Bouaziz-aitd/Kab_Taqbaylit_Tesseract_OCR

Tesseract OCR model for Taqbaylit Kabyle language with support for special characters (ɣ, ɛ, ḍ, ṭ, ḥ, ṛ, ṣ, ẓ, ǧ, č). # Kabyle (Taqbaylit) Tesseract OCR Model By Bouaziz Ait Driss ## Overview Tesseract OCR model for Taqbaylit Kabyle language with support for special characters (ɣ, ɛ, ḍ, ṭ, ḥ, ṛ, ṣ, ẓ, ǧ, č). ## Starting Training Details - Base model: eng (English) - Training data: ~5,000 files - Wordlist: 5,000+ Kabyle words - Iteration count: ~10,000 ## Starting Performance Performance using python dedicated script test_cer.py - Character Error Rate (CER): 30.56% - Word Error Rate (WER): 72.94% - Tested on average quality scanned documents ## Fine Tuning Training details - Base model: kab (kabyle) - Training data: 5,554 files - Wordlist: 29,840 Kabyle words - Iteration count: ~26,000 ## Optimal Performance from Fine Tuning Tesseract ended at checkpoint with BCER: 2.9% at iteration #26000 Performance using python dedicated script test_cer.py - Character Error Rate (CER): 5.08% - Word Error Rate (WER): 15.28% - Tested on average quality scanned documents ## Installation ```bash # Copy to Tesseract tessdata directory sudo cp kab.traineddata /usr/share/tesseract-ocr/4.00/tessdata/ # Or for local user cp kab.traineddata ~/.local/share/tessdata/ ``` ## Usage ```bash tesseract input.png output -l kab ``` Note that the use in conda environment pytesseract is calling the model from conda environment (tessdatada) where Tesseract is installed and not from the Tesseract installed under windows. ## Data Quality Guidelines - **Good quality scans** (300+ DPI, clear text): ~98% accuracy - **Average quality scans** (150-300 DPI): ~84% word accuracy - **Poor quality scans** (<150 DPI, skewed, faded): May require manual review ## Preprocessing Recommendations - Deskew images - Normalize lighting - Use document or grayscale - Minimum 150 DPI resolution ## License [Apache 2.0] ## Citation If you use this model, please cite: [Bouaziz Ait Driss. (2025). *[Kabyle (Taqbaylit) Tesseract OCR model]* [OCR-model]. github.com] ## Known Limitations - …