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On 7/8/2010 2:19 PM, Ivan Macia wrote:
<blockquote
cite="mid:AANLkTimqfxQAITCDIFlHeN-nKCCQeTwWE03cj-wvxwLs@mail.gmail.com"
type="cite">Hi Krishnan,<br>
<br>
The code that uses the functor should be attached in one of my
recent posts.<br>
<br>
Best regards<br>
<br>
Ivan<br>
<br>
<div class="gmail_quote">2010/7/8 Krishnan V <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:v.srikrishnan@gmail.com"
target="_blank">v.srikrishnan@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;">Hi Karthik,<br>
Thanks for the reply. I do not know enough C++ to write
functors so will probably iterate over the image stack; should
be quite slow though.<br>
<font color="#888888">krishnan</font>
<div>
<div><br>
<br>
<div class="gmail_quote">On Wed, Jul 7, 2010 at 9:13 PM,
Karthik Krishnan <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:karthik.krishnan@kitware.com"
target="_blank">karthik.krishnan@kitware.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt
0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;">Take a look at the class
itk::SymmetricEigenAnalysis. The method
"ComputeEigenValuesAndVectors" computes the eigen
vectors as well as the eigen values for your ND
matrix pixels (the hessians)<br>
<br>
You could write a functor just like
itk::SymmetricEigenAnalysisImageFilter does to run
this over all the pixels and generate the eigen vector
images.<br>
</blockquote>
<blockquote class="gmail_quote" style="margin: 0pt 0pt
0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;">
--<br>
karthik<br>
<br>
<br>
<div class="gmail_quote">
<div>
<div>
On Wed, Jul 7, 2010 at 5:49 PM, Krishnan V <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:v.srikrishnan@gmail.com"
target="_blank">v.srikrishnan@gmail.com</a>></span>
wrote:<br>
</div>
</div>
<blockquote class="gmail_quote" style="border-left:
1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt
0.8ex; padding-left: 1ex;">
<div>
<div>Hi,<br>
I am using SymmetricEigenAnalysisImageFilter
to compute the eigen values and vectors of the
Hessian. I saw the sample code for
Curve3DExtraction as well as previous posts
which talk about eigen value extraction but
none on extracting the eigenvectors. I looked
at the documentation but cannot find anything
which will get the vectors. Maybe I am missing
something elementary but it will be great if
someone can help.<br>
Thanks<br>
<font color="#888888">Krishnan<br>
</font><br>
</div>
</div>
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Hi,<br>
Thanks for the information. I will look it up.<br>
krishnan<br>
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