中文摘要：

提出了一种新的基于JPEG图像的空域水印算法.该算法采用随机位平面替换方法,选用二值图像作为待嵌入水印.水印嵌入过程是先对载体图像JPEG解码,然后根据密钥选择位平面进行替换;提取过程采用统计检测方法,进行水印盲提取.实验结果表明,本算法可有效地实现JPEG图像的空域水印嵌入和盲提取,具有较高的安全性和不可见性,对于剪切攻击具有较好的鲁棒性.

英文摘要：

A new spatial domain watermarking algorithm based on JPEG image is developed. The random bit plane replacement method is used by the algorithm and binary image for inserting watermark is selected. The embedding process is firstly JPEG decoding on carrier image, then selects the bit plane to replace the watermark according to the key. The extracting process is to use statistical detecting method to extract the watermark blindly. The experimental results show that it is an effective blind watermarking algorithm; it provides better security, invisibility and is robust to cutting attacks.