Repository containing unpaper build for Windows users.
Perspective correction and image alignment tool for OCR/AI preprocessing. Straighten skewed documents. Pure HTML/JS.
Preflight checks for document extraction pipelines — validate, render, and screen PDFs before they reach your LLM. Pure-Python wheel, in-memory only.
OpenCV-based document scanner with perspective correction, adaptive binarization, de-shadowing, batch processing and scan quality assessment.
Flip a page, get a scan — automatic capture for document cameras, with scan enhancement. 高拍仪翻页自动拍照与扫描增强
Pre-OCR Image Normalization — perspective correction, deskew, denoise for medical scans
Convert multi-page PDFs into clean, OCR-ready images... CLI, watch folder, web UI, and optional Google Drive sync.
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