OCR support for Stache AI document loaders
Project description
stache-ai-ocr
OCR support for Stache AI document loaders.
Provides a high-priority PDF loader that falls back to OCR for scanned documents.
Installation
pip install stache-ai-ocr
apt install ocrmypdf # System dependency required
Usage
Once installed, the OCR loader automatically registers and takes priority over the basic PDF loader for all PDF files.
The loader will:
- First attempt normal text extraction with pdfplumber
- If no text is found (scanned PDF), fall back to OCR using ocrmypdf
- Gracefully handle missing ocrmypdf (logs warning and returns empty text)
System Requirements
- ocrmypdf system binary must be installed
- Ubuntu/Debian:
apt install ocrmypdf - macOS:
brew install ocrmypdf - Includes Tesseract OCR engine
- Ubuntu/Debian:
Priority Override
This loader registers with priority 10, overriding the basic PDF loader (priority 0). This ensures OCR is used when available without affecting systems where it's not installed.
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