数字音频水印中，原始载体音频和含水印音频之间的峰值信噪比PSNR和原始水印与提取出来的水印之间的归一化相关系数NC-Digital audio watermarking normalized correlation coefficient between PSNR PSNR between the original carrier audio and watermarked audio and the original watermark and extracted watermark, NC

测试以下图像信息 1。结构内容（SC） 2。均方误差（MSE） 3。峰值信噪比（PSNR值） 4。归一化互相关（NCC） 5。平均差（AD） 6。最大的差异（MD） 7。归一化绝对误差（NAE）-Image/Picture Quality Measures In this application, different image quality measures are calculated for a distorted image with refere