Hardware Implementation of a Visual Image Watermarking Scheme Using Qubit/Quantum Computation Through Reversible Methodology

Digital Watermarking

Watermarking is the process of inserting a mark into a multimedia object to make an assertion on the owner or the originality of the object. The use of watermark is an old age art. It began after a little time span of invention of paper manufacturing procedure. At that time, to manufacture paper, a semi liquid mixture of fiber and water is poured in a frame of mesh and distributed throughout the frame to give a proper shape and finally by applying pressure leaving off the water the fiber is cohered. In the wet fiber a picture or text can be impressed from a negative and it left a permanent mark on the paper – fibers when the fibers compressed and dried. As by water vaporization the mark is manufactured, it is called ‘watermark’, Mohanty, S.P. (1999).

In another discussion, it is noted that the watermarking mechanism was first invented about 700 years ago in Fabriano Itally, Kutter M. (1999). In this mechanism to label an article in an invincible manner a portion of the article was made slightly thin. The thinner location of the particular article could be perceived by looking at it when it is held against a strong light source. As the thinner portion looked like watery area on the article, it was called watermark.