[Insight-users] GPU Calculation of Similarity Metrics

[Siavash Khallaghi]

> Hello,
>
> I have been using ITK 3.20 since 2008, and so far, I have avoided 
> upgrading to ITK 4.x for compatibility reasons. At the moment,  I am 
> running a rigid registration algorithm which uses 
> itk::CorrelationCoefficientHistogramImageToImageMetric.
>
> However, now I am at a stage that I need to speed-up the registration 
> to perform a lot of validations on my data sets. As a result, a slight 
> decrease in registration time for each individual experiment would 
> save me a lot of time. The bottleneck is the evaluation of the 
> image-to-image metric.
>
> I was wondering if the GPU computation of similarity metrics are 
> implemented in the latest ITK release. I looked at the wiki page, and 
> it seems that they are on a wish list: 
> http://www.itk.org/Wiki/ITK_Release_4/GPU_Acceleration/Wish_List#Image_Registration
>
> Could you please give me a time line for implementation of GPU metrics 
> in ITK? Basically, I do not want to reinvent the wheel if you guys are 
> close to finishing it.
>
> Siavash Khallaghi
>
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