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PDF digital watermarking: Grayscale photocopy detection of printed documents


Md Salleh, Norhaziah and Soong, Hoong Cheng (2009) PDF digital watermarking: Grayscale photocopy detection of printed documents. In: International Conference on Computing and Informatics 2009 (ICOCI09), 24-25 June 2009, Legend Hotel, Kuala Lumpur.

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Abstract

Digital watermarking is the technique used to provide additional and useful evidences for many application fields especially in copyright infringement detection.The focus of this paper is on Portable Document Format (PDF) watermarking and the printed watermarked copies.Digital watermarking is indeed suitable to detect unauthorized copies from any authentic sources. Colour theory and colour properties are studied on how to prevent yellow-watermarked stamps being photocopied in grayscale, particularly by using luminance concept on the documents.Please note that the technique applies only for grayscale photocopies, as the detection for coloured copies requires disparity techniques for the coloured detection.

Item Type: Conference or Workshop Item (Paper)
Additional Information: ISBN 978-983--44150-2-0 Organized by: UUM College of Arts and Sciences, Universiti Utara Malaysia.
Uncontrolled Keywords: Digital Watermarking, Grayscale, Document Management System, Luminance, Relative Luminance, PDF Watermarking
Subjects: Q Science > QA Mathematics > QA76 Computer software
Divisions: College of Arts and Sciences
Depositing User: Mrs. Norazmilah Yaakub
Date Deposited: 02 Apr 2015 07:41
Last Modified: 02 Apr 2015 07:41
URI: http://repo.uum.edu.my/id/eprint/13563

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