Source code for flash.image.style_transfer.input_transform

# Copyright The PyTorch Lightning team.
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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
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#
#     http://www.apache.org/licenses/LICENSE-2.0
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from dataclasses import dataclass
from typing import Callable

from flash.core.data.io.input import DataKeys
from flash.core.data.io.input_transform import InputTransform
from flash.core.data.transforms import ApplyToKeys
from flash.core.utilities.imports import _TORCHVISION_AVAILABLE

if _TORCHVISION_AVAILABLE:
    from torchvision import transforms as T


[docs]@dataclass
class StyleTransferInputTransform(InputTransform):
    image_size: int = 256

    def per_sample_transform(self) -> Callable:
        return ApplyToKeys(
            DataKeys.INPUT, T.Compose([T.ToTensor(), T.Resize(self.image_size), T.CenterCrop(self.image_size)])
        )