Improved watermark extraction for printed and scanned watermarked document

Conference proceedings article

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Publication Details

Author list: Thongkor K., Amornraksa T.

Publisher: Hindawi

Publication year: 2011

ISBN: 9781457721663

ISSN: 0146-9428

eISSN: 1745-4557

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857263738&doi=10.1109%2fISPACS.2011.6146097&partnerID=40&md5=a7125bbd4ab844ed4565948c25449d57

Languages: English-Great Britain (EN-GB)

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Abstract

In this paper, we address a problem in the watermark extraction process from the printed and scanned watermarked document. Because the information e.g. text, images, diagrams, etc., printed on the watermarked ready-to-print paper can be considered as noises introduced to the watermarked document, the accuracy of watermark signal extracted from the watermarked document can be improved by removing such noises as much as possible before performing the watermark extraction process. From this fact, we thus propose a new procedure to improve the accuracy of the extracted watermark. Our proposed procedure is efficient and very practical to implement with the existing watermarking scheme. The experimental results show improvements obtained from our proposed procedure. ฉ 2011 IEEE.

Keywords

printed and scanned watermarked document