@inproceedings{dadf54b01287404c816554af1aa722cc,
title = "A mask-based enhancement method for historical documents",
abstract = "This paper proposes a novel method for document enhancement. The method is based on the combination of two state-of-the-art filters through the construction of a mask. The mask is applied to a TV (Total Variation) - regularized image where background noise has been reduced. The masked image is then filtered by NLmeans (Non LocalMeans) which reduces the noise in the text areas located by the mask. The document images to be enhanced are real historical documents from several periods which include several defects in their background. These defects result from scanning, paper aging and bleed-through. We observe the improvement of this enhancement method through OCR accuracy.",
keywords = "Character recognition, Document image enhancement, Historical documents, Image processing, Non-local Means, Variational approach",
author = "\{Barney Smith\}, \{Elisa H.\} and J{\'e}r{\^o}me Darbon and Laurence Likforman-Sulem",
year = "2011",
month = may,
day = "12",
doi = "10.1117/12.876668",
language = "English",
isbn = "9780819484116",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Proceedings of SPIE-IS and T Electronic Imaging - Document Recognition and Retrieval XVIII",
note = "Document Recognition and Retrieval XVIII ; Conference date: 26-01-2011 Through 27-01-2011",
}