提出了一种将快速响应矩阵码(QR 码)作为水印的加密同轴全息数字水印技术。 该算法将 QR 码作为水印,提高了水印的鲁棒性;利用双随机相位调制技术对水印加密,增强了水印的安全性;通过离散小波变换将全息水印图像嵌入彩色载体图像的中频系数中,兼顾了水印的不可见性和鲁棒性。 提取水印时,进行高斯滤波处理,增加了 QR 码译码成功率。 实验表明,该算法有良好的不可见性和鲁棒性。

An inline holographic digital watermark technology using quick response code (QR code) as watermark was put forward. The algorithm used QR code as watermark to improve robustness; the watermark was encrypted by double random phase encryption technology to enhance security. The encrypted watermark embedded into the medium frequency by using discrete wavelet transform which could take both invisibility and robustness into account. In watermark extraction, Gaussian filter enhanced recognition and decoding of the QR code. Experiments showed that the algorithm has good invisibility, security, and robustness.