[Mristudio-users] how to save the transformation matrix from a landmarker based transformation

[Yi Jiang]

Dear All,

I have tried to look through the online manual, but could not find the answer.

I tried to use the landmark based transformation (translation) from the main menu of the Landmarker window. The result is pretty good. However, I do not know how to save the transformation matrix. I tried to click the "save transformation matrix" button in the subject window. It seems two files was saved (.hdr? and .dat), but the file sizes were very small.

I also want to combine the transformation matrix from the landmark based translation with a AIR linear rigid, a AIR linear affine transformation, and a LDDMM matrix. Can I do that? I do not know if the transformation matrix from landmark based translation is a AIR format, or LDDMM raw format, or a LDDMM vtk format, which was asked in the combine matrix window.

The last question may be stupid: if there are defined landmarks in the memory, when I click on AIR linear or multichannel LDDMM (not from the main menu, but the buttons in the subject window), those landmarks were not used in transformation, right?

Thank you very much!

Best,
Yi


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