59 lines
No EOL
2.4 KiB
Python
59 lines
No EOL
2.4 KiB
Python
import json
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import torch
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from pathlib import Path
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from docling.datamodel.base_models import InputFormat
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from docling.datamodel.pipeline_options import PdfPipelineOptions
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from docling.document_converter import DocumentConverter, PdfFormatOption
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from docling_core.types.doc import PictureItem
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# 1. Hardware Monkeypatch for Apple Silicon M3 CPU routing
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torch.backends.mps.is_available = lambda: False
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torch.backends.mps.is_built = lambda: False
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torch.set_default_device("cpu")
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def convert_to_json_and_images(pdf_name: str, output_json_name: str, image_folder_name: str = "extracted_images"):
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source = f"./{pdf_name}"
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output_dir = Path(image_folder_name)
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output_dir.mkdir(exist_ok=True)
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# 2. Configure pipeline to capture images
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pipeline_options = PdfPipelineOptions()
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pipeline_options.images_scale = 2.0 # 2.0 = roughly 144 DPI for crisp extraction
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pipeline_options.generate_picture_images = True # Required to isolate figure items
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# 3. Initialize converter with hardware-isolated options
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converter = DocumentConverter(
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format_options={
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InputFormat.PDF: PdfFormatOption(pipeline_options=pipeline_options)
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}
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)
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print(f"🚀 Processing {pdf_name} and building document schema...")
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result = converter.convert(source)
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# 4. Loop through the document items and save physical picture blocks
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picture_counter = 0
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for element, _level in result.document.iterate_items():
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if isinstance(element, PictureItem):
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picture_counter += 1
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image_path = output_dir / f"figure_{picture_counter}.png"
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# Save the raw image block cleanly using Pillow
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element.get_image(result.document).save(image_path, "PNG")
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print(f"✨ Compilation finished! Serializing to JSON schema...")
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# 5. Export the Document object directly into a standard Python dictionary matrix
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doc_dict = result.document.export_to_dict()
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# Write cleanly structured, indented JSON payload to disk
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with open(output_json_name, "w", encoding="utf-8") as f:
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json.dump(doc_dict, f, ensure_ascii=False, indent=2)
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print(f"✅ Success! Saved {output_json_name} and extracted {picture_counter} figures to ./{image_folder_name}/")
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# Run it for your target wiring rules document
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convert_to_json_and_images(
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"1-AS_NZS_3000_2018_Wiring_Rules_Standards_Australia.pdf",
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"1-AS_NZS_3000_2018_Wiring_Rules_Standards_Australia.json"
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) |