[ITK] [ITK-users] SimpleITK and R demons_registration problem

[FWagner]

Hi Bradley,
I have tried casting to sitkFloat64, but the same error message :

 Error in f(...) : Exception in SITK - check warning messages In addition:
Warning message:
In f(...) :
  Exception thrown in SimpleITK TransformToDisplacementFieldFilter_Execute:
/tmp/RtmpE4PobR/devtools25774a9d4940/SimpleITK-SimpleITKRInstaller-5f821a0/SITK/Build/SimpleITK-build/Code/BasicFilters/src/sitkTransformToDisplacementFieldFilter.cxx:178:
sitk::ERROR: Unexpected error converting transform! Possible miss matching
dimensions!

do you have a code example of 2D registration involving two png in
simpleITK ? it could help me to test where the problem comes from

Cheers,

Fabien


2017-08-18 19:05 GMT-03:00 Lowekamp, Bradley (NIH/NLM/LHC) [C] [via ITK -
Users] <ml+s7n38644h75 at n7.nabble.com>:

> Have you tried casting to sitkFloat64?
>
> > On Aug 18, 2017, at 12:49 PM, FWagner <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=38644&i=0>> wrote:
> >
> > Hi,
> > I have some trouble using the demons_registration from
> > https://insightsoftwareconsortium.github.io/SimpleITK-Notebooks/
> R_html/66_Registration_Demons.html
> > I have tested the example and it work well. however when i used the
> function
> > demons_registration with two image .png that i have generated i have
> some
> > strange errors. See the R code and the error below
> >
> > # generate two image of a square slighty differents
> > library(raster)
> > library(imager)
> > r=raster(ncol=600,nrow=600)
> > r=setValues(r,1)
> > im1=as.cimg(r)
> > im1[200:300,200:300]=0
> > plot(im1)
> >
> > im2=as.cimg(r)
> > im2[210:320,210:320]=0
> > plot(im2)
> >
> > save.image(im1,"square1.png")
> > save.image(im2,"square2.png")
> >
> > library(SimpleITK)
> >
> > cntrl <- ReadImage("square1.png")
> > img1 = Cast(cntrl,"sitkFloat32")
> > img1
> >
> > cntrl <- ReadImage("square2.png")
> > img2 = Cast(cntrl,"sitkFloat32")
> > img2
> >
> > # the demons_registration function can be downloaded here :
> > https://insightsoftwareconsortium.github.io/SimpleITK-Notebooks/
> R_html/66_Registration_Demons.html
> >
> > tx <- demons_registration(fixed_image = img1, moving_image = img2)
> > Show Traceback
> >
> > Rerun with Debug
> > Error in f(...) : Exception in SITK - check warning messages In
> addition:
> > Warning message:
> > In f(...) :
> >  Exception thrown in SimpleITK TransformToDisplacementFieldFilter_Execute:
>
> > /tmp/RtmpE4PobR/devtools25774a9d4940/SimpleITK-SimpleITKRInstaller-
> 5f821a0/SITK/Build/SimpleITK-build/Code/BasicFilters/src/
> sitkTransformToDisplacementFieldFilter.cxx:178:
> > sitk::ERROR: Unexpected error converting transform! Possible miss
> matching
> > dimensions!
> >
> >
> > Does anyone have an idea of the problem ?
> >
> > Thank you very much,
> >
> >
> > Fabien
> >
> >
> >
> >
> > --
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