? binned histogram error

Posted by Roger Bourne on Aug 13, 2008; 7:25am
URL: http://imagej.273.s1.nabble.com/binned-histogram-error-tp3695393.html

I am trying to demonstrate to students that equalization tends to
flatten the image histogram (at least it a binned histogram should be
flat. The regular histogram is comb-like after equalization).
When I use alt^H to plot a binned histogram I don't get the expected
flat histogram no matter how big the bins are.
YET, if I plot a cumulative histogram from the regular histogram of the
equalized image I get a straight line as expected.
If I plot a cumulative histogram from binned histogram data of the
equalized image I get a line similar in shape to the unequalized image.
It seems to me that the binning isn't working properly.

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Roger Bourne
University of Sydney

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