Hi all,
I've got an anatomical image and the FNIRT warp field (both coefficients from --cout and the field itself from --fout) that maps the MNI152 standard to it (I realize this is not the usual direction for these transformations, but it's useful for the project I'm working on to operate in the anatomical space). Using img2stdcoord, I have verified that this warp is satisfactory and the correct coordinates can be recovered.
However, I'm trying to transform a large number of coordinates (the vertices of a cortical surface mesh), and img2stdcoord is extremely slow, taking multiple seconds to transform one point, and many hours to deal with the ~300k points of the mesh. Is there a faster way to apply the warp to a list of coordinates (using img2stdcoord or other FSL tools)?
Best,
Arjun
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