Document Protection Based on CHT Coefficients’ Phase Modulation

Draganov, Ivo R. and Kountchev, Roumen K. (2009) Document Protection Based on CHT Coefficients’ Phase Modulation. In: "International Scientific Conference on Information, Communication and Energy Systems and Technologies ICEST" (25-27 June 2009) hosted in Veliko Tarnovo, Bulgaria, 25-27 June 2009, Veliko Tarnovo, Bulgaria.


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In this paper we present a robust and efficient algorithm for document protection based on digital watermarking in phase domain using all complex coefficients of the two dimensional complex Hadamard transform (2D-CHT). High quality reconstruction and low visibility for the watermark is provided. Also broaden information capacity is guaranteed - up to ¾ of the number of pixels for the original image in bits. Detecting the watermark can be done only on the basis of a simple private/public key.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: digital watermarking, document protection, complex Hadamard transform, phase modulation
Subjects: Scientific Fields (Frascati) > Engineering and Technology > Electrical engineering, electronic engineering,information engineering
Divisions: Faculty of Technical Sciences
Depositing User: ICEST
Date Deposited: 18 Mar 2020 17:14
Last Modified: 18 Mar 2020 17:14

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