基于JPEG图像的改进小波变换信息隐藏算法

Information Hiding Algorithm of Wavelet Transform Based on JPEG Image

利用小波多分辨率分析技术,提出一种基于JPEG图像的改进小波变换信息隐藏算法.信息嵌入时,该算法在JPEG图像上使用YCb Cr颜色空间变换进行二维小波分解和重构,保证了嵌入后的图像不失真.验证试验表明:在嵌入容量相同的情况下,改进算法比原算法具有更好的鲁棒性,可以做到图像的无损恢复.

The information hiding algorithm of wavelet transform based on JPEG image is proposed. When the information is embedded, the YCbCr color space transformation is used on the JPEG image, two dimensional wavelet decomposition and reconstruction can ensure that the embedded image is undistorted. Test shows that the improved algorithm has better robustness when the original algorithm has the same embedding capacity,and the distortionless restoration of the image can be achieved.