中文说明：效果非常好的数字水印的源代码，实现了基于小波变换的奇异值分解算法，选取载体图像的LH子带作为载体，并进行攻击测试算法性能
English Description：
Very good effect of digital watermarking source code, the implementation of the singular value decomposition algorithm based on wavelet transform, select the carrier image of the LH subband as the carrier, and attack test algorithm performance