Recently there has been an explosion in the use of digital imaging. Digital images are distributed widely in the Internet world, but they are not protected enough against copying and forging. One way to protect the intellectual property right of the digital contents such as images and music is to embed a watermark into them. In this paper we propose a new watermarking method. This method is robust to cropping because it embeds wavelet coefficients instead of brightness values of the original image. In addition, this takes the human perception property into consideration and so has strong invisibility.
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