<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><div>Hi,
<p>I'm a new user of ITK. ihave many difficulties and i need help.
I have dicom image and MIP image.i want to read them on itk and then
execute one of the segmentation methods and display the segmentation
results. My questions are: 1.how to read a dicom image or MIP 2.if i
have to display the segmentation result doi need vtk? when i read the
examples and had to try them i have diffculties to undersatnd some
things like ( region, instantiate region,..) Please can you help to go
faster in my application specially i'm a new user on image processing
and itk environement.
</p><p>Thanks in advance, <br></p><p>syrine<br>
</p></div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><font size="2" face="Tahoma"><hr size="1"><b><span style="font-weight: bold;">De :</span></b> Nicholas Tustison <ntustison@gmail.com><br><b><span style="font-weight: bold;">À :</span></b> motes motes <mort.motes@gmail.com><br><b><span style="font-weight: bold;">Cc :</span></b> Insight Users <insight-users@itk.org><br><b><span style="font-weight: bold;">Envoyé le :</span></b> Lundi, 15 Juin 2009, 13h24mn 15s<br><b><span style="font-weight: bold;">Objet :</span></b> Re: [Insight-users] BSpline implementation?<br></font><br><div>Based on my experience, I would guess that most filters/functions/etc. in ITK use uniform B-splines. As such the core class would be
itkBSplineKernelFunction which evaluates uniform B-spline values for orders 0-4. I wrote the itkCoxDeBoorBSplineKernelFunction to house other functionality and to generalize uniform B-spline evaluation to n orders (although, for straightforward evaluation of orders 0-4, it is faster to use the itkBSplineKernelFunction class). </div><div><br></div><div>I haven't used the class itkNonUniformBSpline but, according to the doxygen documentation, it is still under development, so you could perhaps improve functionality there.</div><div><br></div><div>Nick</div><br><div><div>On Jun 15, 2009, at 3:40 AM, motes motes wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">I have an assignment where I need to evaluate the ITK BSpline implementation and see if I can improve the performance based on my own implementation (based on the algorithms from The NURBS Book). In this implementation
only the k basisfunctions different from 0 are determined where k is the order of the BSpline. Further the knot-differences from lower order basisfunctions are reused.<br> <br>I therefore need to find the source files in ITK that implements these methods or alternative approaches if they are visible for the end user.<br><br><br><div class="gmail_quote">On Mon, Jun 15, 2009 at 12:35 AM, Nick Tustison <span dir="ltr"><<a rel="nofollow" ymailto="mailto:ntustison@wustl.edu" target="_blank" href="mailto:ntustison@wustl.edu">ntustison@wustl.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>Hi motes, </div> <div> </div> <div>As you note there are a few classes related to B-splines. Perhaps you can tell us what you're trying to accomplish and someone can point you in the right direction.</div> <div> </div> <div>Nick
Tustison<br><br></div> <div class="gmail_quote"><div><div></div><div class="h5">On Sun, Jun 14, 2009 at 5:35 PM, motes motes <span dir="ltr"><<a rel="nofollow" ymailto="mailto:mort.motes@gmail.com" target="_blank" href="mailto:mort.motes@gmail.com">mort.motes@gmail.com</a>></span> wrote:<br> </div></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0px 0px 0px 0.8ex; padding-left: 1ex;"><div><div></div><div class="h5">I am trying to find out how the BSplines used in the ITK are implemented. I have been looking at the files in the folder:<br> <br>InsightToolkit-3.12.0\Code\Common<br><br>But it seems that its mainly functions/classes that uses BSplines. Where are the core BSpline implementation located and how is it implemented? I have been looking for details like:<br> <br>B-spline Basis functions: Cox de boor recursion, de Casteljau, etc ?<br>Containers for knots, controlpoints,
datapoints<br>etc..<br><br>Any help appreciated!<br><br></div></div>_____________________________________<br> Powered by <a rel="nofollow" target="_blank" href="http://www.kitware.com/">www.kitware.com</a><br> <br>Visit other Kitware open-source projects at<br><a rel="nofollow" target="_blank" href="http://www.kitware.com/opensource/opensource.html">http://www.kitware.com/opensource/opensource.html</a><br><br>Please keep messages on-topic and check the ITK FAQ at: <a rel="nofollow" target="_blank" href="http://www.itk.org/Wiki/ITK_FAQ">http://www.itk.org/Wiki/ITK_FAQ</a><br> <br>Follow this link to subscribe/unsubscribe:<br><a rel="nofollow" target="_blank" href="http://www.itk.org/mailman/listinfo/insight-users">http://www.itk.org/mailman/listinfo/insight-users</a><br><br></blockquote></div><br> </blockquote></div><br></blockquote></div><br></div></div></div><br>
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