untitled4.m

对数字图象进行分步处理,第一步滤波, 第二步去噪,第三步显示

%2.11 (2)
b=[0,0.2];a=[1,0,0.8];
[h,t]=impz(b,a,40);
subplot(211)
stem(t,h,'.');grid on;

%2.11(3)
b=[0,0.2];a=[1,0,0.8];
x=ones(100);t=1:100;
y=filter(b,a,x);
subplot(212)
plot(t,x,'g.',t,y,'k-');