External Email - Use Caution

Dear Bruce, I want to do the following, which source code should we use, and if so, can you send me a connection? We now have high and low resolution images, we want to resample each triangular surface mesh generated from low-resolution data onto the corresponding triangular surface mesh generated from high-resolution data and vice versa as follows: For every vertex in a low-resolution surface mesh we found the closest point on the high-resolution surface mesh (which typically fell within a triangle face of the mesh), and defined a point at that location on the high-resolution surface mesh (subsequently referred to as “sparse” meshes).What should we do to use freesurfer to do the above?

Thank you in advance look forward to your reply yours yujunjie ------------------ 原始邮件 ------------------ 发件人: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; 发送时间: 2018年11月7日(星期三) 凌晨2:42 收件人: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu;

主题: Re: [Freesurfer] Triangular mesh sampling problem

Hi yujunjie

we have code interenally that will do what you are asking, but no binary, sorry. You could download our source code and try to write your own, although it will be a bit of a project.

cheers Bruce On Tue, 6 Nov 2018, 1013364183 wrote:

    External Email - Use Caution        

Dear FS We now have high and low resolution images, we want to resample each triangular surface mesh generated from low-resolution data onto the corresponding triangular surface mesh generated from high-resolution data and vice versa as follows: For every vertex in a low-resolution surface mesh we found the closest point on the high-resolution surface mesh (which typically fell within a triangle face of the mesh), and defined a point at that location on the high-resolution surface mesh (subsequently referred to as ??sparse?? meshes).What should we do to use freesurfer to do the above?

Thanks in advance

yours yujunjie

_______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer

External Email - Use Caution

Dear Bruce, Thank you very much for your reply, I will try the method you said. But I still want to confirm that the operation in the implementation diagram (attached) must change the source code?

Thanks in advance yours yujunjie ------------------ 原始邮件 ------------------ 发件人: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; 发送时间: 2018年11月29日(星期四) 晚上11:46 收件人: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu;

主题: Re: [Freesurfer] ?????? Triangular mesh sampling problem

Hi yujunjie

there is source code in mrishash.c and mrisurf.c for this kind of thing, e.g. MHTfindClosestVertex. We don't have any complete code that will do exactly what you want though, so you will have to poke around in the source yourself I'm afraid.

cheers Bruce

On Thu, 29 Nov 2018, 1013364183 wrote:

    External Email - Use Caution        

Dear Bruce, I want to do the following, which source code should we use, and if so, can you send me a connection? We now have high and low resolution images, we want to resample each triangular surface mesh generated from low-resolution data onto the corresponding triangular surface mesh generated from high-resolution data and vice versa as follows: For every vertex in a low-resolution surface mesh we found the closest point on the high-resolution surface mesh (which typically fell within a triangle face of the mesh), and defined a point at that location on the high-resolution surface mesh (subsequently referred to as ??sparse?? meshes).What should we do to use freesurfer to do the above?

Thank you in advance look forward to your reply yours yujunjie ------------------ ???????? ------------------ ??????: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; ????????: 2018??11??7??(??????) ????2:42 ??????: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu; ????: Re: [Freesurfer] Triangular mesh sampling problem

Hi yujunjie

we have code interenally that will do what you are asking, but no binary, sorry. You could download our source code and try to write your own, although it will be a bit of a project.

cheers Bruce On Tue, 6 Nov 2018, 1013364183 wrote:

...

    External Email - Use Caution        

Dear FS We now have high and low resolution images, we want to resample each triangular surface mesh generated from low-resolution data onto the corresponding triangular surface mesh generated from high-resolution data and vice versa as follows: For every vertex in a low-resolution surface mesh

we

...

found the closest point on the high-resolution surface mesh (which typically fell within a

triangle

...

face of the mesh), and defined a point at that location on the high-resolution surface mesh (subsequently referred to as ??sparse?? meshes).What should we do to use freesurfer to do the

above?

...

