利用简单的离散小波变换系数，嵌入水印信息-Using a simple discrete wavelet transform coefficients, the watermark is embedded

利用基于小波变换和矩阵奇异值分解方法给图片加水印，提取水印。可直接运行-Using wavelet transform and singular value decomposition based image to add watermark, the watermark extraction. Can be directly run