A Review on Watermarking & Image Encoding

Today, exchange of information is been held electronically. Digital data can be stored efficiently with a very high quality and it can be manipulated very easily using computers. Digital media offer several distinct advantages over analog media. Therefore, we have great need of secure transmission of the concerned data. Watermarking is used as a key solution to make the data transferring secure from illegal interferences. A watermark is a secondary image, which is overlaid on the host image, and provides a means of protecting the image. Watermark techniques are used in various areas such as copyright protection, broadcast monitoring and owner identification. Continuous efforts are being made to device an efficient watermarking scheme and this paper conducts a literature survey of watermarking. It describes the early work carried out on digital watermarks, including the brief analysis of various watermarking schemes and its potential