Comparative Analysis of Different Digital Image Watermarking Techniques

The current rapid development and deployment of new IT technologies for the fast provision of commercial multimedia services has resulted in a strong demand for reliable and secure copyright protection techniques for multimedia data. Due to the exponential growth of digital media in recent years, watermarking has found its importance in almost every aspect of digital form. Digital Watermarking is a technique that proffers a means to guard digital data from illegal copying and manipulation. The procedure of embedding data into a digital element like image, audio or video is referred to as watermarking. It is possible to recover this embedded data at a later stage. A digital watermark is an unnoticeable signal added to digital data, known as cover work, which can possibly be identified at a later stage for buyer/seller identification, ownership proof, and the like.