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IMPACT OCR in a nutshell Clemens Neudecker, National Library of the Netherlands IMPACT Demo Day, British Library 12/11/11
OCR Process ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
ABBYY FineReader ,[object Object],[object Object],[object Object]
Binarisation
Adaptive Binarisation Original scan Prev.  binarization New  binarization
IMPACT Binarisation ,[object Object],[object Object],[object Object]
Segmentation Blocks/Regions Words   Glyphs
IMPACT Segmentation example Pre-Impact FR Engine 9 FR Engine 10 Part of column was misclassified as image
IMPACT Segmentation example v. 9 v. 10 Linear word order errors
IMPACT Segmentation example v. 9 v. 10 Lost text
Recognition
Languages and Dictionaries ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
ALTO: New native export format ,[object Object],[object Object],[object Object]
Thank you! Questions?

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BL Demo Day - July2011 - (4) OCR for IMPACT Part 1