[Insight-users] itk::GradientDifferenceImageToImageMetric

[smythek at u.washington.edu]

Hi ITK,

I've gotten several emails from other people also curious on how to use this metric, but I haven't heard from anyone who knows how to do so!  Has anyone used this before?

Kathy


On Sun, 4 Jun 2006 smythek at u.washington.edu wrote:

> 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
>> 
>
>
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