【摘要】 提出了一种基于小波变换及图像边缘特征的盲水印算法。该算法先将待处理图像作小波变换处理,根据小波变换后的第二级HL2及LH2系数中的边缘信息,将一个随机序列(1与-1个数相同)按一定规则嵌入到HL2及LH2的边缘系数当中。实验结果表明,该算法对JPEG压缩及图像剪裁、缩放、滤波有较好的鲁棒性,特别对于基于小波压缩算法的图像具有很好的鲁棒性。更多还原

【Abstract】 A blind watermarking algorithm based on wavelet transform and image edge information is presented in this paper.In the algorithm,an image is transformed with wavelet,and a random serial(the number of 1 and -1 is the same)then is embedded into the image edge of wavelet coefficient.The experiments show that the blind watermarking algorithm is robust in JPEG image compression,image clipping,image scaling and image filtering,especially in wavelet image compression.更多还原