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import os
from pathlib import Path
from typing import Any, Callable, Optional, Union
from .folder import default_loader, ImageFolder
from .utils import download_and_extract_archive
class EuroSAT(ImageFolder):
"""RGB version of the `EuroSAT <https://github.com/phelber/eurosat>`_ Dataset.
For the MS version of the dataset, see
`TorchGeo <https://torchgeo.readthedocs.io/en/stable/api/datasets.html#eurosat>`__.
Args:
root (str or ``pathlib.Path``): Root directory of dataset where ``root/eurosat`` exists.
transform (callable, optional): A function/transform that takes in a PIL image or torch.Tensor, depends on the given loader,
and returns a transformed version. E.g, ``transforms.RandomCrop``
target_transform (callable, optional): A function/transform that takes in the
target and transforms it.
download (bool, optional): If True, downloads the dataset from the internet and
puts it in root directory. If dataset is already downloaded, it is not
downloaded again. Default is False.
loader (callable, optional): A function to load an image given its path.
By default, it uses PIL as its image loader, but users could also pass in
``torchvision.io.decode_image`` for decoding image data into tensors directly.
"""
def __init__(
self,
root: Union[str, Path],
transform: Optional[Callable] = None,
target_transform: Optional[Callable] = None,
download: bool = False,
loader: Callable[[str], Any] = default_loader,
) -> None:
self.root = os.path.expanduser(root)
self._base_folder = os.path.join(self.root, "eurosat")
self._data_folder = os.path.join(self._base_folder, "2750")
if download:
self.download()
if not self._check_exists():
raise RuntimeError("Dataset not found. You can use download=True to download it")
super().__init__(
self._data_folder,
transform=transform,
target_transform=target_transform,
loader=loader,
)
self.root = os.path.expanduser(root)
def __len__(self) -> int:
return len(self.samples)
def _check_exists(self) -> bool:
return os.path.exists(self._data_folder)
def download(self) -> None:
if self._check_exists():
return
os.makedirs(self._base_folder, exist_ok=True)
download_and_extract_archive(
"https://huggingface.co/datasets/torchgeo/eurosat/resolve/c877bcd43f099cd0196738f714544e355477f3fd/EuroSAT.zip",
download_root=self._base_folder,
md5="c8fa014336c82ac7804f0398fcb19387",
)
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