Digital watermarking is basically the procedure of engrafting information into a digital signal in such a way which is quite difficult to remove. The techniques of digital watermarking are used for various purposes such as ensuring an authorized access, establishing ownership rights, preventing illegal reapplications, and helping the authentication of content. The watermarks are actually the part of the images that is quite difficult to remove. Currently, the digital watermarking of images is considered to be one of the necessary security technologies that are complementary to the encryption-based ensured transmission as well as copy protection.
The technology of watermarking digital images is applied broadly to majority of the electronic information services, where the protection of security, data, and the rights of intellectual rights are needed. The digital video water marking can be easily gained by the application of still image technology to every film frame or by the usage of dedicated methods. The digital watermarking is quite helpful to setup the controlled audio distribution in addition to provide an efficient way to for copyright protection. The number of applications for the technologies of digital watermarking is increasing day by day. Moreover, the digital watermarking also permits to link information on the documents.
There are much best software used for watermarking images such as adobe photo shop, digimarc.com, PlumAmazing.com, watermarker.com, and winwatermark.com etc. in the same way, there are several options for the literal watermark to use with the photos. Normally, these options include copyright, image and text, which are used for different purposes. The digital watermarking is also very effective in the secure identification of important banknotes and records. In addition, it also helps to add an invisible layer of protection versus the unauthorized reproduction or alteration. With the help of watermark digital technology, DRM or digital right management systems can easily link contents such as video, music, and images outside the DRM.