文章基本信息

标题：Performance Comparison of Hybrid Wavelet Transforms Formed Using Dct, Walsh, Haar and DKT in Watermarking
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作者：H.B.Kekre ; Tanuja Sarode ; Shachi Natu 等
期刊名称：International Journal of Computer Science & Information Technology (IJCSIT)
印刷版ISSN：0975-4660
电子版ISSN：0975-3826
出版年度：2015
卷号：7
期号：1
页码：41
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：In this paper a watermarking method using hybrid wavelet transform and SVD is proposed. Hybrid wavelettransform generated from two different orthogonal transforms is applied on host and SVD is applied towatermark. The transforms used for hybrid wavelet transform generation are DCT, Walsh, Haar and DKT.First component transform used in generation of hybrid wavelet transform corresponds to globalproperties and second component transform corresponds to local properties of an image to whichtransform are applied. Aim of proposed watermarking method is to study effect of selecting DCT asglobal/local component transform on robustness. After testing the proposed method against variousattacks, using DCT as global component is observed to be robust against compression, resizing usingtransforms, resizing using grid based interpolation and noise addition attacks. DCT when used as localcomponent is observed to be robust against cropping. It also shows robustness against resizing usingtransforms, resizing using grid based interpolation and noise addition attacks.
关键词：Watermarking; Hybrid Wavelet Transform; Singular Value Decomposition; Discrete Kekre Transform