使用改进的脉冲耦合神经网络滤除混合噪声。denoisemixednoise.m为主程序，整个程序分为两步，第一步使用PCNN滤除部分噪声，第二步使用中值滤波器滤除其余噪声-Using improved PCNN filter mixed noise. denoisemixednoise.m-based procedures, the whole process is divided into two steps, the first step in using the PCNN filter out some noise, the second step using the median filter to filter out the remaining noise