Hello freesurfer experts,
I am trying to export an inflated surface file and its overlay made in Freesurfer to a different software and it seems like the surface file needs to have a particular number of vertices, triangles and average # of neighbors to be compatible. I have used mris_decimate and mris_apply_reg to simplify the files but the commands are not specific enough. Is there a way to use those commands in such a way or simply do recon-all with these specified qualities?
Thank you for the help! Idil
Hi Idil
no, you can't specify all those things as they are defined by the topology of the surface. You could reduce the number of vertices, but then that will specify the edges and faces I expect. I'm not aware of any software taht lets you set all 3, and in fact you can't do all 3 as they need to satisfy the Euler Number relation. I guess you could in principle constrain 2 of them and have the 3rd be computed, but I don't think we have anything that will do that. sorry Bruce
On Mon, 31 Jul 2017, Yagmur Ozdemir 19 wrote:
Hello freesurfer experts,
I am trying to export an inflated surface file and its overlay made in Freesurfer to a different software and it seems like the surface file needs to have a particular number of vertices, triangles and average # of neighbors to be compatible. I have used mris_decimate and mris_apply_reg to simplify the files but the commands are not specific enough. Is there a way to use those commands in such a way or simply do recon-all with these specified qualities?
Thank you for the help! Idil
That makes sense, I still wanted to see if it is possible as the other software I am working with is not flexible.
Thank you! Idil ________________________________________ From: freesurfer-bounces@nmr.mgh.harvard.edu [freesurfer-bounces@nmr.mgh.harvard.edu] on behalf of Bruce Fischl [fischl@nmr.mgh.harvard.edu] Sent: Monday, July 31, 2017 6:48 PM To: Freesurfer support list Subject: Re: [Freesurfer] creating mesh with specifications
Hi Idil
no, you can't specify all those things as they are defined by the topology of the surface. You could reduce the number of vertices, but then that will specify the edges and faces I expect. I'm not aware of any software taht lets you set all 3, and in fact you can't do all 3 as they need to satisfy the Euler Number relation. I guess you could in principle constrain 2 of them and have the 3rd be computed, but I don't think we have anything that will do that. sorry Bruce
On Mon, 31 Jul 2017, Yagmur Ozdemir 19 wrote:
Hello freesurfer experts,
I am trying to export an inflated surface file and its overlay made in Freesurfer to a different software and it seems like the surface file needs to have a particular number of vertices, triangles and average # of neighbors to be compatible. I have used mris_decimate and mris_apply_reg to simplify the files but the commands are not specific enough. Is there a way to use those commands in such a way or simply do recon-all with these specified qualities?
Thank you for the help! Idil
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Yagmur Ozdemir 19