[Insight-users] Eigenvector computation of Image Hessian

[Krishnan V]

Hi Karthik,
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.
krishnan

On Wed, Jul 7, 2010 at 9:13 PM, Karthik Krishnan <
karthik.krishnan at kitware.com> wrote:

> 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)
>
> You could write a functor just like itk::SymmetricEigenAnalysisImageFilter
> does to run this over all the pixels and generate the eigen vector images.
>
--
> karthik
>
>
> On Wed, Jul 7, 2010 at 5:49 PM, Krishnan V <v.srikrishnan at gmail.com>wrote:
>
>> Hi,
>> 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.
>> Thanks
>> Krishnan
>>
>> _____________________________________
>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at
>> http://www.kitware.com/opensource/opensource.html
>>
>> Kitware offers ITK Training Courses, for more information visit:
>> http://www.kitware.com/products/protraining.html
>>
>> Please keep messages on-topic and check the ITK FAQ at:
>> http://www.itk.org/Wiki/ITK_FAQ
>>
>> Follow this link to subscribe/unsubscribe:
>> http://www.itk.org/mailman/listinfo/insight-users
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.itk.org/pipermail/insight-users/attachments/20100708/a9023d4b/attachment.htm>