Abstract:

Digital watermarking can provide copyright protection and authentication to the owners or users of multimedia. The two major popular algorithms are in the space domain and transform domain. In order to further improve the robustness of the image watermarking algorithms, a 2-dimensional cepstrum transform is introduced in image watermarking algorithms and a novel image watermarking scheme in the cepstrum domain is proposed in this paper. A pseudo random sequence is used as the watermark and is embedded into the host image in its 2-dimensional cepstrum domain. The embedded watermark can be detected without the original image. Extensive computer simulation results show that the proposed algorithm meets the imperceptibness and is robust to a few kinds of watermarking attack, such as JPEG compression, additive and multiplicative noise, filtering and some other image processing operations.

Key words: cepstrum, digital watermarking, spread spectrum