Dear Prof. John Ashburner and SPM users,
Thank you very much for the information.
I am now trying to sophisticate the process and would like to change the parameters in DARTEL after all.
In the case of this process, actually there were some instances that the alignment qualities were desired to be improved a little bit in some areas for what ever the reasons.
So, I would like to change some parameters in the DARTEL procedures to improve the accuracy at the cost of time.
In that case, looking at the explanation of the DARTEL and from what I understand, it seems changing the parameters as follows increases the accuracy, am I correct? Or it is not so simple?
Outer Iterations->Outer iteration->Inter Iterations - increase as much as possible (in the practical amount of computation time) in each Outer Iteration (this is not clarified in the help and I am not sure)
Outer Iterations->Outer iteration->Time Steps - increase as much as possible in each Outer Iteration
Optimization Settings->LM Regularization - increase as much as possible until 1
Optimization Settings->Cycles - increase as much as possible
Optimization Settings->Iterations - increase as much as possible (this is not clarified in the help and I am not sure)
Some of these may go without saying and I am sorry if the questions are silly. But I do not understand what's going on in the processes, and am happy if you would tell me if I am wrong.
Best regards,
Hikaru Takeuchi
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