Dual Watermarking Technique for Image Authentication using Biometrics

In this online generation of cyberspace, protection of crucial documents is highly significant. To achieve this goal, digital watermarking with biometric features plays an important part. It's the technology which hides secret data into other digital formats. It uses modern technology of hiding information inside some digital media i.e text, image, video, or audio files. The key purpose of this paper is to implement the technique of information hiding inside image using biometric feature. To improve the security, robustness and provide authenticity for the image, a two step watermarking method is demonstrated. To achieve this, Redundant Discrete Wavelet Transform ie. RDWT along with SVD ie. singular value decomposition is preferred. For two step watermarking, major and minor watermarks are used. The process of embedding minor into the major watermark is achieved in all sub bands produced after applying RDWT, thereby resulting in the transformed watermark. The cover image is divided into blocks which are not overlapped by one another for embedding the transformed watermark by changing the singular values to get the resultant watermark. Finally, to obtain the Major and Minor watermarks a reverse algorithm is applied. The efficacy of this method in terms of digital attacks has exhibited good experimental outcomes.