matlab 高通滤波函数、低通滤波函数、信噪比函数、图像融合函数、代码简单 ，却能实现所需功能-high-pass filter function matlab, low-pass filter function, SNR function, image fusion function, the code is simple, but it can achieve the required functions

在图像处理中主要研究信噪比比较低时，对图像如何进行处理-The C++ implementation is supported on Unix-type platforms, including Linux, SunOS and MacOS. The installation requires g++ (version 3.2 or higher), and Matlab’s mex compiler (version 13 or higher) if you want to install

无线通信qpsk调制键控移相调制（QPSK）：调制效率高，要求传送途径的信噪比低，适合卫星广播。 -The wireless communication phase shift keying modulation qpsk modulation (QPSK): high modulation efficiency of the transmission path low SNR required for satellite broadcasting.