A spread spectrum based scalable blind digital watermarking technique for multi-purpose multimedia applications

The advent of digital media and availability of modern technology/contemporary techniques has not only helped content creators but also raised serious security concerns about acts of illicit copying and manipulation, which breach rightful ownership, due to the possibility of exact replication of multimedia contents and their swift distribution through open networks. Modern digital watermarking techniques provide an answer to this problem. A novel, scaleable and improved transform domain blind digital watermarking technique is proposed that can be utilized for multi-purpose multimedia applications. The system, designed to generate highly random watermarks, ensures imperceptibility and difficult unauthorized detection. Furthermore, considerations of psycho-visual and domain specific redundancies improve the data payload and prove robustness claims against various attacks.