[ITK] [ITK-users] Registration taking longer to start in 4.7.1?

[Matias Montroull]

Disregard my message... For some reason, in this new version of ITK, if I
use the *NormalizeImageFilter*, tehn the images end up not overlapping.

Any clue what changed on that filter?

This is the code I had to remove:

typedef itk::NormalizeImageFilter<FixedImageType, InternalImageType>
NormalizeFilterType;
NormalizeFilterType::Pointer fixedNormalizer = NormalizeFilterType::New();
NormalizeFilterType::Pointer movingNormalizer = NormalizeFilterType::New();

fixedNormalizer->SetInput(fixedImageReader->GetOutput());
movingNormalizer->SetInput(movingImageReader->GetOutput());

typedef itk::DiscreteGaussianImageFilter<InternalImageType,
InternalImageType> GaussianFilterType;

GaussianFilterType::Pointer fixedSmoother = GaussianFilterType::New();
GaussianFilterType::Pointer movingSmoother = GaussianFilterType::New();

fixedSmoother->SetVariance(2.0);
movingSmoother->SetVariance(2.0);

fixedSmoother->SetInput(fixedNormalizer->GetOutput());
movingSmoother->SetInput(movingNormalizer->GetOutput());

registration->SetFixedImage(fixedSmoother->GetOutput());
registration->SetMovingImage(movingSmoother->GetOutput());

Thanks,

Matias.

On Sat, Apr 25, 2015 at 9:55 AM, Matias Montroull <matimontg at gmail.com>
wrote:

> Something I noticed is that version 4.7.1 may be more strict when it comes
> to origin.. My 2 images have different origins and that may be the reason.
>
> How can I set both images to have the same origin? is it safe or should I
> modify the parameters to make them overlap?
>
> Thanks,
>
> Matias.
>
> On Sat, Apr 25, 2015 at 9:12 AM, Matias Montroull <matimontg at gmail.com>
> wrote:
>
>> Hi,
>>
>> I downloaded and compiled version 4.7.1 of ITK and then recompiled a
>> source code I had for *3D* MuttualInformation Registration
>>
>> I noticed it now takes longer for registration to start and for some
>> reason I now get joint pdf sum med to zero (and I didn't change anything on
>> my code).
>>
>> Is there a known issue with the time it takes for registration to start?
>>
>> Thank you,
>>
>> Matias.
>>
>
>
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