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Thread Subject: Find Peaks in a Histogram

Subject: Find Peaks in a Histogram

From: anonymous

Date: 24 Dec, 2007 16:43:47

Message: 1 of 2

Hey guys,

I am trying to find the peaks of a Histogram's gray scale picture, using
matlab. A peak is the value in Histogram that is bigger than it's closer 2
values left and right. Any ideas?


Subject: Re: Find Peaks in a Histogram

From: Roger Stafford

Date: 23 Dec, 2007 18:10:26

Message: 2 of 2

"anonymous" <arisl@otenet.gr> wrote in message <fkm3et$dv8
$1@mouse.otenet.gr>...
> I am trying to find the peaks of a Histogram's gray scale picture, using
> matlab. A peak is the value in Histogram that is bigger than it's closer 2
> values left and right. Any ideas?
--------
  If h is a row vector of your (histogram) values, (with at least two values) do this:

 hl = [h(2:end),h(end-1)];
 hr = [h(2),h(1:end-1)];
 p = (h > hl) && (h > hr);

Roger Stafford


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