Dear Mark
I am fascinated by the potential to choose various dofs.
Ideally, of course, I would like to be able to select any combination of
them.
Looking at the schedule files I believe to have found
the place to switch dofs on and of using "setoption paramsubset".
However, there is something going on with "optimise ..." where
I started to struggle. I couldn't find infos about that stuff in the
technical report either.
Do you see any chance for amateurs like me to create these
schedule files ourself, or do we need to "order" them from you?
If the latter is the case, my most urgent wishes would be
(in the order of urgency :)
1D distortion: 1 trans (y) + 1 scale(y) + 1 skew (y)
2D motion + 1D distortion: 1 rot (z) + 2 trans (x,y) + 1 scale(y) + 1
skew (y)
3D motion + 1D distortion: 3 rot + 3 trans + 1 scale(y) + 1 skew (y)
Cheers, Markus
Mark Jenkinson wrote:
>Dear Markus,
>
>Yes, FLIRT can do other 2D registrations, but they do require specific
>schedule files. I have recently (luckily) made some files for 3, 5 and 6
>DOF transformations in 2D. Note that the 2D version that is currently
>implemented is in fact 3 DOF, not 4.
>
>The degrees of freedom in these files are:
>3 dof = 1 x rotation + 2 x translation
>5 dof = 1 x rotation + 2 x translation + 2 x scaling
>6 dof = 1 x rotation + 2 x translation + 2 x scaling + 1 x skew
>
>I'll also try to make the 4 dof version (single global scaling) soon.
>
>The way use use these schedule files is like this:
>
>flirt -ref volR -in volI -omat volI_2_volR.mat -2D -schedule sch2D_6dof
>
>Note that you must use the -schedule flag *after* the -2D flag.
>
>The above three schedule files are attached to this email.
>
>All the best,
> Mark
>
>
>
>Markus Weiger wrote:
>
>>Hi Mark
>>
>>Is it possible to do a FLIRT registration that works
>>slice-wise (as the 2D option) but allows for more than
>>only 4 degrees of freedom?
>>
>>Markus
>>
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