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<TITLE>RE: [Insight-users] itkScalarChanAndVeseSparseLevelSetImageFilter - RMS Change</TITLE>
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<P><FONT SIZE=2>Hello Kishore,<BR>
<BR>
I downloaded the latest CVS version. When I run my program it always fails in a specific place: itkMultiphaseSparseFiniteDifferenceImageFilter.txx, UpdateActiveLayerValues function, line 508, reporting the following error:"vector subscript out of range". It seems to me that m_PixelDistance is a 6-dimensional array and it tries to get m_PixelDistance[6], that is a non accurate position. Could it be possible to check if you have the same problem?<BR>
Thanks again for your time and help.<BR>
<BR>
Regards,<BR>
Eleni<BR>
<BR>
<BR>
-----Original Message-----<BR>
From: Sgouritsa, Eleni<BR>
Sent: Tue 9/8/2009 3:23 PM<BR>
To: Kishore Mosaliganti<BR>
Cc: insight-users@itk.org<BR>
Subject: RE: [Insight-users] itkScalarChanAndVeseSparseLevelSetImageFilter - RMS Change<BR>
<BR>
Hello Kishore,<BR>
thank you very much.<BR>
<BR>
Eleni<BR>
<BR>
<BR>
-----Original Message-----<BR>
From: Kishore Mosaliganti [<A HREF="mailto:kishoreraom@gmail.com">mailto:kishoreraom@gmail.com</A>]<BR>
Sent: Tue 9/8/2009 3:11 PM<BR>
To: Sgouritsa, Eleni<BR>
Cc: insight-users@itk.org<BR>
Subject: Re: [Insight-users] itkScalarChanAndVeseSparseLevelSetImageFilter - RMS Change<BR>
<BR>
Hi Eleni,<BR>
<BR>
The RMS change values are now computed after reinitialization to signed<BR>
distance functions. So, it will now show up as small values. Remember to<BR>
download the latest CVS version.<BR>
<BR>
Kishore<BR>
<BR>
On Mon, Sep 7, 2009 at 8:06 PM, Sgouritsa, Eleni <esgourit@central.uh.edu>wrote:<BR>
<BR>
> Hello Kishore,<BR>
> I am sorry for the multiple e-mails. Please let me know about any progress<BR>
> in the issue with the high RMS change values. Do you also face the same<BR>
> problem?<BR>
><BR>
> Best regards,<BR>
> Eleni<BR>
><BR>
><BR>
> -----Original Message-----<BR>
> From: Sgouritsa, Eleni<BR>
> Sent: Tue 8/25/2009 12:40 PM<BR>
> To: Kishore Mosaliganti; insight-users@itk.org<BR>
> Subject: RE: [Insight-users] itkScalarChanAndVeseSparseLevelSetImageFilter<BR>
> - 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; insight-users@itk.org<BR>
> Subject: RE: [Insight-users] itkScalarChanAndVeseSparseLevelSetImageFilter<BR>
> - RMS Change<BR>
><BR>
> Hello Kishore,<BR>
><BR>
> thank you for your answer. Let me clarify myself: I am currently just<BR>
> working on the sparse case. My problem is that I get very high values of RMS<BR>
> Change between<BR>
> the iterations of the level set. As you said, RMS values are used for<BR>
> indicating the convergence of the evolution. I would expect them to be<BR>
> around lets say 0.1 near convergence but I get all the time very high<BR>
> changes during the evolution, RMS change values like 263450, meaning huge<BR>
> 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">mailto:kishoreraom@gmail.com</A><kishoreraom@gmail.com><BR>
> ]<BR>
> Sent: Tue 8/18/2009 9:07 AM<BR>
> To: Sgouritsa, Eleni ; insight-users@itk.org<BR>
> Subject: Re: [Insight-users] itkScalarChanAndVeseSparseLevelSetImageFilter<BR>
> - 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>
> <esgourit@central.uh.edu>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">mailto:alexandre_gouaillard@hms.harvard.edu</A><alexandre_gouaillard@hms.harvard.edu><BR>
> <alexandre_gouaillard@hms.harvard.edu><BR>
> > ]<BR>
> > Sent: Thu 7/2/2009 2:32 PM<BR>
> > To: Sgouritsa, Eleni<BR>
> > Cc: insight-users@itk.org<BR>
> > Subject: Re: [Insight-users]<BR>
> 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>
> > _____________________________________<BR>
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