clear all;
close all;
a = imread('hand.bmp');
figure,imshow(a);
h=imhist(a);
h1=h(1:2:256);
h2=1:2:256;
figure,stem(h2,h1,'r--');
% figure,imhist(a);
[m,n] = size(a);
for i = 1:m
for j = 1:n
result(i,j) = 2*a(i,j);
end
end
figure,imshow(result);
g=imhist(result);
g1=g(1:2:256);
g2=1:2:256;
figure,stem(g2,g1,'r--');
% figure,imhist(g);
imwrite(result,'e:\result.tif','tif') ;