Presentation introducing OCR general features in relation to IMPACT project presented by Clemens Neudecker during demo session held at the BNE 5th of October 2011.

1. IMPACT OCR in a nutshell Clemens Neudecker, National Library of the Netherlands IMPACT Demo Day, Biblioteca Nacional de España

4. Binarisation

5. Adaptive Binarisation Original scan Prev. binarization New binarization

7. Segmentation Blocks/Regions Words Glyphs

8. IMPACT Segmentation example Pre-Impact FR Engine 9 FR Engine 10 Part of column was misclassified as image

9. IMPACT Segmentation example v. 9 v. 10 Linear word order errors

10. IMPACT Segmentation example v. 9 v. 10 Lost text

11. Fraktur recognition

14. Thank you! Questions?