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# Copyright (C) 2022, Pyronear.
# This program is licensed under the Apache License 2.0.
# See LICENSE or go to <https://www.apache.org/licenses/LICENSE-2.0> for full license details.
"""OpenFire dataset."""
import os
import json
import datasets
_HOMEPAGE = "https://pyronear.org/pyro-vision/datasets.html#openfire"
_LICENSE = "Apache License 2.0"
_CITATION = """\
@software{Pyronear_PyroVision_2019,
title={Pyrovision: wildfire early detection},
author={Pyronear contributors},
year={2019},
month={October},
publisher = {GitHub},
howpublished = {\url{https://github.com/pyronear/pyro-vision}}
}
"""
_DESCRIPTION = """\
OpenFire is an image classification dataset for wildfire detection, collected
from web searches.
"""
_REPO = "https://huggingface.co/datasets/pyronear/openfire/resolve/main/data"
_URLS = {
"train": f"{_REPO}/openfire_train.json",
"validation": f"{_REPO}/openfire_val.json",
}
class OpenFire(datasets.GeneratorBasedBuilder):
"""OpenFire dataset."""
VERSION = datasets.Version("1.0.0")
def _info(self):
return datasets.DatasetInfo(
description=_DESCRIPTION,
features=datasets.Features(
{
"image_url": datasets.Value("string", id=None),
"is_wildfire": datasets.Value("bool"),
}
),
supervised_keys=None,
homepage=_HOMEPAGE,
license=_LICENSE,
citation=_CITATION,
)
def _split_generators(self, dl_manager):
data_dir = dl_manager.download_and_extract(_URLS)
return [
datasets.SplitGenerator(
name=datasets.Split.TRAIN,
gen_kwargs={
"annot_file": data_dir["train"],
},
),
datasets.SplitGenerator(
name=datasets.Split.VALIDATION,
gen_kwargs={
"annot_file": data_dir["validation"],
},
),
]
def _generate_examples(self, annot_file):
with open(annot_file, "rb") as f:
urls = json.load(f)
for label in range(2):
for url in urls[str(label)]:
yield idx, {"image_url": url, "is_wildfire": bool(label)}
idx += 1
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