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Asked by Jurgen
on 15 Nov 2012

If I have an 8-bit image IM (e.g. cameraman.tif), why does histeq(IM) produce a different result than histeq(IM,ones(1,256))??

Shouldn't they be identical? The description says *hgram* defaults to ones(1,n)*prod(size(A))/n. Since cameraman is 256x256 and n=2^8, shouldn't it scale normally?

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Answer by Matt Fig
on 15 Nov 2012

Accepted answer

IM = imread('cameraman.tif'); I = histeq(IM); I2 = histeq(IM,ones(1,64)*(numel(IM)/64)); isequal(I,I2)

ans =

1

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