Watermarking algorithm based on Her transform

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	Watermarking algorithm based on Her transform
	Wang, Li-Peng 1,2
刊名	Chongqing Daxue Xuebao/Journal of Chongqing University
	2012-02-01
卷号	35 期号:2 页码:143-148
关键词	Algorithms Digital watermarking Discrete cosine transforms Matrix algebra Walsh transforms Continuous functions Her transforms Orthogonal transformations Perceptual transparency Robustness against noise Transformation domain Watermarking algorithms Watermarking extraction
ISSN号	1000582X
英文摘要	Most transformations used for digital watermarking in transformation domain are orthogonal transformations, such as DCT and DWT. Three types of orthogonal transformation with excellent performance are found by studying three systems of orthogonal functions: Haar function system, Haar type function system and Walsh function system. Her transformation is one of the three transformations. Her function system can not be used directly in digital watermarking as DCT matrix being used, since Her matrix of Her function system is not normalized orthogonal matrix. The corresponding discrete matrix is obtained by sampling Her continuous functions, and successfully used in digital watermarking with a series of experiments and theoretical analysis. A digital watermarking algorithm based on Her transformation is proposed. Experimental results show that the algorithm is simple and good at perceptual transparency as well as robustness of watermarking extraction. In addition, the experimental results of comparing with the traditional DCT watermarking show that this algorithm is of good robustness against noise and filtering.
语种	中文
出版者	Chongqing University
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/111421]
专题	兰州理工大学
作者单位	1.College of Electrical and Information Engineering, Langzhou University of Technology, Lanzhou 730050, Gansu, China 2.Chongqing Traffic Management Bureau, Chongqing 400054, China;
推荐引用方式 GB/T 7714	Wang, Li-Peng. Watermarking algorithm based on Her transform[J]. Chongqing Daxue Xuebao/Journal of Chongqing University,2012,35(2):143-148.
APA	Wang, Li-Peng.(2012).Watermarking algorithm based on Her transform.Chongqing Daxue Xuebao/Journal of Chongqing University,35(2),143-148.
MLA	Wang, Li-Peng."Watermarking algorithm based on Her transform".Chongqing Daxue Xuebao/Journal of Chongqing University 35.2(2012):143-148.