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Hi,
When making an histogram of (single channel) pixel intensities for a selection made of multiple regions, the result is often (but not always) very far from the expected one.
Eg, when combining two similarly-sized regions with average pixel values of 133 and 145, you can get a combined average which is well outside the 133-145 range, corresponding to a combined histogram which does not look at all like the combination of the two single-region histograms.
Has anyone encountered that problem ? and then solved it ?
Thanks for your help !
Andre
When making an histogram of (single channel) pixel intensities for a selection made of multiple regions, the result is often (but not always) very far from the expected one.
Eg, when combining two similarly-sized regions with average pixel values of 133 and 145, you can get a combined average which is well outside the 133-145 range, corresponding to a combined histogram which does not look at all like the combination of the two single-region histograms.
Has anyone encountered that problem ? and then solved it ?
Thanks for your help !
Andre
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