基于平衡多小波的双彩色图像水印算法

Algorithm Based on Balance Multi-Wavelet of Double Color Image Watermarking

提出一种在YCbCr色彩空间下,对原始彩色载体图像和彩色水印图像进行平衡多小波变换,将水印信息嵌入到低中频信息中,水印嵌入前利用Arnold置乱对Y通道灰度水印图像进行加密处理,保证算法的安全性。实验表明,该算法具有良好的鲁棒性,而且在噪声攻击和抵抗JPEG压缩性能方面有明显的提高。

This article proposed an algorithm of balanced multi-wavelet transform for the original color carrier image and color watermark image in YCbCr color space, and the watermark information is embedded into the low and middle approximation information. Before the watermark is embedded, Arnold scrambling is used to encrypt the Y-channel gray watermark image to ensure the security of the algorithm. Experiments show that the algorithm not only has good robustness, but also significantly improves the performance in resistance to noise attack and JPEG compression.