Digital watermarking techniques for security applications

Nowadays, the success of internet technology, made our life very much easy and convenient. But the major problem is to secure the data from duplication and unauthorized use. So the digital watermarking is used. With this technology, we embed the secret information into the actual information for protecting it from unauthorized use. By using this technique only authorized user can access the data. It may be classified into two domains that are spatial domain and frequency domain. In this paper, we have briefly discussed about these technologies and their pros and cons.

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