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Would you like an annotated example workflow for a specific document type (e.g., invoice, scientific paper, historical letter)?
| Tool | When to use | |------|--------------| | | Slightly rotated scans (<5°) | | Straighten image | Heavily rotated pages | | Split facing pages | Book scans showing two pages | | Crop | Remove black borders or page edges | | Remove holes | Punch holes causing false characters | | Background removal | Textured or colored paper | | Invert | White text on dark background | | Resolution | Ideal: 300–600 DPI; below 200 DPI = poor OCR | abbyy finereader 14