Mobile Watermarking against Geometrical Distortions

Zhang, Jing and Zhi, Meili and Su, Yuting and Liu, Qingzhong (2015) Mobile Watermarking against Geometrical Distortions. EAI Endorsed Transactions on Security and Safety, 2 (5). e2. ISSN 2032-9393

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Mobile watermarking robust to geometrical distortions is still a great challenge. In mobile watermarking, efficient computation is necessary because mobile devices have very limited resources due to power consumption. In this paper, we propose a low-complexity geometrically resilient watermarking approach based on the optimal tradeoff circular harmonic function (OTCHF) correlation filter and the minimum average correlation energy Mellin radial harmonic (MACE-MRH) correlation filter. By the rotation, translation and scale tolerance properties of the two kinds of filter, the proposed watermark detector can be robust to geometrical attacks. The embedded watermark is weighted by a perceptual mask which matches very well with the properties of the human visual system. Before correlation, a whitening process is utilized to improve watermark detection reliability. Experimental results demonstrate that the proposed watermarking approach is computationally efficient and robust to geometrical distortions.

Item Type: Article
Uncontrolled Keywords: geometrical distortion; mobile watermarking; otchf correlation filter; mace-mrh correlation filter; perceptual mask; whitening
Subjects: H Social Sciences > H Social Sciences (General)
Q Science > QA Mathematics > QA75 Electronic computers. Computer science
QA75 Electronic computers. Computer science
Depositing User: EAI Editor IV
Date Deposited: 26 Mar 2021 13:50
Last Modified: 26 Mar 2021 13:50

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