[Insight-users] itk::GradientDifferenceImageToImageMetric

[smythek at u.washington.edu]

Hi ITK,

I tried to follow the test example of the GradientDifference metric (after just trying to plug it in where I had the NormalizedCorrelation and getting metric values of INF all the time), but it won't run: I get an access violation reading error at the line:

metric->GetValueAndDerivative (parameters, value, derivatives);

I really just want to use the metric in my registration;  can anyone tell me how it should be integrated??

Kathy

On Fri, 2 Jun 2006, k s wrote:

> Hi ITK,
>
> I have registered images using NormalizedCorrelationImagetoImageMetric, and
> now I'd like to try this instead.  But I don't know how to use it.  Does
> anyone know the parameters of the itk::GradientDifferenceImageToImageMetric
> I need to set, and is its place in the imageRegistrationMethod any different
> than how I'd use the NormalizedCorrelation?
>
> Thanks!
>
> Kathy
>