[ENH]: make segmentation inputs biasfwhm and samp (sampling distance) possible to change

[marcobarilari]

Is there an existing issue for this?

• I have searched the existing issues

New feature

add `opt.segment.biasfwhm = 60;` and `opt.segment.samplingDistance = 3;` as default and in `setBatchSegmentation` line 51 and 99


matlabbatch{end}.spm.spatial.preproc.channel.biasfwhm = opt.segment.biasfwhm;

[...]

matlabbatch{end}.spm.spatial.preproc.warp.samp = opt.segment.samplingDistance;

Unclear documentation

this goes into dev branch

see [this](https://surfer.nmr.mgh.harvard.edu/fswiki/HighFieldRecon) to see why it is useful

[Remi-Gau]

More options!!! Yay!!!

[marcobarilari]

If u agree I'll take care of this. Will try to identify all the files in which I need to add a new option 🤠.

[Remi-Gau]

go for it.

pointers:

• change the expected default in the tests folder (https://github.com/cpp-lln-lab/CPP_SPM/blob/dev/tests/utils/defaultOptions.m)
• then adapt the default option to match (https://github.com/cpp-lln-lab/CPP_SPM/blob/6a6b2d365fd702fa91c5ecdb1b759893ff5b0252/src/defaults/checkOptions.m#L107)