中文摘要：

提出一种基于关系的离散余弦变换域数字水印算法．选用二值图像作为待嵌入的水印，对载体图像进行8×8的DCT变换，根据二值图像的像素取值来调整DCT系数的大小关系；同时考虑人类视觉特性来选择水印的嵌入位置。实验表明，本算法在保证了稳健性的同时，具有更好的不可见性和较高的峰值信噪比RSN，p值．

英文摘要：

An improved watermarking scheme based upon relationship in DCT （discrete cosine transform） domain is proposed. This algorithm uses binary image as the watermarks, makes 8×8 DCT on the carrier image, then utilizes the pixel value of binary image to adjust the relationships of DCT coefficients, and selects the embedding locations according to human visual features. Compared with the approach of the reference , the experimental results show that this algorithm is more effective in the invisibility and has higher peak of the signal-to-noise ratio （RSN,p）.