Abstract: This paper presents a blind watermarking based on lifting wavelet and QR code.The lifting wavelet transform is applied to the original image.The watermark image is dealed with QR code and chaotic systems.The owner of the image embeds the watermark information into the low frequency subband of the original image with the cellular automata.People who want to identify the image，extract the watermark from the watermarked image with the cellular automata，the QR code，and chaotic system.The chaotic system insures the safety of the approach；the lifting wavelet transform and the QR code insure the robustness.The experimental results show that the approach has a high robustness，and can resist to cropping，modification，noise interference.The approach can be widely used in copyright protection，has some practical value.

摘要： 提出了一种结合提升小波和QR码的盲水印实现。嵌入水印时，首先对需要版权保护的图像进行提升小波变换，然后对水印图像进行QR码编码处理，再对得到的QR码图像进行混沌处理以提高算法的安全性，最后将经过QR码编码、混沌处理的水印信息通过元胞自动机处理嵌入到原始图像的提升小波逼近子图中。水印提取时，对经过上述处理后的图像应用元胞自动机、混沌系统、QR码解码得到原始水印信息。仿真结果表明，该实现方法具有较高的鲁棒性，能够抵抗剪切、修改、噪声等攻击。该实现方法能够广泛应用于版权保护领域，具有一定的实用价值。