中文摘要：

提出了一种新的数字水印算法,该算法将LDPC码和图像置乱变换相结合,能实现水印盲提取.实验表明,该算法提高了数字水印算法的稳健性.此外图像置乱实现了对水印图像和载体图像的加密.

英文摘要：

A new digital watermarking algorithm is presented,which combines LDPC with the image scrambling transformation to realize extracting the watermark without the original image.The experiment indicates that the algorithm increases the robustness of digital watermarking and the image scrambling transformation encrypts the images of watermark and carrier.