Posted by
CARL Philippe (LBP) on
Jun 18, 2014; 7:13am
URL: http://imagej.273.s1.nabble.com/Candidate-for-MaximumFinder-java-update-tp5008256p5008269.html
Dear Aryeh,
What you are describing below, in probably much better words than what I did
it myself, is exactly the improvement I wanted to implement after the
discussion with my colleague.
But looking at the code, I'm not sure whether this may actually be possible
since the noise tolerance value is actually as well used in order to define
what should be considered as a maxima.
This is why I did only minor improvements on the code up to now and that I'm
looking for some expert advices in how such an "relative noise tolerance"
algorithm could be done.
My best regards,
Philippe
-----Message d'origine-----
De : ImageJ Interest Group [mailto:
[hidden email]] De la part de Aryeh
Weiss
Envoyé : mardi 17 juin 2014 20:19
À :
[hidden email]
Objet : Re: Candidate for MaximumFinder.java update
On 6/17/14, 5:41 PM, Philippe CARL wrote:
> Dear all / Wayne,
>
> Please find under the following link:
>
>
http://punias.free.fr/MaximumFinder.java>
> a new version candidate for the Process->Find Maxima
feature where:
>
> - the "Noise tolerance" NumericField has been replaced by a
Slider
> implementing MouseWheelListener features,
>
> - a "Lower threshold" slider has been added implementing as well
> MouseWheelListener features,
>
> - the GenericDialog has been replaced by a
NonBlockingGenericDialog
> (Im not sure whether you would agree on this and would like to know
> the reasons if not).
>
> Also discussing with a colleague on the Find Maxima
feature, he
> came up with the idea of defining a relative "Noise tolerance" value
> which would for example be equal to 10 for a peak having a height H
> and 20 for a peak of height 2H.
>
> And before starting to look into the code I found this as being a good
> idea until I got lost within the algorithm (since the noise tolerance
> is actually as well used in order to define what should be considered as a
maxima).
>
> So now Im not really sure now whether this could be a good idea and
> whether such an implementation is actually possible or not.
>
> Thus I would like to get the opinion of some experts on this and thank
> you very much in advance.
>
> My best regards,
>
> Philippe
>
>
>
> Philippe CARL
>
> Laboratoire de Biophotonique et Pharmacologie
>
> UMR 7213 CNRS - Université de Strasbourg
>
> Faculté de Pharmacie
>
> 74 route du Rhin
>
> 67401 ILLKIRCH
>
> Tel : +33(0)3 68 85 41 84
>
>
>
One feature which I would love to see in "find maximum" is the ability to
threshold each maximum at 50% of its value. So if max=100 we keep everything
over 50, and if max=50 we keep everything over 25, and so on, for each peak.
--aryeh
--
Aryeh Weiss
Faculty of Engineering
Bar Ilan University
Ramat Gan 52900 Israel
Ph: 972-3-5317638
FAX: 972-3-7384051
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