[Insight-users] itkEucledianDistance

[Jisung Kim]

Sorry, I forgot to mention another requirement for the
TVector type object. TVector class should have
ValueType typedef in it in addition to Length
constant.


--- kumar <MaKumartr@netscape.net> wrote:
> Hello Everyone
> I am wanting to compute the Eucledian Distance
> between two vectors and
> I thought I could use the class EucledianDistance
> from the itk::Statistics
> It is templated over TVector
> 
> So I tried to declare
> 
>
itk::Statistics::EuclideanDistance<vnl_vector<double>
> > Distance_Computer;
> 
> But that did not help me as the class TVector needs
> some functions to be 
> implemented
> by it  as seen in the following functions
> 
> itkStaticConstMacro(VectorLength, unsigned int,
> TVector::Length);
>   typedef typename TVector::ValueType ValueType ;
> 
> So the class needs a variable called Length and also
> a variable called 
> ValueType
> Since these are not there in vnl_vector this class
> cannot be used in 
> instantiating Eucledian class with vnl_vector
> 
> What could be done in  this case ( A new derived
> class could be created 
> , but that leads to lot of rework for just that
> case)
> 
> And also what shoudl be the structure of TVector
> that is wanted b 
> yEucledian class is not known easily
> 
> Any feedback on this is welcome
> 
> Thanks and Warm Regards
> Kumar
> 
> 
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=====
Jisung Kim
bahrahm@yahoo.com
106 Mason Farm Rd.
129 Radiology Research Lab., CB# 7515
Univ. of North Carolina at Chapel Hill
Chapel Hill, NC 27599-7515

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