Hi Rouhi

you can specify -norot to disable the initial rotation, but I wouldn't think that would be a good thing to do. To decrease distortion you would increase the strength of the metric term using -dist <float>. The default is 5, so you could try raising it to 10 or 15.

cheers
Bruce


On Fri, 12 Aug 2011, Rouhollah Abdollahi wrote:

Dear Bruce,

I have two questions.
I saw there are a lot of algorithms for mris_register. Which one are more 
precise and has less distortion on sulci pattern?
In initial alignment if I want to rotate the surface with -rotate [ alpha is 
(ear to ear) beta(Back to nose) ... ]. Am I right?. and if I want
that mris_register does not apply any rigid alignment after initial rotation 
what I have to do?

Thanks
Rouhi


On Thu, Aug 11, 2011 at 9:25 PM, Bruce Fischl <fis...@nmr.mgh.harvard.edu> 
wrote:
      What format is the attachment in?



On Aug 11, 2011, at 8:32 PM, Rouhollah Abdollahi <roohy...@gmail.com> wrote:

      Dear Bruce
      I checked the parcellation and look quiet OK. I attached two subjects , 
whcih subj_1 shows bad registration to fsaverage  and
      subj_2 shows the good registration.  I attached a file which compare two 
subjects according to sphere and sphere.reg. For the
      subj_1 , it has more figures to see how the parcellation is. 
      Thanks in advance

      Best
      Rouhi

      On Thu, Aug 11, 2011 at 10:48 AM, Bruce Fischl 
<fis...@nmr.mgh.harvard.edu> wrote:
            Hi Rouhi

            check the parcellations. If they are correct then the sphere.reg 
must be pretty accurate.

            cheers
            Bruce

On Thu, 11 Aug 2011, Rouhollah Abdollahi wrote:

      Dear Bruce

      I am working on Freesurfer 2 caret meshes. I am using   
FreeSurfer2CaretConvertAndRegisterClean.sh from Van Essen
      lab to create caret surfaces. when I look at my subjects'
      surfaces I can see in flat map in caret some of subjects sulci patterns 
are really distorted and I think it is
      related to sphere registration to fsaverage sphere. Beacsue
      the code is using sphere.reg to create all surfaces. for the subjects 
which I have less distortion on sulci pattern
      I have good data  (3 subjects) but for the (9 subjects)
      rest it seems they have problem to register to fsaverage. Is there any 
way that I can be sure that
      sphere.reg properly created? 

      Thank you very much

      Rouhi



      On Thu, Aug 11, 2011 at 4:37 AM, Bruce Fischl 
<fis...@nmr.mgh.harvard.edu> wrote:
           Try using fsaverage as the trgsubject
           Cheers
           Bruce



           On Aug 10, 2011, at 8:35 PM, Rouhollah Abdollahi 
<roohy...@gmail.com> wrote:

           > .V1_reg.label --regmethod surface --srcsurfreg sphere --trgsurfreg 
sphere.reg --hemi rh and when I tried to
      load the output label file on fsaverage surface
           like inflated one it shows a lot of point looks like it is not 
deformed properly. Is it related to
      registration to fsaverage or something esle? The question is
           how I can register the subjects surfaces to fsaverage surfaces? -- 
With Best Regards Rouhi
      --0015175120c69a3c6804aa2ffb81 Content-Type: text/html;
           charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Dear 
freesurfer experts
           >
           > I've tried to export my label file from individual space to 
fsaverage space by using this command:
           >
           > mri_label2label --srclabel rh.V1.label --srcsubject SUB1  
--trgsubject SUB1 --trglabel rh.V1_reg.
      > like it is not deformed properly.
      > Is it related to registration to fsaverage or something esle?
      > The question is how I can register the subjects surfaces to fsaverage


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      --
      With Best Regards
                 Rouhollah Abdollahi







--
With Best Regards
           Rouhollah Abdollahi



      <subject_1&2_side_view.odp>




--
With Best Regards
           Rouhollah Abdollahi




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