[Insight-users] ImageRegistration8.cxx

[Pablo Andres]

Hello everyone,

I needed to perform a 3D image registration and I tried the example
ImageRegistration8.cxx with the images: brainweb165a10f17.mha and
brainweb165a10f17Rot10Tx15.mha. Everything went well, however I got
different results (in versors X and Y) from those of ITK. Here you are:

               ITK Results                  My results
versor X       -6.03744e-5                  7.75913e-6
versor Y       5.91487e-6                   2.67549
versor Z       -0.0871932                   -0.0871658
Translation X  2.64659                      2.64226
Translation Y  -17.4637                     -17.3228
Translation Z  -0.00232496                  -0.00267556

Matrix
0.984795  0.173722   2.23132e-5           0.984804   0.173668   5.19535e-5
-0.173722 0.984795   1.19257e-4           -0.173668  0.984804   -2.01234e-5
-1.25621e-6  1.2132e-4    1               -5.46588e-5  1.0795e-5    1

Offset
-15.0105  -0.0067324  0.0110859           -15.0067  0.00269828  0.00107133


I would like to know why it happened, then I didn't change any parameter
and I thought I should have got similar results.

Thanks a lot for any suggestion.

Pablo