Hi Eleni,<br><br>The RMS change values are now computed after reinitialization to signed distance functions. So, it will now show up as small values. Remember to download the latest CVS version.<br><br>Kishore<br><br><div class="gmail_quote">
On Mon, Sep 7, 2009 at 8:06 PM, Sgouritsa, Eleni <span dir="ltr"><<a href="mailto:esgourit@central.uh.edu">esgourit@central.uh.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>
<p><font size="2">Hello Kishore,<br>
I am sorry for the multiple e-mails. Please let me know about any progress in the issue with the high RMS change values. Do you also face the same problem?<br>
<br>
Best regards,<div class="im"><br>
Eleni<br>
<br>
<br>
-----Original Message-----<br>
From: Sgouritsa, Eleni<br></div><div><div></div><div class="h5">
Sent: Tue 8/25/2009 12:40 PM<br>
To: Kishore Mosaliganti; <a href="mailto:insight-users@itk.org" target="_blank">insight-users@itk.org</a><br>
Subject: RE: [Insight-users] itkScalarChanAndVeseSparseLevelSetImageFilter - RMS Change<br>
<br>
Hello Kishore,<br>
do you have any updates?<br>
<br>
Best wishes,<br>
Eleni<br>
<br>
<br>
-----Original Message-----<br>
From: Sgouritsa, Eleni<br>
Sent: Tue 8/18/2009 9:59 AM<br>
To: Kishore Mosaliganti; <a href="mailto:insight-users@itk.org" target="_blank">insight-users@itk.org</a><br>
Subject: RE: [Insight-users] itkScalarChanAndVeseSparseLevelSetImageFilter - RMS Change<br>
<br>
Hello Kishore,<br>
<br>
thank you for your answer. Let me clarify myself: I am currently just working on the sparse case. My problem is that I get very high values of RMS Change between<br>
the iterations of the level set. As you said, RMS values are used for indicating the convergence of the evolution. I would expect them to be around lets say 0.1 near convergence but I get all the time very high changes during the evolution, RMS change values like 263450, meaning huge numbers.<br>
Do you know why is this happening?<br>
Thank you very much.<br>
<br>
Regards,<br>
Eleni<br>
<br>
<br>
-----Original Message-----<br>
From: Kishore Mosaliganti [<a href="mailto:kishoreraom@gmail.com" target="_blank">mailto:kishoreraom@gmail.com</a>]<br>
Sent: Tue 8/18/2009 9:07 AM<br>
To: Sgouritsa, Eleni ; <a href="mailto:insight-users@itk.org" target="_blank">insight-users@itk.org</a><br>
Subject: Re: [Insight-users] itkScalarChanAndVeseSparseLevelSetImageFilter - RMS Change<br>
<br>
Hi Eleni,<br>
<br>
I am back at work :).<br>
<br>
Ok, we made several corrections to the code in the past two months and you<br>
can download the latest CVS version. Many thanks for your feedback on using<br>
the code. It helped us identify bugs and clean up the code further.<br>
<br>
Your question was regarding the RMS Error values computed by the Dense and<br>
Sparse filters on the same image producing different values.<br>
<br>
The dense filter works on the levelset function defined on the whole image<br>
domain. As a result, the RMS values are computed on changes in the function<br>
everywhere.<br>
<br>
The sparse filter works only locally to the 0 level-set (hence the name<br>
sparse). The RMS values look at a small band of pixels. Therefore, the<br>
values in this case are at a different range.<br>
<br>
Irrespective, the RMS values are used for indicating the convergence of the<br>
evolution. Is there any reason why you want them to be at the same range ?<br>
<br>
Best,<br>
Kishore<br>
<br>
On Mon, Aug 17, 2009 at 6:37 PM, Sgouritsa, Eleni<br>
<<a href="mailto:esgourit@central.uh.edu" target="_blank">esgourit@central.uh.edu</a>>wrote:<br>
<br>
> Hello,<br>
> I hope everything went well concerning the embassy.<br>
> Do you have any updates for the high RMS values? Was this problem fixed?<br>
><br>
> Regards,<br>
> Eleni<br>
><br>
><br>
><br>
> -----Original Message-----<br>
> From: alex gouaillard [<a href="mailto:alexandre_gouaillard@hms.harvard.edu" target="_blank">mailto:alexandre_gouaillard@hms.harvard.edu</a><<a href="mailto:alexandre_gouaillard@hms.harvard.edu" target="_blank">alexandre_gouaillard@hms.harvard.edu</a>><br>
> ]<br>
> Sent: Thu 7/2/2009 2:32 PM<br>
> To: Sgouritsa, Eleni<br>
> Cc: <a href="mailto:insight-users@itk.org" target="_blank">insight-users@itk.org</a><br>
> Subject: Re: [Insight-users] itkScalarChanAndVeseSparseLevelSetImageFilter<br>
> - RMS Change<br>
><br>
> hi eleni,<br>
><br>
> Kishore has been release by the US embassy in India (without any<br>
> ransom shall I had) and should be back in town july 9th.<br>
><br>
> We will adress this issue right after that and keep you informed.<br>
><br>
> thanks again for your feedback.<br>
><br>
> alex.<br>
><br>
><br>
> On Jul 2, 2009, at 12:53 PM, Sgouritsa, Eleni wrote:<br>
><br>
> > Hello,<br>
> > I still have a problem with very high values of RMS Change between<br>
> > the iterations of the level set. Any help or direction on how to<br>
> > solve this would be appreciated a lot.<br>
> > Thank you very much.<br>
> ><br>
> > Best regards,<br>
> > Eleni<br>
> ><br>
> > <ATT00001.txt><br>
><br>
><br>
><br>
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