How can we calculate the percentage of similarities between two pattern of Histogram?
For example, I have a histogram of template which I called HistA, and I have another histogram which is HistB where I want to check the similarities percentage of HistB with HistA.
I tried check out some of method such as histogram equalization, histogram matching but none of them works with my problem.
As image below, I create a multiple histogram between HistA and HistB. The value of the frequencies were actually value from a 1D data.
I saw the pattern of HistA and HistB almost the same, so I want to know how to calculate the percentage of the similarities of this two histogram.
Measure Bhattacharya co-efficient between the two normalized histograms
and 
as
where N is the number of bins in the histograms.
Note the normalization.
For more information, see Bhattacharya distance|Wikipedia or On a measure of divergence between two statistical populations defined by their probability distributions.