?)
resume_cfg = OmegaConf.load(cfg_path)
cfg.model = resume_cfg.model
if cfg.train.num_epochs == 0:
cfg.data.scale_factor = resume_cfg.data.scale_factor
OmegaConf.save(cfg, ".hydra/config.yaml")
print(OmegaConf.to_yaml(cfg))
device = set_device_id(cfg.device)
set_seed(cfg.seed, device=device)
# Augmentations
if cfg.data.aug == "auto":
transforms = albu.load(cwd / "autoalbument/autoconfig.json")
else:
transforms = D.get_training_augmentations()
if OmegaConf.is_missing(cfg.model, "convert_bottleneck"):
cfg.model.convert_bottleneck = (0, 0, 0)
# Model
print(f"Setup model {cfg.model.arch} {cfg.model.encoder_name} "
f"convert_bn={cfg.model.convert_bn} "
f"convert_bottleneck={cfg.model.convert_bottleneck} ")
model = get_segmentation_model(
arch=cfg.model.arch,
encoder_name=cfg.model.encoder_name,
encoder_weights=cfg.model.encoder_weights,
classes=1,
convert_bn=cfg.model.convert_bn,
convert_bottleneck=cfg.model.convert_bottleneck,
# decoder_attention_type="scse", # TODO to config
)
model = model.to(device)
model.train()
print(model)
# Optimization
# Reduce LR for pretrained encoder
layerwise_params = {
"encoder*":
dict(lr=cfg.optim.lr_encoder, weight_decay=cfg.optim.wd_encoder)
}
model_params = cutils.process_model_params(
model, layerwise_params=layerwise_params)
# Select optimizer
optimizer = get_optimizer(
name=cfg.optim.name,
model_params=model_params,
lr=cfg.optim.lr,
wd=cfg.optim.wd,
lookahead=cfg.optim.lookahead,
)
criterion = {
"dice": DiceLoss(),
# "dice": SoftDiceLoss(mode="binary", smooth=1e-7),
"iou": IoULoss(),
"bce": nn.BCEWithLogitsLoss(),
"lovasz": LovaszLossBinary(),
"focal_tversky": FocalTverskyLoss(eps=1e-7, alpha=0.7, gamma=0.75),
}
# Load states if resuming training
if "resume" in cfg:
checkpoint_path = (cwd / cfg.resume / cfg.train.logdir /
"checkpoints/best_full.pth")
if checkpoint_path.exists():
print(f"\nLoading checkpoint {str(checkpoint_path)}")
checkpoint = cutils.load_checkpoint(checkpoint_path)
cutils.unpack_checkpoint(
checkpoint=checkpoint,
model=model,
optimizer=optimizer
if resume_cfg.optim.name == cfg.optim.name else None,
criterion=criterion,
)
else:
raise ValueError("Nothing to resume, checkpoint missing")
# We could only want to validate resume, in this case skip training routine
best_th = 0.5
stats = None
if cfg.data.stats:
print(f"Use statistics from file: {cfg.data.stats}")
stats = cwd / cfg.data.stats
if cfg.train.num_epochs is not None:
callbacks = [
# Each criterion is calculated separately.
CriterionCallback(input_key="mask",
prefix="loss_dice",
criterion_key="dice"),
CriterionCallback(input_key="mask",
prefix="loss_iou",
criterion_key="iou"),
CriterionCallback(input_key="mask",
prefix="loss_bce",
criterion_key="bce"),
CriterionCallback(input_key="mask",
prefix="loss_lovasz",
criterion_key="lovasz"),
CriterionCallback(
input_key="mask",
prefix="loss_focal_tversky",
criterion_key="focal_tversky",
),
# And only then we aggregate everything into one loss.
MetricAggregationCallback(
prefix="loss",
mode="weighted_sum", # can be "sum", "weighted_sum" or "mean"
# because we want weighted sum, we need to add scale for each loss
metrics={
"loss_dice": cfg.loss.dice,
"loss_iou": cfg.loss.iou,
"loss_bce": cfg.loss.bce,
"loss_lovasz": cfg.loss.lovasz,
"loss_focal_tversky": cfg.loss.focal_tversky,
},
),
# metrics
DiceCallback(input_key="mask"),
IouCallback(input_key="mask"),
# gradient accumulation
OptimizerCallback(accumulation_steps=cfg.optim.accumulate),
# early stopping
SchedulerCallback(reduced_metric="loss_dice",
mode=cfg.scheduler.mode),
EarlyStoppingCallback(**cfg.scheduler.early_stopping,
minimize=False),
# TODO WandbLogger works poorly with multistage right now
WandbLogger(project=cfg.project, config=dict(cfg)),
# CheckpointCallback(save_n_best=cfg.checkpoint.save_n_best),
]
# Training
runner = SupervisedRunner(device=device,
input_key="image",
input_target_key="mask")
# TODO Scheduler does not work now, every stage restarts from base lr
scheduler_warm_restart = optim.lr_scheduler.MultiStepLR(
optimizer,
milestones=[1, 2],
gamma=10,
)
for i, (size, num_epochs) in enumerate(
zip(cfg.data.sizes, cfg.train.num_epochs)):
scale = size / 1024
print(
f"Training stage {i}, scale {scale}, size {size}, epochs {num_epochs}"
)
# Datasets
(
train_ds,
valid_ds,
train_images,
val_images,
) = D.get_train_valid_datasets_from_path(
