img = imread('mdb025.jpg');
[rows,cols]=size(img);
r=zeros(rows,cols);
g=zeros(rows,cols);
b=zeros(rows,cols);
r=double(img);
g=double(img);
b=double(img);
rgb=cat(3,r,g,b);
imwrite(uint8(rgb),'mdb025-rgb.jpg');
img = imread('mdb025.jpg');
[rows,cols]=size(img);
r=zeros(rows,cols);
g=zeros(rows,cols);
b=zeros(rows,cols);
r=double(img);
g=double(img);
b=double(img);
rgb=cat(3,r,g,b);
imwrite(uint8(rgb),'mdb025-rgb.jpg');
