/
interface.py
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/
interface.py
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import cv2
import random
import numpy as np
from PIL import Image
from PIL import ImageOps
from PIL import ImageFilter
from torch import Tensor
from typing import List
from typing import Tuple
from typing import Optional
from skimage.transform import resize
from torchvision.transforms import transforms
from torchvision.transforms import InterpolationMode
from .A import *
from .pt import *
from .general import *
from .....data import Compose
from .....data import Transforms
from .....misc.toolkit import min_max_normalize
from .....misc.toolkit import imagenet_normalize
@Transforms.register("for_generation")
class TransformForGeneration(Compose):
def __init__(
self,
img_size: Optional[int] = None,
*,
inverse: bool = False,
to_gray: bool = False,
to_rgb: bool = False,
):
transform_list: List[Transforms] = []
if img_size is not None:
transform_list.extend([Resize(img_size), ToArray()])
if to_rgb:
if to_gray:
msg = "should not use `to_rgb` and `to_gray` at the same time"
raise ValueError(msg)
transform_list.append(ToRGB())
elif to_gray:
transform_list.append(ToGray())
transform_list.extend([ToTensor(), N1To1()])
if inverse:
transform_list.append(InverseN1To1())
super().__init__(transform_list)
@Transforms.register("for_imagenet")
class TransformForImagenet(Compose):
def __init__(self, img_size: int = 224): # type: ignore
super().__init__([AResize(img_size), ANormalize(), ToTensor()])
@Transforms.register("ssl")
class SSLTransform(Transforms):
class Augmentation:
class GaussianBlur:
def __init__(
self,
p: float = 0.5,
radius_min: float = 0.1,
radius_max: float = 2.0,
):
self.prob = p
self.radius_min = radius_min
self.radius_max = radius_max
def __call__(self, img: Image) -> Image:
if random.random() > self.prob:
return img
r = random.uniform(self.radius_min, self.radius_max)
return img.filter(ImageFilter.GaussianBlur(radius=r))
class Solarization:
def __init__(self, p: float):
self.p = p
def __call__(self, img: Image) -> Image:
if random.random() > self.p:
return img
return ImageOps.solarize(img)
def __init__(
self,
img_size: int,
to_gray: bool,
local_crops_number: int,
local_crops_scale: Tuple[float, float],
global_crops_scale: Tuple[float, float],
):
self.to_gray = ToGray().fn if to_gray else None
flip_and_color_jitter = transforms.Compose(
[
transforms.RandomHorizontalFlip(p=0.5),
ColorJitter(p=0.8),
transforms.RandomGrayscale(p=0.2),
]
)
normalize = transforms.Compose(
[
transforms.ToTensor(),
transforms.Normalize((0.485, 0.456, 0.406), (0.229, 0.224, 0.225)),
]
)
# global crop 1
self.global_transform1 = transforms.Compose(
[
transforms.RandomResizedCrop(
img_size,
scale=global_crops_scale,
interpolation=InterpolationMode.BICUBIC,
),
flip_and_color_jitter,
self.GaussianBlur(1.0),
normalize,
]
)
# global crop 2
self.global_transform2 = transforms.Compose(
[
transforms.RandomResizedCrop(
img_size,
scale=global_crops_scale,
interpolation=InterpolationMode.BICUBIC,
),
flip_and_color_jitter,
self.GaussianBlur(0.1),
self.Solarization(0.2),
normalize,
]
)
# local crop
self.local_crops_number = local_crops_number
self.local_transform = transforms.Compose(
[
transforms.RandomResizedCrop(
int(img_size * 3 / 7),
scale=local_crops_scale,
interpolation=InterpolationMode.BICUBIC,
),
flip_and_color_jitter,
self.GaussianBlur(0.5),
normalize,
]
)
def __call__(self, image: Image) -> Image:
image = image.convert("RGB")
crops = [self.global_transform1(image), self.global_transform2(image)]
for _ in range(self.local_crops_number):
crops.append(self.local_transform(image))
if self.to_gray is not None:
crops = [self.to_gray(crop) for crop in crops]
return crops
def __init__(
self,
img_size: int,
to_gray: bool = False,
local_crops_number: int = 8,
local_crops_scale: Tuple[float, float] = (0.05, 0.4),
