sumarize11_5_4a.m

from start to grasp the matlab

%读入图像
I = imread('eight.tif');
imshow(I)
%加入椒盐噪声
J = imnoise(I,'salt & pepper',0.02);
%显示加入噪声后的图像
figure, imshow(J)
%进行中值滤波
L = medfilt2(J,[3 3]);
%显示中值滤波后的图像
figure, imshow(L)