s039.m

简单的数字图像处理程序

% 灰度图像伪彩色显示(六色)  s039
I39=imread('1.jpg');
I390=rgb2gray(I39);
[m,n]=size(I390);
for i=1:m
    for j=1:n
        if I390(i,j)<42
            a(i,j,1)=1;
            a(i,j,2)=0; 
            a(i,j,3)=0;
        elseif I390(i,j)<84
            a(i,j,1)=1;
            a(i,j,2)=1; 
            a(i,j,3)=0;
        elseif I390(i,j)<126
            a(i,j,1)=0;
            a(i,j,2)=1; 
            a(i,j,3)=0;
        elseif I390(i,j)<168
            a(i,j,1)=0;
            a(i,j,2)=1; 
            a(i,j,3)=1;
        elseif I390(i,j)<210
            a(i,j,1)=0;
            a(i,j,2)=0; 
            a(i,j,3)=1;
        else
            a(i,j,1)=1;
            a(i,j,2)=0; 
            a(i,j,3)=1;
        end
    end
end
figure,imshow(a)