[Insight-users] trouble with cannyedgedetectectioniamgefilter

[valerie glatt]

dear miss or mister

I try to use your itkCannyEdgeDetectionImageFilter, and when i compile i 
have this 2 errors

  D:\glatt\src\Insight\Code\Numerics\vxl\vnl/vnl_matrix.h(443) : while 
compiling class-template member function 'void __thiscall 
itk::CannyEdgeDetectionImageFilter<class itk::Image<unsigned short,2,class 
itk::DefaultImageTraits<unsigned short,
2,class itk::ValarrayImageContainer<unsigned long,unsigned short> > >,class 
itk::Image<unsigned short,2,class itk::DefaultImageTraits<unsigned 
short,2,class itk::ValarrayImageContainer<unsigned long,unsigned short> > > 
 >::ThreadedCompute2ndDerivativ
ePos(const class itk::ImageRegion<2> &,int)'
D:\glatt\src\Insight\Code\BasicFilters\itkCannyEdgeDetectionImageFilter.txx(624) 
: error C2668: 'vnl_math_sqrt' : ambiguous call to overloaded function
        D:\glatt\src\Insight\Code\Numerics\vxl\vnl/vnl_matrix.h(443) : while 
compiling class-template member function 'void __thiscall 
itk::CannyEdgeDetectionImageFilter<class itk::Image<unsigned short,2,class 
itk::DefaultImageTraits<unsigned short,
2,class itk::ValarrayImageContainer<unsigned long,unsigned short> > >,class 
itk::Image<unsigned short,2,class itk::DefaultImageTraits<unsigned 
short,2,class itk::ValarrayImageContainer<unsigned long,unsigned short> > > 
 >::ThreadedCompute2ndDerivativ
ePos(const class itk::ImageRegion<2> &,int)'




I use the same code that in your example


   itk::CannyEdgeDetectionImageFilter<ImageType, ImageType>::Pointer 
cannyFilter
    = itk::CannyEdgeDetectionImageFilter<ImageType, ImageType>::New();

  cannyFilter->SetInput(m_Image);
  cannyFilter->SetVariance(m_Sigma);

  cannyFilter->Update();
  m_Image = cannyFilter->GetOutput();


and m_Sigma is a float[2] because i am in 2 dimension.
So can you told me what i have to do or if the trouble come from itk
thank you valerie glatt (from unc chapel hill)


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