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import csv |
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import json |
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import os |
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import datasets |
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from PIL import Image |
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import tarfile |
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from io import BytesIO |
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import logging |
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import datasets |
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from datasets.utils.logging import get_logger, tqdm |
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logger = get_logger(__name__) |
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_DESCRIPTION = "WikiChurches is a dataset for architectural style classification" |
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_HOMEPAGE = "https://huggingface.co/datasets/LZSI-2/WikiChurches" |
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_LICENSE = "cc-by-nc-4.0" |
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_CITATION = """@article{barz2021wikichurches, |
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title={WikiChurches: A Fine-Grained Dataset of Architectural Styles with Real-World Challenges}, |
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author={Barz, Björn and Denzler, Joachim}, |
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journal={arXiv preprint arXiv:2108.06959}, |
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year={2021} |
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}""" |
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TAR_PARTS = 40 |
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_TAR_URLS =[f"https://huggingface.co/datasets/LZSI-2/WikiChurches/resolve/main/images/images_part{part_id}.tar" for part_id in range(1, TAR_PARTS + 1)] |
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_URLS = { |
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"churches_json": "https://huggingface.co/datasets/LZSI-2/WikiChurches/resolve/main/churches.json", |
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"style_levels": "https://huggingface.co/datasets/LZSI-2/WikiChurches/resolve/main/style_levels.json", |
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"style_names": "https://huggingface.co/datasets/LZSI-2/WikiChurches/resolve/main/style_names.txt", |
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} |
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class SacredBuildingsDataset(datasets.GeneratorBasedBuilder): |
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"""Sacred Buildings Dataset with support for different hierarchy levels.""" |
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VERSION = datasets.Version("0.0.1") |
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BUILDER_CONFIGS = [ |
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datasets.BuilderConfig( |
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name="wc4", |
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version=VERSION, |
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description="Wiki Churches 4 main classes" |
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), |
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datasets.BuilderConfig( |
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name="wc6", |
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version=VERSION, |
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description="Wiki Churches 6 largest classes" |
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), |
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datasets.BuilderConfig( |
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name="wc14", |
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version=VERSION, |
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description="Wiki Churches 14 first-level classes" |
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), |
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] |
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DEFAULT_CONFIG_NAME = "wc4" |
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def _info(self): |
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features = datasets.Features({ |
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"image": datasets.Image(), |
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"style": datasets.Value("string"), |
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"church_id": datasets.Value("string"), |
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}) |
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return datasets.DatasetInfo( |
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description=_DESCRIPTION, |
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features=features, |
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homepage=_HOMEPAGE, |
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license=_LICENSE, |
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citation=_CITATION, |
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) |
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def _get_style_names(self, style_levels): |
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return style_levels.get(self.config.name, {}) |
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def _split_generators(self, dl_manager): |
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"""Returns SplitGenerators.""" |
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downloaded_files = dl_manager.download(_TAR_URLS) |
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data_dir = dl_manager.download_and_extract(_URLS) |
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return [ |
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datasets.SplitGenerator( |
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name=datasets.Split.TRAIN, |
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gen_kwargs={ |
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"file_paths": downloaded_files, |
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"data_dir": data_dir, |
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}, |
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), |
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] |
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def _trace_to_top_parent(self, style_id, hierarchy): |
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while style_id in hierarchy and hierarchy[style_id]["parent"]: |
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style_id = hierarchy[style_id]["parent"] |
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return style_id |
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def _generate_examples(self, file_paths, data_dir): |
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with open(data_dir["churches_json"], "r") as f: |
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churches_data = json.load(f) |
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with open(data_dir["style_levels"], "r") as f: |
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style_levels = json.load(f) |
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style_levels = json.load(open(data_dir["style_levels"], "r")) |
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if self.config.name == "wc4": |
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domain_styles = list(style_levels["statistics"]["styles_by_size"].keys())[:5] |
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elif self.config.name == "wc6": |
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domain_styles = list(style_levels["statistics"]["styles_by_size"].keys())[:7] |
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elif self.config.name == "wc14": |
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domain_styles = list(style_levels["statistics"]["styles_by_size"].keys())[:15] |
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"""Yields examples.""" |
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for filepath in file_paths: |
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logger.info(f"Processing {filepath.split('/')[-1]}") |
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with tarfile.open(filepath, "r") as tar: |
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for member in tqdm(tar.getmembers(), |
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desc=f"{os.path.basename(filepath)}"): |
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if member.isfile(): |
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logger.debug(f"Processing {member.name}") |
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image_file = tar.extractfile(member) |
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church_id = member.name.split("_")[0] |
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image_name = member.name |
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if church_id not in churches_data: |
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continue |
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church_styles = churches_data[church_id]["styles"] |
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top_level_set = set() |
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for s_id in church_styles: |
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top_parent = self._trace_to_top_parent(s_id, style_levels["hierarchy"]) |
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if top_parent in domain_styles: |
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top_level_set.add(top_parent) |
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if len(top_level_set) == 1: |
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label_name = top_level_set.pop() |
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with Image.open(image_file) as image: |
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image = image.convert("RGB") |
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yield image_name, { |
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"image": image, |
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"style": label_name, |
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"church_id": church_id, |
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} |
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else: |
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continue |
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