s038.m

简单的数字图像处理程序

% 灰度图像伪彩色显示(三色)  s038
I38=imread('1.jpg');
I380=rgb2gray(I38);
[m,n]=size(I380);
for i=1:m
    for j=1:n
        if I380(i,j)<77
            a(i,j,1)=1;
            a(i,j,2)=0; 
            a(i,j,3)=0;
        elseif I380(i,j)<150
            a(i,j,1)=0;
            a(i,j,2)=1; 
            a(i,j,3)=0;
        else
            a(i,j,1)=0;
            a(i,j,2)=0; 
            a(i,j,3)=1;
        end
    end
end
figure,imshow(a)