Dear Andrea,
this sounds as if there is a problem when setting the geometry to the
image3d (or with updating the object/view afterwards). Maybe you can
compare your code to the class mitk::USCombinedModality
(https://phabricator.mitk.org/source/mitk/browse/develop/Modules/US/USNavigation/mitkUSCombinedModality.cpp).
In line 75 of this file the geometry of an US image is modified as well.
A difference here is that the method "SetIndexToWorldTransform" is used
instead of "SetIndexToWorldTransformByVtkMatrix". You can try to convert
your matrix to a mitk::AffineTransform3D before and then call the same
method as in the example. Beside that I would also check if the
object/view is updated after modification of the geometry.
Best,
Alfred
Am 06.07.2022 um 12:45 schrieb Andrea Roberti:
Dear Alfred,
thanks for your reply.
We tried also with a "custom" transform created ad-hoc
[...]
vtkTransform*transform=vtkTransform::New();
transform->SetInput(transfActual);
transform->RotateZ(-90);
transform->Translate(55,0,0);
TelemedTransf->GetData()->GetGeometry()->SetIndexToWorldTransformByVtkMatrix(transform->GetMatrix());
m_DataStorage->Add(TelemedTransform);
[...]
image3d->GetGeometry()->SetIndexToWorldTransformByVtkMatrix(TelemedTransform->GetVtkTransform()->GetMatrix());
std::cout<<"1-----TelemedTransform---------"<<std::endl;
for(inti=0;i<4;i++){
for(intj=0;j<4;j++){
std::cout<<TelemedTransform->GetVtkTransform()->GetMatrix()->GetElement(i,j)<<"";
}
std::cout<<std::endl;
}
std::cout<<"3-----image3d---------"<<std::endl;
for(inti=0;i<4;i++){
for(intj=0;j<4;j++){
std::cout<<
image3d->GetGeometry()->GetVtkTransform()->GetMatrix()->GetElement(i,j)<<"";
}
std::cout<<std::endl;
}
----------------------------------------------------------------------------
The prints are exactly the same .
But as we said in the first email if the image comes from the device
the transform is not applied but loaded with the API it works.
Thanks
Andrea
------------------------------------------------------------------------
*From:* Alfred Franz <a.fr...@dkfz-heidelberg.de>
*Sent:* Wednesday, July 6, 2022 7:56 AM
*To:* Andrea Roberti <andrea.robe...@univr.it>;
mitk-users@lists.sourceforge.net <mitk-users@lists.sourceforge.net>
*Cc:* Chiara Tenga <chiarate...@gmail.com>
*Subject:* Re: [mitk-users] Apply a transform to US Image
Dear Andrea,
did you check if the transform was correctly written to
"TelemedTransform"? I don't know the code you are using to communicate
with the device, but I would check this first.
If you are using the MITK classes for the Telemed device
(Modules\US\USHardwareTelemed), there is a known issue that the image
is not updated properly (see https://phabricator.mitk.org/T29131
<https://phabricator.mitk.org/T29131>).
Best,
Alfred
Am 05.07.2022 um 10:14 schrieb Andrea Roberti:
Hello everyone,
We would like to apply a transform to an image received in real time
from an Ultrasound machine that is a 2D Image.
We can apply the same transform to a .nrrd image (saved offline) and
we can see that the transform was applied correctly on the image.
This is the piece of code we are using:
[.........]
mitk::Convert2Dto3DImageFilter::PointermultiFilter2=mitk::Convert2Dto3DImageFilter::New();
mitk::Image::Pointerimage2d=dynamic_cast<mitk::Image*>(m_Node.at(i)->GetData());
multiFilter2->SetInput(image2d);
multiFilter2->Update();
mitk::Image::Pointerimage3d;
image3d=multiFilter2->GetOutput();
TelemedTransform->GetVtkTransform()->Update();
image3d->GetGeometry()->SetIndexToWorldTransformByVtkMatrix(TelemedTransform->GetVtkTransform()->GetMatrix());
[.........]
If the input is given from the US machine the variable "image2d" is like the
code we shared and the transform is not applied.
Otherwise we use the Load method from mitk::IOUtil and it works.
What could be the problem?
Thanks in advance,
Andrea
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