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With the rapid development of information technology and multimedia, the useof digital data is increasing day by day. So it becomes very essential toprotect multimedia information from piracy and also it is challenging. A greatdeal of Copyright owners is worried about protecting any kind of illegalrepetition of their information. Hence, facing all these kinds of problemsdevelopment of the techniques is very important. Digital watermarkingconsidered as a solution to prevent the multimedia data. In this paper, an ideaof watermarking is proposed and implemented. In proposed watermarking method,the original image is rearranged using zigzag sequence and DWT is applied onrearranged image. Then DCT and SVD are applied on all high bands LH, HL and HH.Watermark is then embedded by modifying the singular values of these bands.Extraction of watermark is performed by the inversion of watermark embeddingprocess. For choosing of these three bands it gives facility of mid-band andpure high band that ensures good imperceptibility and more robustness againstdifferent kinds of attacks.

A dwt, dct and svd based watermarking technique to protect the image piracy