包括最后计算压缩图像的峰值信噪比和压缩效果的源码,FIR 底通和带通滤波器和IIR 底通和带通滤波器，通过matlab代码。- Including the final calculation of the compressed image peak signal to noise ratio and compression of the source, Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass f