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histogram

hi,iam new to this site.
hope i will find some help.
iam new to imageprocessing coding in c++.
so,iam facing lots of problems with it.
some how till now i could implement my c++ knowledge in doing background subtraction and connected component analysys,
but now iam stuck at finding histogram of a given image.
plz any one help me how do we find histogram of a given image and also its background subtracted image and how do we compare this both.
plz help me out with giving me examples if possible.
ihanx
Sep 8 '06 #1
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