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Digital Watermarking on Image
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Digital watermarking is the process of possibly irreversibly embedding information into a digital signal. The signal may be audio, pictures or video, for example. If the signal is copied, then the information is also carried in the copy,An important application of invisible watermarking is to copyright protection systems, which are intended to prevent or deter unauthorized copying of digital media

In this proposed algorithm, according to the size of the image we have to multiply the hadamard coefficient(Hn).In future we may use an algorithm which provides the same formula for embedding different sizes of water mark image to different sizes of original image
We may also extend this trend to the other media like video, audio formats.
In future to prevent copying or distribution Digital watermarking alone is not a complete solution for access/copy control or copyright protection.
The experimental results show that the proposed method is robust against approximately 70% of attacks.

For sure when compared with previous, it is found to be more robust against various attacks. It also refers significant advantage in terms of shorter processing time and the ease of hardware implementation than many common transform techniques.

Hardware Requirements:
Processor :Pentium4
RAM :128MB
Hard disk :4.2GB
Software Requirements:
Operating system :Windows98
Tool :JDK1.6

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