Improved Robust Watermarking Based on Rational Dither Modulation

CASIA OpenIR > 模式识别实验室

	Improved Robust Watermarking Based on Rational Dither Modulation
	Wang, Zairan; Dong, Jing; Wang, Wei; Tan, Tieniu
	2014
会议名称	Chinese Conference on Image and Graphics Technologies
会议录名称	Chinese Conference on Image and Graphics Technologies
会议日期	2014
会议地点	China
摘要	Rational 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.
关键词	Watermarking Rdm
文献类型	会议论文
条目标识符	http://ir.ia.ac.cn/handle/173211/12309
专题	模式识别实验室
通讯作者	Dong, Jing
推荐引用方式 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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