Support for inverse linear and non-linear transform

[grandjeanlab]

I have not find anywhere in the documentation information about estimated inverse transformations for non-linear fields.

I would like to perform template-to-image transforms based on the fields estimated with RegisterTwoVolumes during image-to-template transform. Is there a currently working solution to that, or could it be implemented?

I assume the affine matrix can be inverted using fsl's convert_xfm function

[wanderine]

Inverse non-linear fields are not supported at the moment, and I don't know how hard it would be to implement.