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Phase Watermarking Algorithm using Hybrid Multi-Polarity Hadamard Transform

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Abstract

In this paper, a robust phase watermarking algorithm for still images is presented where the watermark information is conveyed in the phase spectrum in the transform domain. Phase watermarking algorithm that uses multi-polarity Walsh-Hadamard and Complex Hadamard transform is developed. The robustness of presented algorithm is investigated by its uniqueness, JPEG encoding, image resizing, dithering noise distortions, sharpening, cropping and successive watermarking.

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Authors and Affiliations

  1. School of Electrical & Electronic Engineering, Nanyang Technological University, Block S1, 50 Nanyang Avenue,, Singapore, 639798, Singapore

    Bogdan J. Falkowski

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  1. Bogdan J. Falkowski
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Correspondence to Bogdan J. Falkowski.

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Falkowski, B.J. Phase Watermarking Algorithm using Hybrid Multi-Polarity Hadamard Transform. J Math Imaging Vis 30, 13–21 (2008). https://doi.org/10.1007/s10851-007-0043-4

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  • DOI: https://doi.org/10.1007/s10851-007-0043-4

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