global_crops_scale: Tuple[float, float] = (0.4, 1.0),
):
super().__init__()
self.fn = self.Augmentation(
img_size,
to_gray,
local_crops_number,
local_crops_scale,
global_crops_scale,
)
@property
def need_batch_process(self) -> bool:
return False
@Transforms.register("ssl_test")
class SSLTestTransform(Transforms):
def __init__(self, img_size: int, to_gray: bool = False):
super().__init__()
self.img_size = img_size
self.to_gray = ToGray().fn if to_gray else None
self.larger_size = int(round(img_size * 8.0 / 7.0))
def fn(self, img: Image.Image) -> Tensor:
img = img.convert("RGB")
img.thumbnail((self.larger_size, self.larger_size), Image.ANTIALIAS)
img_arr = np.array(img)
resized_img = resize(img_arr, (self.img_size, self.img_size), mode="constant")
resized_img = resized_img.astype(np.float32)
img_arr = min_max_normalize(resized_img)
img_arr = imagenet_normalize(img_arr)
if self.to_gray is not None:
img_arr = self.to_gray(img_arr)
return img_arr.transpose([2, 0, 1])
@property
def need_batch_process(self) -> bool:
return False
@Transforms.register("a_bundle")
class ABundleTransform(Compose):
def __init__(
self,
*,
resize_size: int = 320,
crop_size: Optional[int] = 288,
p: float = 0.5,
label_alias: Optional[str] = None,
):
transform_list: List[Transforms]
transform_list = [AResize(resize_size, label_alias=label_alias)]
if crop_size is not None:
transform_list.append(ARandomCrop(crop_size, label_alias=label_alias))
transform_list.extend(
[
AHFlip(p, label_alias=label_alias),
AVFlip(p, label_alias=label_alias),
AShiftScaleRotate(p, cv2.BORDER_CONSTANT, label_alias=label_alias),
ARGBShift(p=p, label_alias=label_alias),
ASolarize(p=p, label_alias=label_alias),
AGaussianBlur(p=p, label_alias=label_alias),
AHueSaturationValue(p=p, label_alias=label_alias),
ARandomBrightnessContrast(p=p, label_alias=label_alias),
ANormalize(label_alias=label_alias),
AToTensor(label_alias=label_alias),
]
)
super().__init__(transform_list)
@Transforms.register("a_bundle_test")
class ABundleTestTransform(Compose):
def __init__(self, *, resize_size: int = 320, label_alias: Optional[str] = None):
super().__init__(
[
AResize(resize_size, label_alias=label_alias),
ANormalize(label_alias=label_alias),
AToTensor(label_alias=label_alias),
]
)
@Transforms.register("style_transfer")
class StyleTransferTransform(Compose):
def __init__(
self,
*,
resize_size: int = 512,
crop_size: int = 256,
label_alias: Optional[str] = None,
):
super().__init__(
[
AResize(resize_size, label_alias=label_alias),
ARandomCrop(crop_size, label_alias=label_alias),
AToRGB(),
AToTensor(label_alias=label_alias),
]
)
@Transforms.register("style_transfer_test")
class StyleTransferTestTransform(Compose):
def __init__(self, *, resize_size: int = 256, label_alias: Optional[str] = None):
super().__init__(
[
AResize(resize_size, label_alias=label_alias),
AToRGB(),
AToTensor(label_alias=label_alias),
]
)
@Transforms.register("clf")
class ClassificationTransform(Compose):
def __init__(
self,
*,
p: float = 0.5,
resize_size: int = 512,
label_alias: Optional[str] = None,
):
if label_alias is not None:
raise ValueError("`label_alias` should not be provided in `Classification`")
super().__init__(
[
AResize(int(resize_size * 1.2)),
ToRGB(),
ARandomCrop(resize_size),
AHFlip(p),
AToTensor(),
ColorJitter(p=min(1.0, p * 1.6)),
RandomErase(p=p),
Normalize(),
]
)
@Transforms.register("clf_test")
class ClassificationTestTransform(Compose):
def __init__(self, *, resize_size: int = 512, label_alias: Optional[str] = None):
if label_alias is not None:
raise ValueError("`label_alias` should not be provided in `Classification`")
super().__init__([AResize(resize_size), ToRGB(), ANormalize(), AToTensor()])
__all__ = [
"TransformForGeneration",
"TransformForImagenet",
"SSLTransform",
"SSLTestTransform",
"ABundleTransform",
"ABundleTestTransform",
"StyleTransferTransform",
"StyleTransferTestTransform",
"ClassificationTransform",
"ClassificationTestTransform",
]