A dewarping algorithm to compensate volume binding distortion in scanned documents

Authors:
Rafael D. Lins;Daniel M. Oliveira;Gabriel Torreão;Jian Fan;Marcelo Thielo
Affiliations:
UFPE, Recife, Brazil;UFPE, Recife, Brazil;UFPE, Recife, Brazil;HP Labs., Palo Alto;HP Brazil R&D, Porto Alegre, Brazil
Venue:
Proceedings of the 2010 ACM Symposium on Applied Computing
Year:
2010

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Abstract

This paper presents a new algorithm for dewarping the volume binding distortion often found whenever one scans a book. The existing algorithms in the literature need scanner parameters, seldom known by the end user. The algorithm proposed here only needs the user to print a calibration grid and to scan it in the central page of a volume. The algorithm collects all the data needed to dewarp all pages in the volume.