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bc90483 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | # Copyright (c) Meta Platforms, Inc. and affiliates.
#
# This software may be used and distributed in accordance with
# the terms of the DINOv3 License Agreement.
from typing import Any, Tuple
from torchvision.datasets import VisionDataset
from .decoders import Decoder, ImageDataDecoder, TargetDecoder
class ExtendedVisionDataset(VisionDataset):
def __init__(
self,
image_decoder: Decoder = ImageDataDecoder,
target_decoder: Decoder = TargetDecoder,
*args,
**kwargs,
) -> None:
super().__init__(*args, **kwargs) # type: ignore
self.image_decoder = image_decoder
self.target_decoder = target_decoder
def get_image_data(self, index: int) -> bytes:
raise NotImplementedError
def get_target(self, index: int) -> Any:
raise NotImplementedError
def __getitem__(self, index: int) -> Tuple[Any, Any]:
try:
image_data = self.get_image_data(index)
image = self.image_decoder(image_data).decode()
except Exception as e:
raise RuntimeError(f"can not read image for sample {index}") from e
target = self.get_target(index)
target = self.target_decoder(target).decode()
if self.transforms is not None:
image, target = self.transforms(image, target)
return image, target
def __len__(self) -> int:
raise NotImplementedError
|