With onset of the World Wide Web, authors of digital media can easily distribute their works by making them available on Web pages or other public forums. Anyone having access to those forums can copy the author's media. By the nature of digital media, a copy is an exact, perfect duplicate of the original.
This brings to front a potential problem. How do authors claim ownership rights of such digital media if multiple persons have exact copies? One method is to embed additional information and only distribute the media that contains this additional information.
The embedded information is known as a watermark can provide, for example, information about the media, the author, copyright, or license information.
In this paper, we propose a new method to embed invisible watermarking in a digital images, using Discrete Wavelet Transform (DWT) and the way to extract the watermark data. The advantage of our method is the robustness against several attacks and compression. In addition to the effects of host image and watermark.
Al-Baath University Journal.
2011.
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