基于局部线性嵌入的数字水印

Digital watermarking based on locally linear embedding

提出了一种基于局部线性嵌入(LLE)的水印算法,它对仿射变换具有鲁棒性。该算法通过LLE内在的稳健性改善了鲁棒性。随机产生的水印被嵌入到局部线性嵌入的重建权的系数中。在提取水印时,水印几乎可以用像嵌入时一样的过程来提取。实验结果表明,该水印方案对仿射变换的鲁棒性较好。

In this paper, a watermarking algorithm based on Locally Linear Embedding （LLE） was proposed. This algorithm is robust against affine transformation, and it improves the robustness via the intrinsic robustness of the LLE. The author chose the coefiqcients of reconstruction weights of the locally linear embedding to embed the random generated watermark. The watermark extraction process was almost as the same process as the watermark embedding. Experimental results have demonstrated that the proposed watermarking scheme was more robust against afiqne transformation.