% m10067_1.m 
% 
%  ECE-1467 Data for a problem in Homework set 1 
% 
% By Chuck DiMarzio 
%    Northeastern University 
%    January 2002 
% 
[data,map]=imread('m10067_1.tif','tiff'); 
figure;plot(1:length(map),map,'.'); 
title('colormap'); xlabel('Data Value'); 
ylabel('Display Value (0-1)'); 
% 
% Zoom on the first 
% figure and notice that there are 
% 255 integer values for the greylevel in  
% the picture 
% The map shows that the 3 colors are all 
%  mapped to the same values, because this is 
%  a greyscale image. 
% 
% Now display the image 
for gamma=[1,2,.5,.25]; 
figure; imagesc(1:size(data,1),1:size(data,2),...    
   ((double(data)/256).^gamma)*256); colormap('bone');
colorbar; title(strcat('Gamma = ',num2str(gamma))); 
end;