A robust digital watermarking in geometric attacks

Kyu-Tae Kim; Jin-Hyug Choi; Soo-Gil Kim; Jong-Uk Choi

doi:10.1117/12.570138

11 January 2005 A robust digital watermarking in geometric attacks

Kyu-Tae Kim, Jin-Hyug Choi, Soo-Gil Kim, Jong-Uk Choi

Proceedings Volume 5642, Information Optics and Photonics Technology; (2005) https://doi.org/10.1117/12.570138
Event: Photonics Asia, 2004, Beijing, China

Abstract

We propose a new watermarking scheme that can be used to embed multiple bits and also resilient to JPEG compression and geometrical transforms such as scaling, rotation, and cropping, based on holographic watermark that allows multiple watermark recovery without original content (cover image). The holographic watermark is that Fourier transformed digital hologram, embedded into cover image in the spatial domain. The proposed method has not only increased robustness with a stronger embedding but also imperceptibility of the watermark in the evaluation process. To compare with the conventional scheme, the spread spectrum, we embedded and recovered maximum 1,024 bits that consist of binary number over PSNR (peak signal-to-noise ratio) 39dB. And also, we computed robustness with BER (bit-error rate) corresponding the above attacks.

Citation Download Citation

Kyu-Tae Kim, Jin-Hyug Choi, Soo-Gil Kim, and Jong-Uk Choi "A robust digital watermarking in geometric attacks", Proc. SPIE 5642, Information Optics and Photonics Technology, (11 January 2005); https://doi.org/10.1117/12.570138

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