基于RLS算法设计实现自适应滤波器，可以实现信号滤波-Based on RLS adaptive filter algorithm design, signal filtering can be achieved

用3*3的窗口对图像进行中值滤波，证明对于椒盐噪声和高斯噪声，中值滤波对前者效果更好-3* 3 window with the image median filtering, proof for salt and pepper noise and Gaussian noise, median filtering effect is better for the former