[Insight-users] Easy way to find gradient of an image at a particular index?

[brian avants]

never a 2-liner unless you use simpleitk ....

typedef CentralDifferenceImageFunction<FixedImageType> GradientCalculatorType;
m_FixedImageGradientCalculator = GradientCalculatorType::New();
m_FixedImageGradientCalculator->SetInputImage( this->GetFixedImage() );
gradient = m_FixedImageGradientCalculator->EvaluateAtIndex( index );

brian




On Fri, Nov 30, 2012 at 4:14 PM, Cory Quammen <cquammen at cs.unc.edu> wrote:
> Hi all,
>
> I could dig in the documentation for this, but am hoping someone on the list
> just knows off the top of his or her head.
>
> I'd like to compute the gradient of a 3D image given an index. Is there a
> one- or two-liner to do this in ITK? I'd like to avoid computing the full
> gradient image.
>
> Thanks,
> Cory
>
> --
> Cory Quammen
> Research Associate
> Department of Computer Science
> The University of North Carolina at Chapel Hill
>
>
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