各种滤波器Matlab程序3页.docx

1、 理想低通滤波器Matlab程序M=256;N=256;d0=50;m=fix(M/2);n=fix(N/2);%h=zeros(256,256);for i=1:M for j=1:N d=sqrt(i-m)2+(j-n)2); if(d=d0) h(i,j)=1; else h(i,j)=0; end endendmesh(h)2、巴特沃斯低通滤波器Matlab程序clc;clear;M=256;N=256;d0=50;n=2;m=fix(M/2);n=fix(N/2);%h=zeros(256,256);for i=1:M for j=1:N d=sqrt(i-m)2+(j-n)2); h(i,j)=1/(1+0.414*(d/d0)(2*2); endendmesh(h