<div><br>Hi Luis,</div>
<div> </div>
<div>I want to use Level Set method to solve segmentation problem. My initial active contour is actually a Signed Distance Function Phi obtained by other active contour methods, therefore seed points and applying Fast Marching method could not help me. Maybe, I can't use idea behind of GeodesicActiveCountourShapePriorLevelSetFilter in my method.</div>
<div> </div>
<div>By the way I have another question. In the training part of my method, PCA is used to train set of images represented by Signed Distance Function. Converting binary images to SDF is easily possible. But my problem is how to build binary image( labelObject) that shows the object ( ROI) and background. I followed this link <a href="http://www.itk.org/pipermail/insight-users/2008-May/025963.html">http://www.itk.org/pipermail/insight-users/2008-May/025963.html</a> but I have still problem with PolygonSpatialObject. I could not find any good resource in itkGuild. Could you please help me.</div>
<div> </div>
<div>Thanks in advance.</div>
<div> </div>
<div>Best regards,</div>
<div>Mahshid</div>
<div><br> </div>
<div class="gmail_quote">On Thu, May 21, 2009 at 11:55 AM, Luis Ibanez <span dir="ltr"><<a href="mailto:luis.ibanez@kitware.com">luis.ibanez@kitware.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid"><br>Hi Mahshid,<br><br><br>I'm not sure that I understand your question.<br><br>Do you want to reimplement the ITK level set methods ?<br>
<br>or<br><br>do you want to use them in order to solve a segmentation method ?<br><br><br><br>Why do you make a difference between<br><br> * "Fast Marching" methods and<br> * "Level Set" methods<br>
<br><br><br>Is there a reason why you can't use the current LevelSet methods<br>in ITK ?<br><br><br> Regards,<br><br><br> Luis<br><br><br><br>------------------------<br>mahshid farzinfar wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div>
<div></div>
<div class="h5">Hi all,<br> I would like to use and implement Level Set Methods using ITK libraries. As I undesrtand, ITK covers FastMarching Methods whitin its libraries. My project is nearly related to the file *"GeodesicActiveContourShapePriorLevelSetImageFilter.cxx".* May I know whether it is possible to implement it using LevelSet Methods instead of FastMarching Methods. Is there any libraries which cover LevelSet Methods?<br>
Thanks,<br>Best regards,<br>Mahshid<br><br><br></div></div>------------------------------------------------------------------------<br><br>_____________________________________<br>Powered by <a href="http://www.kitware.com/" target="_blank">www.kitware.com</a><br>
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