摘要
为了确保水印算法的不可见性和鲁棒性,提出一种基于小波块的算法。根据人类的视觉特性,由图像的纹理、频率、方向特征自适应地确定嵌入位置与强度。该算法对一般的攻击,如裁剪、压缩、加噪、图像增强等具有一定的鲁棒性。
In order to minimize the distortion of the watermarked image and to enhance robustness,an algorithm is put forward based on wavelet block.And it uses the texture,frequency and direction of image to choose the embedding position and intensity according to human visual properties.The experiments demonstrate that the watermarking is robust to the common signal processing techniques including cropping,compressing,noising,image enhancing and so on.
基金
黄河科技学院自然科学研究项目(KYZR201004)
