Invisible watermarking using a novel MRA-based image fusion method

In today´s technical era, transmission of digital data plays a key role in our everyday lives; it is only natural that the protection of data integrity and confidentiality has assumed paramount proportions. To avoid interception and misuse, an efficient and reliable data hiding technique has to be developed and deployed in almost every sphere of electronic data management. For this purpose, the concept of watermarking has always been used widely. In this paper we have presented a novel technique based on wavelet transforms and image fusion and proposed a new algorithm for robust and effective watermarking. In this algorithm, we have used the Multi-Resolution Analysis (MRA) technique to decompose an image and then fusing it with a logo image rather than a pseudo-random number sequence. The algorithm has been applied on multiple images and results have proved its effectiveness.