Handwriting Input Recognition

December 12, 2018 · View on GitHub

Handwriting Input Recognition is a Swift app that allows the user to draw characters from a specified language and present the character in a text field. Character recognition is based on Tesseract OCR.

Compilation

  1. Launch Handwriting Input Recognition.xcodeproj
  2. Add your signing certificate under the Target Handwriting Input Recognition → General → Signing
  3. Build

Usage

  1. Draw character in bottom canvas
  2. Press Enter to start OCR or Escape to clear canvas
  3. Choose the character that best matches your intended input above the canvas
  4. Continue to draw if results don't match and press Enter to perform OCR again
  5. Hold down C to copy the results in the text field to clipboard
  6. Hold down Escape to reset the app

TODO

  1. Dynamically update possible character options as user draws
  2. Multiple character input + recognition
  3. Overlays for function running (Copied, Cleared etc)
  4. Add more languages
  5. Specify language (Currently recognition language is set to Japanese)
  6. Improve UI

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Libraries Used

  • Tesseract (v3.05.01)
  • Leptonica (v1.75.3)
    • LibPNG (v1.6.34)
    • LibTIFF (v4.0.9)
    • LibJPEG (v9c)
    • LibZ (v1.2.11)

License

MIT