[Insight-users] some contributions

[Stefan Klein]

Eh, but then we'll have 2 SPSA-optimizers....
Wouldn't it be the best to have one that combines the good of all 3 versions?

plan:
- we include the scales thing and the test and some elements from Mathieu's 
implementation
- we'll mail it to the list.
- you check it (if we combined all features correctly) and correct it
- Daniel commits it to the itk.

Marius&Stefan.



At 08:39 17/03/05, Blezek, Daniel J (Research) wrote:
>Oddly enough, I also have an implementation of the SPSA algorithm!  I 
>offered to put Stefan's implementation in, provided he account for m_Scale 
>and write a test.  I'll make the same offer for you, Mathieu.  I've put my 
>code on the itk Wiki @ http://itk.org/Wiki/SPSAOptimizer  however, I 
>haven't tested my code very well, as it's new.
>
>-dan
>
>-----Original Message-----
>From: insight-users-bounces at itk.org
>[mailto:insight-users-bounces at itk.org]On Behalf Of Mathieu De Craene
>Sent: Thursday, March 17, 2005 8:20 AM
>To: Stefan Klein
>Cc: Insight-users at itk.org; insight-developers at itk.org
>Subject: Re: [Insight-users] some contributions
>
>
>Le mercredi 16 mars 2005 à 21:34 +0100, Stefan Klein a écrit :
> > Hi all,
> >
> > We have created some classes that are useful for us. We hope also for 
> other
> > people, so we would like to contribute them. The code can be found for
> > download on:
> >       http://www.isi.uu.nl/People/Stefan/
> >
> > - itkEulerTransform.h: This class is a wrap around the Euler2DTransform 
> and
> > the Euler3DTransform. In this way it is templated over the dimension, like
> > other Transform-classes.
> >
> > - SimultaneousPerturbation.zip: This class implements the so-called
> > Simultaneous Perturbation method as an ITK optimizer. For more info on 
> this
> > optimization method, go to:
> >       http://www.jhuapl.edu/SPSA
> >
>
>I have also have some code for SPSA optimization. I found it quite
>useful for rigid registration (it seems to be pretty robust). The source
>code for a rigid registration application based on ITK is available on
>
>http://euterpe.tele.ucl.ac.be/Waleo2/vesale/
>
>I would like to compare our implementations of this optimizer.
>
>Regards,
>
>Mathieu.
>
> > - FullSearch.zip: This class implements a (semi-)Full Search optimization
> > routine. This can be useful for research, to scan the optimization 
> surface,
> > or to evaluate the result of other optimizers. It allows the user to
> > specify which parameters should be evaluated, in which range.
> >
> > Since we have contributed 3 things now, we also have a feature request; as
> > a reward :-)
> >
> > Would it be possible to add a public function to the
> > MattesMutualInformationImageToImageMetric that forces the metric to select
> > new spatial samples? This would be useful if you would want new spatial
> > samples every iteration for example.
> >
> > We hope that the contributions are useful. Any comments are welcome!!
> >
> > Marius and Stefan.
> >
> >
> > Marius Staring, Stefan Klein
> > Image Sciences Institute
> > University Medical Centre Utrecht
> > Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
> > phone: +31 (0)30 250 3186, fax: +31 (0)30 251 3399
> > {marius,stefan}@isi.uu.nl,
> > http://www.isi.uu.nl/People/Marius
> > http://www.isi.uu.nl/People/?stefan
> >
> >
> >
> >
> >
> >
> >
> >
> > _______________________________________________
> > Insight-users mailing list
> > Insight-users at itk.org
> > http://www.itk.org/mailman/listinfo/insight-users
> >
>
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