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Improved Robust Watermarking Based on Rational Dither Modulation
Wang, Zairan; Dong, Jing; Wang, Wei; Tan, Tieniu
2014
Conference NameChinese Conference on Image and Graphics Technologies
Source PublicationChinese Conference on Image and Graphics Technologies
Conference Date2014
Conference PlaceChina
AbstractRational dither modulation (RDM) watermarking was presented to resist amplitude scaling attack. This property is achieved by quantizing the ratio of consecutive samples instead of samples themselves. In this paper, we improve the performance of basic RDM watermarking to resist more types of watermarking attacks. We improve the robustness of our modified RDM watermarking by the following three aspects: 1) The quantization step size is increased by modifying two coefficients instead of only one coefficient in the basic RDM method, 2) Several modification rules are defined to reduce embedding distortion, and 3) The coefficients with larger magnitudes in the lowest sub-band in DWT domain are selected to embed watermark. A variety of attacks are implemented to evaluate the performance of our method. Experimental results demonstrate that our method outperforms the basic RDM method and two state-of-the-art watermarking methods over a wide range of attacks and it also has good imperceptibility.
KeywordWatermarking Rdm
Document Type会议论文
Identifierhttp://ir.ia.ac.cn/handle/173211/12309
Collection智能感知与计算研究中心
Corresponding AuthorDong, Jing
Recommended Citation
GB/T 7714
Wang, Zairan,Dong, Jing,Wang, Wei,et al. Improved Robust Watermarking Based on Rational Dither Modulation[C],2014.
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