def augmentation(mode, target_size, prob=0.5, aug_m=2):
'''
description: augmentation
mode: 'train' 'test'
target_size: int or list, the shape of image ,
aug_m: Strength of transform
'''
high_p = prob
low_p = high_p / 2.0
M = aug_m
first_size = [int(x / 0.7) for x in target_size]
if mode == 'train':
return composition.Compose([
transforms.Resize(first_size[0], first_size[1], interpolation=3),
transforms.Flip(p=0.5),
composition.OneOf([
RandomCenterCut(scale=0.1 * M),
transforms.ShiftScaleRotate(shift_limit=0.05 * M,
scale_limit=0.1 * M,
rotate_limit=180,
border_mode=cv2.BORDER_CONSTANT,
value=0),
albumentations.imgaug.transforms.IAAAffine(
shear=(-10 * M, 10 * M), mode='constant')
],
p=high_p),
transforms.RandomBrightnessContrast(
brightness_limit=0.1 * M, contrast_limit=0.03 * M, p=high_p),
transforms.HueSaturationValue(hue_shift_limit=5 * M,
sat_shift_limit=15 * M,
val_shift_limit=10 * M,
p=high_p),
transforms.OpticalDistortion(distort_limit=0.03 * M,
shift_limit=0,
border_mode=cv2.BORDER_CONSTANT,
value=0,
p=low_p),
composition.OneOf([
transforms.Blur(blur_limit=7),
albumentations.imgaug.transforms.IAASharpen(),
transforms.GaussNoise(var_limit=(2.0, 10.0), mean=0),
transforms.ISONoise()
],
p=low_p),
transforms.Resize(target_size[0], target_size[1], interpolation=3),
transforms.Normalize(mean=(0.5, 0.5, 0.5),
std=(0.5, 0.5, 0.5),
max_pixel_value=255.0)
],
p=1)
else:
return composition.Compose([
transforms.Resize(target_size[0], target_size[1], interpolation=3),
transforms.Normalize(mean=(0.5, 0.5, 0.5),
std=(0.5, 0.5, 0.5),
max_pixel_value=255.0)
],
p=1)
def AlbumentationTrainTransform(self):
tf = tc.Compose([
ta.HorizontalFlip(),
ta.Cutout(num_holes=1, max_h_size=16, max_w_size=16),
tp.ToTensor(dict(mean=(0.5, 0.5, 0.5), std=(0.5, 0.5, 0.5)))
])
return lambda img: tf(image=np.array(img))["image"]
def AlbumentationTestTransform(self):
tf = tc.Compose([
tp.ToTensor(
dict(mean=(0.4802, 0.4481, 0.3975),
std=(0.2302, 0.2265, 0.2262)))
])
return lambda img: tf(image=np.array(img))["image"]
def AlbumentationTrainTransform(self):
tf = tc.Compose([ta.PadIfNeeded(4, 4, always_apply=True),
ta.RandomCrop(height=32, width=32, always_apply=True),
ta.Cutout(num_holes = 1, max_h_size=8, max_w_size=8, always_apply=True),
ta.HorizontalFlip(),
tp.ToTensor(dict (mean=(0.5, 0.5, 0.5), std=(0.5, 0.5, 0.5)))
])
return lambda img: tf(image = np.array(img))["image"]
def model10_resnet_train_transforms():
transforms = C.Compose([
A.HorizontalFlip(),
#A.RandomCrop(height=30, width=30, p=5.0),
A.Cutout(num_holes=1, max_h_size=16, max_w_size=16),
P.ToTensor(dict (mean=(0.5, 0.5, 0.5), std=(0.5, 0.5, 0.5)))
])
return lambda img: transforms(image = np.array(img))["image"]
def model12_train_transforms():
transform = C.Compose([
A.PadIfNeeded(min_height=70, min_width=70, border_mode=cv2.BORDER_CONSTANT,
value=0.5),
A.RandomCrop(height=64, width=64),
A.HorizontalFlip(p=0.5),
A.Cutout(num_holes=1, max_h_size=32, max_w_size=32, p=1),
P.ToTensor(dict (mean=(0.4802, 0.4481, 0.3975), std=(0.2302, 0.2265, 0.2262)))
])
return lambda img: transform(image = np.array(img))["image"]
def model11_davidnet_train_transforms():
transform = C.Compose([
A.PadIfNeeded(min_height=36, min_width=36, border_mode=cv2.BORDER_CONSTANT,
value=0.5),
A.RandomCrop(height=32, width=32, p=1),
A.HorizontalFlip(p=0.5),
A.Cutout(num_holes=1, max_h_size=8, max_w_size=8, p=1),
P.ToTensor(dict (mean=(0.5, 0.5, 0.5), std=(0.5, 0.5, 0.5)))
])
return lambda img: transform(image = np.array(img))["image"]
def AlbumentationTrainTransform(self):
tf = tc.Compose([ta.HorizontalFlip(p=0.5),
ta.Rotate(limit=(-20, 20)),
# ta.VerticalFlip(p=0.5),
# ta.Cutout(num_holes=3, max_h_size=8, max_w_size=8, p=0.5),
# ta.Blur(),
# ta.ChannelShuffle(),
# ta.InvertImg(),
ta.RandomCrop(height=30, width=30, p=5.0),
ta.Normalize((0.485, 0.456, 0.406), (0.229, 0.224, 0.225)),
tp.ToTensor()
])
return lambda img: tf(image = np.array(img))["image"]
def AlbumentationTestTransform(self):
tf = tc.Compose([ta.Normalize((0.485, 0.456, 0.406), (0.229, 0.224, 0.225)),
tp.ToTensor()
# tp.ToTensor(dict(mean=(0.4914, 0.4822, 0.4465), std=(0.247, 0.2435, 0.2616)))
])
return lambda img: tf(image = np.array(img))["image"]
def model12_test_transforms():
transform = C.Compose([
P.ToTensor(dict (mean=(0.4802, 0.4481, 0.3975), std=(0.2302, 0.2265, 0.2262)))
])
return lambda img: transform(image = np.array(img))["image"]
def model9_resnet_test_transforms():
transforms = C.Compose([
P.ToTensor(dict (mean=(0.5, 0.5, 0.5), std=(0.5, 0.5, 0.5)))
])
return lambda img: transforms(image = np.array(img))["image"]
