A proof of copyright ownership using moment-preserving

A technique for proving copyright ownership of images is proposed. We use the moment-preserving to represent the characteristics of images. The secret key for copyright detection is generated from the image´s feature and the owner´s watermark/trademark. This strategy for a watermarking system is wholly different from traditional work. Furthermore, a voting approach is used to improve the correctness of the computed watermarks. Experimental results show that our method survive can against several attacks. These attacks are from image processing algorithms, such as filtering, lossy compression, rotation and so on. In particular the proposed scheme is not only applicable to ordinary natural images but also to cartoon graphics