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Title: A robust phase watermarking algorithm using conjugate symmetric sequency-ordered complex Hadamard transform
Authors: Aung, Aye
Ng, Boon Poh
Rahardja, Susanto
Keywords: DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing
Issue Date: 2010
Source: 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.
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.
Rights: © 2010 APSIPA. This paper was published in Proceedings of the Second APSIPA Annual Summit and Conference and is made available as an electronic reprint (preprint) with permission of APSIPA. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Conference Papers

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