Hybrid Watermarking Framework Using Discrete Wavelet Transform and Visual Cryptographic Scheme| Chapter 5 | Current Concepts in Engineering Research and Technology Vol. 1

 

The rapid growth of the internet and easy access to multimedia data have increased concerns about unauthorised use and redistribution of digital content. Digital watermarking is a widely used technique for copyright protection and authentication of digital multimedia. Several watermarking techniques have been proposed in the literature, limited research has been conducted on the effective integration of multi-level DWT with visual hiding schemes to achieve both high robustness and perceptual quality simultaneously. This chapter presents a robust copyright protection scheme based on the discrete wavelet transform (DWT) and visual hiding scheme (VHS). Unlike the traditional schemes, in this proposed scheme, the original image was modified by embedding the watermark into the original image. The visual hidden scheme was used to construct a watermarked image. In embedding, 3 level DWT was applied on the cover image and then the embedding of the watermark was performed using the VHS technique after resizing the watermark image. In order to express the robustness and perceptibility of the presented watermark scheme, experimental results show the performance of the proposed scheme based on parameters, peak signal-to-noise ratio and resistance against various signal processing operations and attacks. The proposed scheme shows higher perceptible performance of the watermarked image without an attack environment produces 51.8 dB PSNR and a minimum of 47.7dB for test images. Under an attack environment, the performance degrade not significantly but in under tolerable range of 30 dB to       42 dB. In future work, the fractional transforms can be more suitably used to increase system robustness in the same direction.

 

 

Author(s) Details

Deepak Sharma
Department of Electronics and Communication Engineering, Jaypee University of Engineering and Technology, Guna, (M.P.), India.

 

Bali Ram Gupta
Department of Mathematics, Jaypee University of Engineering and Technology, Guna, (M.P.), India.

 

Shefali Sharma
Department of Electronics and Communication Engineering, Jaypee University of Engineering and Technology, Guna, (M.P.), India.

 

Please see the book here :- https://doi.org/10.9734/bpi/ccert/v1/6977

Assessment of Copyright Protection Using Watermarking and Cryptography for Online Text Information | Chapter 13 | New Visions in Science and Technology Vol. 9

 

Information and security are two factors that are interdependent. To reach its relevance, information security has evolved into a global issue that necessitates a variety of tools, regulations, and assurance of technologies against any relevant security concerns. Thousands of writers are being drawn to the internet flood, which offers a flexible means of disseminating online content at a low cost. Because text is such an important component of online information sharing, there is a high need for text and web copyright protection. In this work, a variety of visible watermarking approaches are investigated for text documents, but only a handful for web-based content. The goal of this research is to underline the importance of using watermarking and cryptography approaches to protect online text data that is exposed to a range of threats.

Author(S) Details

B. N. Lakshmi
Department of CSE, BMS Institute of Technology and Management Bangalore-560064, India.

N. Ashwini
Department of CSE, BMS Institute of Technology and Management Bangalore-560064, India.

Aditya Abrol
Department of CSE, BMS Institute of Technology and Management Bangalore-560064, India.

View Book:- https://stm.bookpi.org/NVST-V9/article/view/4792