how to detect the widest peak of a histogram?

dear all, I have a histogram of an image that for detecting a certain point in that image I need to detect the center of the widest peak of this histogram.Can anyone help about this issue?

[Amith Kamath]

could you elaborate on 'center of the widest peak'? It is always helpful to know what you have already tried as well.

Answer 1

[Image Analyst]

The definition of a "peak" is not so straightforward, especially when you have noise. Does that little noise peak on the shoulder of a bigger peak mean that that hump is now actually two peaks instead of one big one with a little bit of noise?

Do you have the Signal Processing Toolbox? If so play around with findpeaks(). Or else search the File Exchange - there are several peak detectors in there I believe.

Feel free to post your image or a screenshot of your histogram if you think that would help us help you. You can post here http://snag.gy

[Image Analyst]

So are we done with this question???