linearfilter

代码说明：

  空域数字图像线性滤波器和频域非递归滤波器（包括：频域变换法、频域抽样法和窗函数法）的Matlab实现。(Airspace linear digital image filters and frequency-domain non-recursive filter (including: frequency-domain transformation method, frequency-domain sampling method and window function method) of the Matlab implementation.)