<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META NAME="Generator" CONTENT="MS Exchange Server version 6.5.7654.12">
<TITLE>RE: [Insight-users] Genus</TITLE>
</HEAD>
<BODY>
<!-- Converted from text/plain format -->
<P><FONT SIZE=2>Thank you,<BR>
I took a fast look to this class last week.<BR>
Actually I use a derived class of itkMesh for my mesh, indexedtrianglemesh that somebody had proposed in the list before.<BR>
For the checker class the ValidateEulerCharacteristic() method returns true or false. How can I get the genus of my mesh?<BR>
<BR>
Yes, Kishore solved most of the problems for the Chan & Vese. We are still discussing for the remaining.<BR>
<BR>
Regards,<BR>
Eleni<BR>
<BR>
-----Original Message-----<BR>
From: alex gouaillard [<A HREF="mailto:alexandre_gouaillard@hms.harvard.edu">mailto:alexandre_gouaillard@hms.harvard.edu</A>]<BR>
Sent: Sun 6/21/2009 3:36 PM<BR>
To: Sgouritsa, Eleni<BR>
Cc: insight-users@itk.org<BR>
Subject: Re: [Insight-users] Genus<BR>
<BR>
hi eleni,<BR>
<BR>
the genus of a mesh, or of it's dual, is the same.<BR>
<BR>
If you use a QuadEdgeMesh, note that you have the primal *and* dual <BR>
mesh connectivity stored in the surface. You have only one geometry <BR>
though (up to you to decide if it is the primal or dual, as it's <BR>
reversible, it's up to the user to decide which one is the primal and <BR>
which one is the dual.)<BR>
<BR>
Again, if you use a QuadEdgeMEsh (which I recommend if you;re going to <BR>
work with surfaces and want to handle topology nicely), you can take a <BR>
look at the itkQuadEdgeMeshTopologyChecker class, and specifically the <BR>
ValidateEulerCharacteristic() method.<BR>
<A HREF="http://www.itk.org/Doxygen/html/classitk_1_1QuadEdgeMeshTopologyChecker.html">http://www.itk.org/Doxygen/html/classitk_1_1QuadEdgeMeshTopologyChecker.html</A><BR>
the doxygen documentation is not great (our bad), but the .txx is <BR>
documented.<BR>
<BR>
BTW is everything alright with Chan & Vesse ? I think kishore solved <BR>
most of the problems, right?<BR>
<BR>
let me know if that helps.<BR>
<BR>
alex.<BR>
<BR>
<BR>
On Jun 21, 2009, at 4:14 PM, Sgouritsa, Eleni wrote:<BR>
<BR>
> Hello,<BR>
> is there an itk class to use that gives me the genus of a volume (or <BR>
> its dual mesh)?<BR>
><BR>
> Regards,<BR>
> Eleni<BR>
><BR>
> <ATT00001.txt><BR>
<BR>
<BR>
</FONT>
</P>
</BODY>
</HTML>