Thanks in advance

yours yujunjie

---

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

External Email - Use Caution

Dear Bruce, I want to know if mri_surf2surf can map high resolution meshes to low resolution meshes or low resolution meshes to high resolution meshes. If so, what should be done specifically.

Thanks in advance yours yujunjie

------------------ 原始邮件 ------------------ 发件人: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; 发送时间: 2018年11月30日(星期五) 凌晨0:24 收件人: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu;

主题: Re: [Freesurfer] ?????? ?????? Triangular mesh sampling problem

yes, sorry, I can't think of a way to do it with existing binaries (maybe someone else can?). The only alternative I can think of is to use the various fsaverage meshes instead of the subject meshes. Then the "projection" becomes trivial as the lower res meshes are just the first N vertices in the higher res ones.

cheers Bruce

On Fri, 30 Nov 2018, 1013364183 wrote:

    External Email - Use Caution        

Dear Bruce, Thank you very much for your reply, I will try the method you said. But I still want to confirm that the operation in the implementation diagram (attached) must change the source code?

Thanks in advance yours yujunjie ------------------ ???????? ------------------ ??????: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; ????????: 2018??11??29??(??????) ????11:46 ??????: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu; ????: Re: [Freesurfer] ?????? Triangular mesh sampling problem

Hi yujunjie

there is source code in mrishash.c and mrisurf.c for this kind of thing, e.g. MHTfindClosestVertex. We don't have any complete code that will do exactly what you want though, so you will have to poke around in the source yourself I'm afraid.

cheers Bruce

On Thu, 29 Nov 2018, 1013364183 wrote:

...

    External Email - Use Caution        

Dear Bruce, I want to do the following, which source code should we use, and if so, can you send me a connection? We now have high and low resolution images, we want to resample each triangular surface mesh generated from low-resolution data onto the corresponding triangular surface mesh generated from high-resolution data and vice versa as follows: For every vertex in a low-resolution surface mesh we found the closest point on the high-resolution surface mesh (which typically fell within a triangle face of the mesh), and defined a point at that location on the high-resolution surface mesh (subsequently referred to as ??sparse?? meshes).What should we do to use freesurfer to do the above?

Thank you in advance look forward to your reply yours yujunjie ------------------ ???????? ------------------ ??????: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; ????????: 2018??11??7??(??????) ????2:42 ??????: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu; ????: Re: [Freesurfer] Triangular mesh sampling problem

Hi yujunjie

we have code interenally that will do what you are asking, but no binary, sorry. You could download our source code and try to write your own, although it will be a bit of a project.

cheers Bruce On Tue, 6 Nov 2018, 1013364183 wrote:

...

    External Email - Use Caution        

Dear FS We now have high and low resolution images, we want to resample each triangular surface mesh generated from low-resolution data onto the corresponding triangular surface mesh generated from high-resolution data and vice versa as follows: For every vertex in a low-resolution surface mesh

we

...

found the closest point on the high-resolution surface mesh (which typically fell within a

triangle

...

face of the mesh), and defined a point at that location on the high-resolution surface mesh (subsequently referred to as ??sparse?? meshes).What should we do to use freesurfer to do the

above?

...

Thanks in advance

yours yujunjie

---

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

External Email - Use Caution

Dear Bruce, My previous question may have some problems. We are studying your paper "Advantages of cortical surface reconstruction using submillimeter 7 T MEMPRAGE". I don't know how the process in Figure 2 is implemented. Can it be implemented by the freesurfer statement? We will be very grateful for any of your guidance.Figure 2 is added to the attachment.

Thank you in advance yujunjie

------------------ 原始邮件 ------------------ 发件人: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; 发送时间: 2018年11月30日(星期五) 凌晨0:24 收件人: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu;

主题: Re: [Freesurfer] ?????? ?????? Triangular mesh sampling problem

yes, sorry, I can't think of a way to do it with existing binaries (maybe someone else can?). The only alternative I can think of is to use the various fsaverage meshes instead of the subject meshes. Then the "projection" becomes trivial as the lower res meshes are just the first N vertices in the higher res ones.

cheers Bruce

On Fri, 30 Nov 2018, 1013364183 wrote:

    External Email - Use Caution        

Dear Bruce, Thank you very much for your reply, I will try the method you said. But I still want to confirm that the operation in the implementation diagram (attached) must change the source code?

