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

TL;DR

This paper introduces a digital image watermarking technique combining DWT, DCT, and SVD on rearranged images to enhance protection against piracy, ensuring robustness and imperceptibility.

Contribution

It proposes a novel watermarking method using zigzag rearrangement, DWT, DCT, and SVD, improving robustness and imperceptibility over existing techniques.

Findings

Watermark remains robust against various attacks.

The method achieves high imperceptibility.

Effective embedding in mid and high frequency bands.

Abstract

With the rapid development of information technology and multimedia, the use of digital data is increasing day by day. So it becomes very essential to protect multimedia information from piracy and also it is challenging. A great deal of Copyright owners is worried about protecting any kind of illegal repetition of their information. Hence, facing all these kinds of problems development of the techniques is very important. Digital watermarking considered as a solution to prevent the multimedia data. In this paper, an idea of watermarking is proposed and implemented. In proposed watermarking method, the original image is rearranged using zigzag sequence and DWT is applied on rearranged 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 embedding process. For choosing of these three bands it gives facility of mid-band and pure high band that ensures good imperceptibility and more robustness against different kinds of attacks.