A Survey of Digital Watermarking Techniques, Applications and Attacks

The expansion of the Internet has frequently increased the availability of digital data such as audio, images and videos to the public. Digital watermarking is a technology being developed to ensure and facilitate data authentication, security and copyright protection of digital media. This paper incorporate the detail study watermarking definition, concept and the main contributions in this field such as categories of watermarking process that tell which watermarking method should be used. It starts with overview, classification, features, framework, techniques, application, challenges, limitations and performance metric of watermarking and a comparative analysis of some major watermarking techniques. In the survey our prime concern is image only.