Classify Watermark Notification For Free

A watermarking system is usually divided into three distinct steps, embedding, attack, and detection. In embedding, an algorithm accepts the host and the data to be embedded, and produces a watermarked signal. Then the watermarked digital signal is transmitted or stored, usually transmitted to another person.

Watermarks are often used commercially to identify the manufacturer or the grade of paper. They have also been used to detect and prevent counterfeiting and forgery. The notion of watermarks as a means of identification was carried beyond the printing press into the computer age.

Asset Protection - Watermarks are used to protect images and visual files from being stolen and used or altered without the owner's permission.

Generally, watermarking techniques is classified based on different embedding domain of the watermark into two classes, spatial and transform domain or the frequency domain.

The basic characteristics of digital watermark are imperceptibility, capacity, robustness and false positive of watermarking algorithm and security of the hiding place.

Visible Watermarks ? These watermarks are visible. Invisible Watermarks ? These watermarks are embedded in the media and use steganography technique. They are not visible by naked eyes. Public Watermarks ? These can be understood and modified by anyone using certain algorithms.

Digital watermarking is a technology in which identification information is embedded into the data carrier in ways that cannot be easily noticed, and in which the data usage will not be affected. This technology often protects copyright of multimedia data, and protects databases and text files.

There are two types of digital watermarking, visible and invisible.

In watermarking techniques, a symbol of owner authenticity (watermark) is embedded into the host signal and, later, this watermark data can be extracted. The watermark data, which may be visible or invisible, can contain a single bit, a set of binary data, or a number of samples in the host signal [5].

Watermarking can help provide authenticity, spread your brand, and protect your work. In fact, section 1202 of the U.S. Copyright Act makes it illegal to remove watermarks from original property, and perpetrators could receive heavy fines if found in violation.