function  dispraw(fname, width,height)
% [img, size]: image matrix and size vector(width,height, max_gray)
fid = fopen(fname, 'r');
img = fread(fid,[width, height],'uchar');
img = img';
fclose(fid);
%for i=1:width
%for j=1:height
%      img(i,j) = img1(j,i);
%   end
%end
image(img);
axis('off');
axis('image');
return
