计算原始图像和压缩图像之间average psnr的工具，做多媒体分析方面的人都需要。-Calculation of the original image and compressed image among average psnr tools make multi-media analysis are required.

视频编码标准中，用于计算两种方法峰值信噪比以及码率改变的非常有用的软件-Video coding standard, the two methods used to calculate the peak signal to noise ratio and bit rate change is very useful software