# path=(cwd / cfg.data.path),
path=(cwd / f"data/hubmap-{size}x{size}/"),
train_ids=cfg.data.train_ids,
valid_ids=cfg.data.valid_ids,
seed=cfg.seed,
valid_split=cfg.data.valid_split,
mean=cfg.data.mean,
std=cfg.data.std,
transforms=transforms,
stats=stats,
)
train_bs = int(cfg.loader.train_bs / (scale**2))
valid_bs = int(cfg.loader.valid_bs / (scale**2))
print(
f"train: {len(train_ds)}; bs {train_bs}",
f"valid: {len(valid_ds)}, bs {valid_bs}",
)
# Data loaders
data_loaders = D.get_data_loaders(
train_ds=train_ds,
valid_ds=valid_ds,
train_bs=train_bs,
valid_bs=valid_bs,
num_workers=cfg.loader.num_workers,
)
# Select scheduler
scheduler = get_scheduler(
name=cfg.scheduler.type,
optimizer=optimizer,
num_epochs=num_epochs * (len(data_loaders["train"]) if
cfg.scheduler.mode == "batch" else 1),
eta_min=scheduler_warm_restart.get_last_lr()[0] /
cfg.scheduler.eta_min_factor,
plateau=cfg.scheduler.plateau,
)
runner.train(
model=model,
criterion=criterion,
optimizer=optimizer,
scheduler=scheduler,
callbacks=callbacks,
logdir=cfg.train.logdir,
loaders=data_loaders,
num_epochs=num_epochs,
verbose=True,
main_metric=cfg.train.main_metric,
load_best_on_end=True,
minimize_metric=False,
check=cfg.check,
fp16=dict(amp=cfg.amp),
)
# Set new initial LR for optimizer after restart
scheduler_warm_restart.step()
print(
f"New LR for warm restart {scheduler_warm_restart.get_last_lr()[0]}"
)
# Find optimal threshold for dice score
model.eval()
best_th, dices = find_dice_threshold(model, data_loaders["valid"])
print("Best dice threshold", best_th, np.max(dices[1]))
np.save(f"dices_{size}.npy", dices)
else:
print("Validation only")
# Datasets
size = cfg.data.sizes[-1]
train_ds, valid_ds = D.get_train_valid_datasets_from_path(
# path=(cwd / cfg.data.path),
path=(cwd / f"data/hubmap-{size}x{size}/"),
train_ids=cfg.data.train_ids,
valid_ids=cfg.data.valid_ids,
seed=cfg.seed,
valid_split=cfg.data.valid_split,
mean=cfg.data.mean,
std=cfg.data.std,
transforms=transforms,
stats=stats,
)
train_bs = int(cfg.loader.train_bs / (cfg.data.scale_factor**2))
valid_bs = int(cfg.loader.valid_bs / (cfg.data.scale_factor**2))
print(
f"train: {len(train_ds)}; bs {train_bs}",
f"valid: {len(valid_ds)}, bs {valid_bs}",
)
# Data loaders
data_loaders = D.get_data_loaders(
train_ds=train_ds,
valid_ds=valid_ds,
train_bs=train_bs,
valid_bs=valid_bs,
num_workers=cfg.loader.num_workers,
)
# Find optimal threshold for dice score
model.eval()
best_th, dices = find_dice_threshold(model, data_loaders["valid"])
print("Best dice threshold", best_th, np.max(dices[1]))
np.save(f"dices_val.npy", dices)
#
# # Load best checkpoint
# checkpoint_path = Path(cfg.train.logdir) / "checkpoints/best.pth"
# if checkpoint_path.exists():
# print(f"\nLoading checkpoint {str(checkpoint_path)}")
# state_dict = torch.load(checkpoint_path, map_location=torch.device("cpu"))[
# "model_state_dict"
# ]
# model.load_state_dict(state_dict)
# del state_dict
# model = model.to(device)
# Load config for updating with threshold and metric
# (otherwise loading do not work)
cfg = OmegaConf.load(".hydra/config.yaml")
cfg.threshold = float(best_th)
# Evaluate on full-size image if valid_ids is non-empty
df_train = pd.read_csv(cwd / "data/train.csv")
df_train = {
r["id"]: r["encoding"]
for r in df_train.to_dict(orient="record")
}
dices = []
unique_ids = sorted(
set(
str(p).split("/")[-1].split("_")[0]
for p in (cwd / cfg.data.path / "train").iterdir()))
size = cfg.data.sizes[-1]
scale = size / 1024
for image_id in cfg.data.valid_ids:
image_name = unique_ids[image_id]
print(f"\nValidate for {image_name}")
rle_pred, shape = inference_one(
image_path=(cwd / f"data/train/{image_name}.tiff"),
target_path=Path("."),
cfg=cfg,
model=model,
scale_factor=scale,
tile_size=cfg.data.tile_size,
tile_step=cfg.data.tile_step,
threshold=best_th,
save_raw=False,
tta_mode=None,
weight="pyramid",
device=device,
filter_crops="tissue",
stats=stats,
)
print("Predict", shape)
pred = rle_decode(rle_pred["predicted"], shape)
mask = rle_decode(df_train[image_name], shape)
assert pred.shape == mask.shape, f"pred {pred.shape}, mask {mask.shape}"
assert pred.shape == shape, f"pred {pred.shape}, expected {shape}"
dices.append(
dice(
torch.from_numpy(pred).type(torch.uint8),
torch.from_numpy(mask).type(torch.uint8),
threshold=None,
activation="none",
))
print("Full image dice:", np.mean(dices))
OmegaConf.save(cfg, ".hydra/config.yaml")
return