Thanks in advance yours yujunjie ------------------ ???????? ------------------ ??????: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; ????????: 2018??11??29??(??????) ????11:46 ??????: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu; ????: Re: [Freesurfer] ?????? Triangular mesh sampling problem

Hi yujunjie

there is source code in mrishash.c and mrisurf.c for this kind of thing, e.g. MHTfindClosestVertex. We don't have any complete code that will do exactly what you want though, so you will have to poke around in the source yourself I'm afraid.

cheers Bruce

On Thu, 29 Nov 2018, 1013364183 wrote:

...

    External Email - Use Caution        

Dear Bruce, I want to do the following, which source code should we use, and if so, can you send me a connection? We now have high and low resolution images, we want to resample each triangular surface mesh generated from low-resolution data onto the corresponding triangular surface mesh generated from high-resolution data and vice versa as follows: For every vertex in a low-resolution surface mesh we found the closest point on the high-resolution surface mesh (which typically fell within a triangle face of the mesh), and defined a point at that location on the high-resolution surface mesh (subsequently referred to as ??sparse?? meshes).What should we do to use freesurfer to do the above?

Thank you in advance look forward to your reply yours yujunjie ------------------ ???????? ------------------ ??????: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; ????????: 2018??11??7??(??????) ????2:42 ??????: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu; ????: Re: [Freesurfer] Triangular mesh sampling problem

Hi yujunjie

we have code interenally that will do what you are asking, but no binary, sorry. You could download our source code and try to write your own, although it will be a bit of a project.

cheers Bruce On Tue, 6 Nov 2018, 1013364183 wrote:

...

    External Email - Use Caution        

Dear FS We now have high and low resolution images, we want to resample each triangular surface mesh generated from low-resolution data onto the corresponding triangular surface mesh generated from high-resolution data and vice versa as follows: For every vertex in a low-resolution surface mesh

we

...

found the closest point on the high-resolution surface mesh (which typically fell within a

triangle

...

face of the mesh), and defined a point at that location on the high-resolution surface mesh (subsequently referred to as ??sparse?? meshes).What should we do to use freesurfer to do the

above?

...

Thanks in advance

yours yujunjie

---

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

Hi yujunjie

can you explain what your goal is? I'm not really sure that I understand.

cheers Bruce On Sat, 1 Dec 2018, 1013364183 wrote:

External Email - Use Caution

Dear Bruce,   I use mri_surf2surf to map lh.thickness from high resolution to low resolution, and vice versa, can this statement implement the operation of Figure 2(a)?

yours yujunjie

------------------ ???????? ------------------ ??????: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; ????????: 2018??11??29??(??????) ????11:46 ??????: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu; ????: Re: [Freesurfer] ?????? Triangular mesh sampling problem

Hi yujunjie

there is source code in mrishash.c and mrisurf.c for this kind of thing, e.g. MHTfindClosestVertex. We don't have any complete code that will do exactly what you want though, so you will have to poke around in the source yourself I'm afraid.

cheers Bruce

On Thu, 29 Nov 2018, 1013364183 wrote:

...

External Email - Use Caution

Dear Bruce,   I want to do the following, which source code should we use, and if so, can you send me a connection?   We now have high and low resolution images, we want to resample each triangular surface mesh generated from low-resolution data onto the corresponding triangular surface mesh generated from high-resolution data and vice versa as follows: For every vertex in a low-resolution surface mesh

we

...

found the closest point on the high-resolution surface mesh (which typically fell within a

triangle

...

face of the mesh), and defined a point at that location on the high-resolution surface mesh (subsequently referred to as ??sparse?? meshes).What should we do to use freesurfer to do the

above?

