how to get the affine flow!!!!

[anamazingclown]

Thank you very much for your work. I have a question and hope you can answer it？ I want to obtain the displacement field from an affine transformation. How can I get a 2D flow from mmtf['fwdtransforms'] so that I can use it as a input to a Spatial Transformer, such as the one in VoxelMorph?

I am looking forward to receiving your answer,Thanks!

[ntustison]

In ANTs, you can use antsApplyTransforms. Look at the second option

     -o, --output warpedOutputFileName
                  [warpedOutputFileName or compositeDisplacementField,<printOutCompositeWarpFile=0>]
                  Linear[genericAffineTransformFile,<calculateInverse=0>]
          One can either output the warped image or, if the boolean is set, one can print 
          out the displacement field based on the composite transform and the reference 
          image. A third option is to compose all affine transforms and (if boolean is 
          set) calculate its inverse which is then written to an ITK file. 

[anamazingclown]

Thank you for your response. However, if I am using warped_img = ants.apply_transforms(fixed=f_img, moving=m_img, transformlist=mmtf['fwdtransforms'], interpolator="linear"), how can I get the affine matrix?

[ntustison]

This is an ANTsPy question. Please close this issue here and open one over at that repo with your question.

[anamazingclown]

ok Thank you very much for your help. I apologize for bothering you again