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3be2fb581f
* feat: Introduce automatic language detection in tesseract_ocr_cli model. Extend unit tests. Signed-off-by: Nikos Livathinos <nli@zurich.ibm.com> * docs: Add example how to use "auto" language with tesseract OCR engines Signed-off-by: Nikos Livathinos <nli@zurich.ibm.com> * fix: Refactor the TesseractOcrModel and TesseractOcrCliModel to validate if the auto-detected language is installed in the system and if not fall back to a default option without language. Signed-off-by: Nikos Livathinos <nli@zurich.ibm.com> --------- Signed-off-by: Nikos Livathinos <nli@zurich.ibm.com>
97 lines
2.9 KiB
Python
97 lines
2.9 KiB
Python
import sys
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from pathlib import Path
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from typing import List
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from docling.backend.docling_parse_backend import DoclingParseDocumentBackend
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from docling.datamodel.base_models import InputFormat
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from docling.datamodel.document import ConversionResult
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from docling.datamodel.pipeline_options import (
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EasyOcrOptions,
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OcrMacOptions,
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OcrOptions,
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PdfPipelineOptions,
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RapidOcrOptions,
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TesseractCliOcrOptions,
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TesseractOcrOptions,
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)
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from docling.document_converter import DocumentConverter, PdfFormatOption
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from .verify_utils import verify_conversion_result_v1, verify_conversion_result_v2
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GENERATE_V1 = False
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GENERATE_V2 = False
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def get_pdf_paths():
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# Define the directory you want to search
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directory = Path("./tests/data_scanned")
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# List all PDF files in the directory and its subdirectories
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pdf_files = sorted(directory.rglob("*.pdf"))
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return pdf_files
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def get_converter(ocr_options: OcrOptions):
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pipeline_options = PdfPipelineOptions()
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pipeline_options.do_ocr = True
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pipeline_options.do_table_structure = True
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pipeline_options.table_structure_options.do_cell_matching = True
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pipeline_options.ocr_options = ocr_options
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converter = DocumentConverter(
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format_options={
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InputFormat.PDF: PdfFormatOption(
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pipeline_options=pipeline_options,
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backend=DoclingParseDocumentBackend,
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)
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}
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)
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return converter
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def test_e2e_conversions():
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pdf_paths = get_pdf_paths()
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engines: List[OcrOptions] = [
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EasyOcrOptions(),
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TesseractOcrOptions(),
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TesseractCliOcrOptions(),
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RapidOcrOptions(),
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EasyOcrOptions(force_full_page_ocr=True),
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TesseractOcrOptions(force_full_page_ocr=True),
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TesseractOcrOptions(force_full_page_ocr=True, lang=["auto"]),
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TesseractCliOcrOptions(force_full_page_ocr=True),
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TesseractCliOcrOptions(force_full_page_ocr=True, lang=["auto"]),
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RapidOcrOptions(force_full_page_ocr=True),
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]
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# only works on mac
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if "darwin" == sys.platform:
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engines.append(OcrMacOptions())
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engines.append(OcrMacOptions(force_full_page_ocr=True))
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for ocr_options in engines:
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print(
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f"Converting with ocr_engine: {ocr_options.kind}, language: {ocr_options.lang}"
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)
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converter = get_converter(ocr_options=ocr_options)
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for pdf_path in pdf_paths:
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print(f"converting {pdf_path}")
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doc_result: ConversionResult = converter.convert(pdf_path)
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verify_conversion_result_v1(
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input_path=pdf_path,
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doc_result=doc_result,
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generate=GENERATE_V1,
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fuzzy=True,
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)
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verify_conversion_result_v2(
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input_path=pdf_path,
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doc_result=doc_result,
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generate=GENERATE_V2,
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fuzzy=True,
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)
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