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A robust phase watermarking algorithm using conjugate symmetric sequency-ordered complex Hadamard transform

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A robust phase watermarking algorithm using conjugate symmetric sequency-ordered complex Hadamard transform

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dc.contributor.author Aung, Aye
dc.contributor.author Ng, Boon Poh
dc.contributor.author Rahardja, Susanto
dc.date.accessioned 2011-10-11T00:45:03Z
dc.date.available 2011-10-11T00:45:03Z
dc.date.copyright 2010
dc.date.issued 2011-10-11
dc.identifier.citation Aung, A., Ng, B. P. & Rahardja, S. (2010). A Robust Phase Watermarking Algorithm Using Conjugate Symmetric Sequency-ordered Complex Hadamard Transform. 2010 Asia Pacific Signal and Information Processing Annual Summit and Conference, Biopolis, Singapore, pp.153-156.
dc.identifier.uri http://hdl.handle.net/10220/7203
dc.description.abstract This paper presents a novel watermarking algorithm based on a newly developed transform known as conjugate symmetric sequency-ordered complex Hadamard transform (CSSCHT). The algorithm is performed in the sequency domain where the phases of the CS-SCHT coefficients are altered to convey the watermark information using the phase-shift-keying (PSK) modulation. The amplitude boost (AB) method is employed to improve the robustness of the watermarking scheme and the spread spectrum (SS) technique is adopted to increase the security of the watermark against various attacks. The robustness of the proposed scheme is investigated by various types of image attacking operations such as JPEG compression, resizing, cropping and low-pass filtering.
dc.format.extent 4 p.
dc.language.iso en
dc.rights © 2010 APSIPA
dc.subject DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing.
dc.title A robust phase watermarking algorithm using conjugate symmetric sequency-ordered complex Hadamard transform
dc.type Conference Paper
dc.contributor.conference Asia Pacific Signal and Information Processing Annual Summit and Conference (2010)
dc.contributor.research Positioning and Wireless Technology Centre
dc.contributor.school School of Electrical and Electronic Engineering

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