Web dual watermarking technology using an XML document

A novel dual watermark technology based on digital copyright technology is proposed, which, making full use of the advances of the web, stores the correlation information including the keys and the dual watermarks in an XML document. A new image watermarking technology to spread a digital image with copyright protection is realised successfully on the Internet. The arithmetic has very good robustness against the most common, non-malevolent data manipulations, including digital-to-analogue conversion and digital format conversion. Finally, the experimental results confirm that the two watermarks embedded by the proposed algorithm are invisible and robust against commonly used image-processing manipulations such as JPEG compression, adding noise, cropping, and rescaling and soon. The proposed algorithm is shown to provide very good results in term of image imperceptibility too