A robust and secure DWT-SVD digital image watermarking using encrypted watermark for copyright protection of cheque image

Abstract

Digital watermarking is a process of embedding a data/additional information into exiting data. This additional data/information are used for embedding called as watermark. With this watermark, if the file or data get copied, this is then used to identify the originality of data. As, Digital communication facilitates transfer of digital data such as text, audio, image, video, etc. The un-authorized user can copy this data & can use anywhere they want. However, this creates the problem of security, ownership and copyright protection. To overcome this problem, digital watermarking is used. During transmission of data, there are many attacks occurring either intentionally or non-intentionally on digital watermarked image. These results into degradation of image quality and watermark may get destroyed. To provide security to watermark private key encryption and decryption is used. This encrypted watermark is used further for digital watermarking process using combined DWT-SVD transform. In this Paper, it is going to discuss “A Robust and Secure DWT-SVD Digital Image Watermarking Using Encrypted Watermark for Copyright Protection of Cheque Image.” Digital Watermarking Technique is used to provide ownership & copyright protection for cheque image and private key encryption & decryption technique used for security of bank watermark.