Optical Character Recognition -- typically the art of teaching a computer to read printed text (provided as scanned images).

[...]

Three principal open-source engines:

• GOCR (appears to have a Tcl/Tk frontend)
• Ocrad (GNU)
• Tesseract OCR (originally Hewlett-Packard, but now released as open source)

Recommended proprietary packages:

• Vividata OCR Shop XTR Lite
• VueScan

Examples:

• Tcl does OCR with TWAPI and Microsoft Office

---

OCRchie: Modular Optical Character Recognition Software in C++ with Tcl/Tk interface.

---