[Insight-users] medial curve extraction compile error

[Oleksandr Dzyubak]

Dear Xavier,

I still cannot make the algorithm work. It does not extract the centerline.
What am I doing wrong?

To make my tests simple, I made a 3D cylinder extruded along Z axis 
(just one vessel)
and work with that binary image (Object white, background black. Should 
it be vice versa?).
I have tried several DT algorithms from the ITK lib (Danielsson, Maurer, 
and "Generalized DT").
As you advised, I made a signed distance transform on the images with 
negative sign inside.

You say that DT should be "with positive sign outside the object, and 
negative sign inside."
So it has to be "zero-crossing at the object edge" then, right?
Has the cylinder to be solid or just a surface before DT?

Concerning the parameters sigma and threshold.
"Usage example" suggests  sigma=1.0 and threshold=0.0.
In the code the defaults are sigma=0.5 and threshold=0.0.
How sensitive are they to variations?

Thanks,

Alex

Xavier Mellado Esteban wrote:
>
>     Dear Alex,
>
>     I fixed the problem. I did some changes in file
> "itkAverageOutwardFluxImageFilter.h" in order to compile it with gcc
> 4.x.
>
>     I test it on a 32 bits machine, with OpenSuse 10.3, gcc 4.2.1, and
> ITK 3.4. It works now and it was repacked and uploaded as 
> "MedialCurve-IJCv21.zip".
> Try it, please. Let me know if you still have problems.
>
>     Please, read carefully the paper, and look at the testing data, to
> know if your input images are suitable for this filter. They must be
> signed distance transform images, with positive sign outside the
> object, and negative sign inside.
>
>     I hope this filter helps you. Feel free to contact me with any doubt.
>
>                  Best regards,
>                                  Xavi
>
>
>
>
>
>
>
> Oleksandr Dzyubak <adzyubak at gmail.com> ha escrito:
>
>>
>> Hello,
>>
>> I just tried to test "Flux drive medial curve extraction" algorithm
>> published by IJ.
>>
>> http://insight-journal.org/midas/handle.php?handle=1926/560
>>
>> I have a Linux box with gcc  version 4.1.2.
>> When compiling, I am getting error messages below.
>>
>> /home/dzyubak/Test/MedialCurve_IJCv20/itkAverageOutwardFluxImageFilter.h:84: 
>>
>> error: 'InputImageDimension' was not declared in this scope
>> /home/dzyubak/Test/MedialCurve_IJCv20/itkAverageOutwardFluxImageFilter.h:84: 
>>
>> error: 'OutputImageDimension' was not declared in this scope
>> /home/dzyubak/Test/MedialCurve_IJCv20/itkAverageOutwardFluxImageFilter.h:84: 
>>
>> error: template argument 1 is invalid
>> /home/dzyubak/Test/MedialCurve_IJCv20/itkAverageOutwardFluxImageFilter.h:84: 
>>
>> error: template argument 2 is invalid
>> /home/dzyubak/Test/MedialCurve_IJCv20/itkAverageOutwardFluxImageFilter.h:88: 
>>
>> error: to refer to a type member of a template parameter, use 'typename
>> TInputVectorPixelType::ValueType'
>> /home/dzyubak/Test/MedialCurve_IJCv20/itkAverageOutwardFluxImageFilter.h:90: 
>>
>> error: 'InputImageDimension' was not declared in this scope
>> /home/dzyubak/Test/MedialCurve_IJCv20/itkAverageOutwardFluxImageFilter.h:90: 
>>
>> error: template argument 2 is invalid
>> make[2]: *** [CMakeFiles/itkMedialCurveTest.dir/itkMedialCurveTest.o]
>> Error 1
>> make[1]: *** [CMakeFiles/itkMedialCurveTest.dir/all] Error 2
>> make: *** [all] Error 2
>>
>> How can I fix that?
>>
>> Thanks,
>> Alex
>>
>> _______________________________________________
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>> Insight-users at itk.org
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>
>
>
>
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