A fast algorithm to binarize and filter documents with back-to-front interference

Authors:
João Marcelo Monte da Silva;Rafael Dueire Lins
Affiliations:
DES -- CTG -- UFPE, Recife, PE Brazil;DES -- CTG -- UFPE, Recife, PE BRAZIL
Venue:
Proceedings of the 2007 ACM symposium on Applied computing
Year:
2007

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Abstract

Whenever one finds documents written on both sides on translucent paper there is a "back-to-front interference". The direct binarization of such documents yields unreadable documents. This paper presents a fast segmentation-based method for generating high-quality binarized images of documents with back-to-front interference. The proposed segmentation algorithm is based on the entropy of the histogram of the image.