在研究傅里叶加密全息技术、数字水印技术和小波理论的基础上，提出了一种基于小波变换的傅里叶加密印刷水印算法。利用该算法重建水印，有效地抑制了载体图像的低频分量对水印产生的噪声的影响；使能量分布在图像的所有像素上，具有良好的抗裁切能力；算法采用密钥加强了水印的安全性。实验表明：嵌入水印的图像一次印刷可检测，二次扫描印刷提取的水印脆弱，可以抵抗基本的图像处理操作。

A wavelet transform of Fourier encryption printing watermarking algorithm was put forward on the basis of Fourier encryption holographic technology, digital watermarking technology and wavelet theory. The algorithm was used to rebuild watermark, which can effectively control the noise caused by low frequency component of host images; it has good resistance to cutting since energy is distributed on all the pixels; and it has better security of watermark with a secret key. Experimental results showed that the embedded watermark can satisfy the need of detecting watermark and resistance to scanning as well as basic image processing for ordinary printing technology.