Dual Watermarking Scheme with Encryption

TL;DR

This paper proposes a dual watermarking scheme combining DWT, SVD, and chaos encryption to enhance the robustness, security, and protection of digital images during transmission.

Contribution

It introduces a novel dual watermarking approach with chaos-based encryption, embedding two watermarks and enabling secure, robust image authentication and copyright protection.

Findings

Enhanced robustness against image distortions

Improved security through chaos encryption

Effective extraction of watermarks from distorted images

Abstract

Digital Watermarking is used for copyright protection and authentication. In the proposed system, a Dual Watermarking Scheme based on DWT SVD with chaos encryption algorithm, will be developed to improve the robustness and protection along with security. DWT and SVD have been used as a mathematical tool to embed watermark in the image. Two watermarks are embedded in the host image. The secondary is embedded into primary watermark and the resultant watermarked image is encrypted using chaos based logistic map. This provides an efficient and secure way for image encryption and transmission. The watermarked image is decrypted and a reliable watermark extraction scheme is developed for the extraction of the primary as well as secondary watermark from the distorted image.