【摘要】 本文提出了一种基于频域的文档图像自适应可见水印加密算法。利用文档图像的纹理特性将原始图像分块,根据不同的嵌入强度将可见水印图像嵌入原始图像的频域中以显示所有权。实验表明,可见水印以自适应方式嵌入,想在不损坏图像使用质量的前提下,去除或毁坏图像中的可见水印是很困难的,具有较强的鲁棒性。更多还原

【Abstract】 This paper presents an adaptive document image watermarking algorithm. The original image is segmented into blocks based on the texture property, and different embedding intensities are used when embed the watermarking into the DCT domain of the original image to indicate ownership of the image. The experiment shows that with the proposed watermarking system, it is difficult to remove the visible watermarking without damaging the image.更多还原