matlab运动目标检测-背景差分算法

clear;
clc;
i1=imread('D:\Work\1.png');
i2=imread('D:\Work\2.png');
i1=rgb2gray(i1);
i2=rgb2gray(i2);
[m,n]=size(i1);
im1=double(i1);
im2=double(i2);
 
i3=zeros(size(i1));
for i=1:m;
    for j=1:n;
        if abs((im2(i,j))-(im1(i,j)))>70  ; %最佳阈值在70到90之间
              i3(i,j)=1;
        else abs((im2(i,j))-(im1(i,j)))<70;
              i3(i,j)=0;
        end
    end;
end;
imshow(i3);
s=size(i3)