期刊
SIGNAL PROCESSING-IMAGE COMMUNICATION
卷 45, 期 -, 页码 10-23出版社
ELSEVIER
DOI: 10.1016/j.image.2016.03.007
关键词
Radial Harmonic Fourier Moments; Fast computation; Image watermarking; Geometric attacks
资金
- National Natural Science Foundation of China [61370145, 61173183, 60973152]
- Doctoral Program Foundation of Institution of Higher Education of China [20070141014]
- Program for Liaoning Excellent Talents in University [LR2012003]
- National Natural Science Foundation of Liaoning Province [20082165]
- Fundamental Research Funds for the Central Universities [DUT12JB06]
In order to reduce the time complexity and improve the reconstruction performance of traditional method for Radial Harmonic Fourier Moments (RHFMs), we introduce a fast and precise method by using FFT and based on the which, this paper proposes a novel image watermarking algorithm which is robust to geometric attacks. We firstly compute the RHFMs of the original image by using the proposed method and select the robust RHFMs which are suitable for watermark embedding. Then the watermark is embedded by modifying the magnitudes of RHFMs based on quantization. In the decoder, the watermark can be extracted from the magnitudes of RHFMs directly without using the original image. Simulation results show the proposed algorithm provides an excellent watermark invisibility and can be resilient to geometric attacks and common image processing attacks effectively. (C) 2016 Elsevier B.V. All rights reserved.
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