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feat(ocr): add self-hosted OCR engine support (Tesseract, EasyOCR) with multi-provider cross-checking

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Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
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copilot-swe-agent[bot]
2026-02-23 20:59:43 +00:00
parent 9bba1f025f
commit 1f843fe460
7 changed files with 892 additions and 9 deletions
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app/config.py
+34
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@@ -72,6 +72,40 @@ class Settings(BaseSettings):
azure_region: str
azure_endpoint: str
gotenberg_url: str
# ---------------------------------------------------------------------------
# OCR provider settings
# ---------------------------------------------------------------------------
# Comma-separated list of OCR engines to use.
# Supported values: azure, tesseract, easyocr, mistral, google_docai, aws_textract
# When multiple engines are listed all are run and results are merged.
# Example: OCR_PROVIDERS=azure,tesseract
ocr_providers: str = "azure"
# Strategy for merging results from multiple OCR providers.
# - ai_merge : Ask the AI model to produce the best merged text (default).
# - longest : Return the result with the most characters.
# - primary : Return only the first provider's result (no merging).
ocr_merge_strategy: str = "ai_merge"
# Tesseract OCR settings (used when "tesseract" is in OCR_PROVIDERS)
tesseract_cmd: Optional[str] = None # Path to tesseract binary (e.g. /usr/bin/tesseract)
tesseract_language: str = "eng" # Tesseract language code(s), e.g. "eng" or "eng+deu"
# EasyOCR settings (used when "easyocr" is in OCR_PROVIDERS)
easyocr_languages: str = "en" # Comma-separated language codes, e.g. "en,de,fr"
easyocr_gpu: bool = False # Enable GPU acceleration for EasyOCR
# Mistral OCR settings (used when "mistral" is in OCR_PROVIDERS)
mistral_api_key: Optional[str] = None
mistral_ocr_model: str = "mistral-ocr-latest"
# Google Cloud Document AI settings (used when "google_docai" is in OCR_PROVIDERS)
# Falls back to google_drive_credentials_json for service account credentials.
google_docai_credentials_json: Optional[str] = None
google_docai_project_id: Optional[str] = None
google_docai_processor_id: Optional[str] = None
google_docai_location: str = "us" # Processor location, e.g. "us" or "eu"
external_hostname: str = "localhost" # Default to localhost
# Authentication settings