一种空域的数字图像盲水印方案

Blind watermarking scheme for a spatial-domain digital image

提出了一种鲁棒的空域数字图像盲水印方案 ,先将要嵌入的二值图像伪随机重排列成新的水印图像 ,再利用量化策略将它嵌入到原始图像中对比度较大的区域 .本方案对各种纹理的图像具有自适应性 ,在水印提取的过程中不需要原始图像 .实验结果表明水印是不可察觉的 ,经过JPEG有损压缩、低通与中值滤波、剪切等图像处理操作后仍是鲁棒的 .

The blind watermarking scheme for robust spatial domain digital image is presented in this paper. The pixels of the binary watermark image are pseudo randomly permuted to form a new watermark image. And they are embedded in bigger contrast regions of image by a quantization strategy. The scheme is adapted to various texture images and can extract the watermark without the original image. Experimental results show that the proposed scheme is robust for some image processing operations such as lossy JPEG compression, low pass filtering, median filtering and cropping.