External Email - Use Caution Hi Ruopen and Bruce,
indeed I fixed the transform multiplication and now I am able to get the good coordinates. Thanks for your help! Best, Florent ----- Mail original ----- De: "Ruopeng Wang" <rpw...@nmr.mgh.harvard.edu> À: freesurfer@nmr.mgh.harvard.edu Envoyé: Vendredi 26 Octobre 2018 19:08:28 Objet: Re: [Freesurfer] Freeview coordinates Hi Florent, I'm not sure how you got -152, 73, -66. If you apply the matrix to (152, 66, 73, 1), you should get -24, -55, 62 Which matches what is shown in freeview. Best, Ruopeng On 10/26/2018 12:06 PM, k3...@free.fr wrote: External Email - Use Caution Hi Bruce, Thanks for the tip. When I run the command on 'lh.white' surface for example, I don't get an affine transform but a simpler one: vox2ras-tk: -1 0 0 128 0 0 1 -128 0 -1 0 128 0 0 0 1 So when I apply this transform to a pixel position (152, 66, 73) here is the result I get: -152, 73, -66 But the expected result provided in Freeview as TkRegRAS T1 is: -23.61, -55.02, 61.25 Which obviously involving an affine transform. Did I miss something? Thanks Cheers, Florent _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