...

Thank you in advance look forward to your reply yours yujunjie ------------------ ???????? ------------------ ??????: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; ????????: 2018??11??7??(??????) ????2:42 ??????: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu; ????: Re: [Freesurfer] Triangular mesh sampling problem

Hi yujunjie

we have code interenally that will do what you are asking, but no binary, sorry. You could download our source code and try to write your own, although it will be a bit of a project.

cheers Bruce On Tue, 6 Nov 2018, 1013364183 wrote:

...

External Email - Use Caution

Dear FS We now have high and low resolution images, we want to resample each triangular surface mesh generated from low-resolution data onto the corresponding triangular surface mesh generated from high-resolution data and vice versa as follows: For every vertex in a low-resolution surface

mesh

...

we

...

found the closest point on the high-resolution surface mesh (which typically fell within a

triangle

...

face of the mesh), and defined a point at that location on the high-resolution surface mesh (subsequently referred to as ??sparse?? meshes).What should we do to use freesurfer to do the

above?

...

Thanks in advance

yours yujunjie

---

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

External Email - Use Caution

Dear Bruce, How should I contact Jon (ccd)?Can mri_surf2surf really implement Figure 2(a)?

yours yujunjie

------------------ 原始邮件 ------------------ 发件人: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; 发送时间: 2018年12月2日(星期天) 凌晨0:07 收件人: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu;"Jonathan Polimeni"jonp@nmr.mgh.harvard.edu;

主题: Re: [Freesurfer] ?????? ?????? Triangular mesh sampling problem

hmm, maybe Jon (ccd) can help?

Bruce On Sat, 1 Dec 2018, 1013364183 wrote:

    External Email - Use Caution        

Dear Bruce, I use mri_surf2surf to map lh.thickness from high resolution to low resolution, and vice versa, can this statement implement the operation of Figure 2(a)?

yours yujunjie

------------------ ???????? ------------------ ??????: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; ????????: 2018??11??29??(??????) ????11:46 ??????: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu; ????: Re: [Freesurfer] ?????? Triangular mesh sampling problem

Hi yujunjie

there is source code in mrishash.c and mrisurf.c for this kind of thing, e.g. MHTfindClosestVertex. We don't have any complete code that will do exactly what you want though, so you will have to poke around in the source yourself I'm afraid.

cheers Bruce

On Thu, 29 Nov 2018, 1013364183 wrote:

...

    External Email - Use Caution        

Dear Bruce, I want to do the following, which source code should we use, and if so, can you send me a connection? We now have high and low resolution images, we want to resample each triangular surface mesh generated from low-resolution data onto the corresponding triangular surface mesh generated from high-resolution data and vice versa as follows: For every vertex in a low-resolution surface mesh

we

...

found the closest point on the high-resolution surface mesh (which typically fell within a

triangle

...

face of the mesh), and defined a point at that location on the high-resolution surface mesh (subsequently referred to as ??sparse?? meshes).What should we do to use freesurfer to do the

above?

...

Thank you in advance look forward to your reply yours yujunjie ------------------ ???????? ------------------ ??????: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; ????????: 2018??11??7??(??????) ????2:42 ??????: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu; ????: Re: [Freesurfer] Triangular mesh sampling problem

Hi yujunjie

we have code interenally that will do what you are asking, but no binary, sorry. You could download our source code and try to write your own, although it will be a bit of a project.

cheers Bruce On Tue, 6 Nov 2018, 1013364183 wrote:

...

    External Email - Use Caution        

Dear FS We now have high and low resolution images, we want to resample each triangular surface mesh generated from low-resolution data onto the corresponding triangular surface mesh generated from high-resolution data and vice versa as follows: For every vertex in a low-resolution surface

mesh

...

we

...

found the closest point on the high-resolution surface mesh (which typically fell within a

triangle

...

face of the mesh), and defined a point at that location on the high-resolution surface mesh (subsequently referred to as ??sparse?? meshes).What should we do to use freesurfer to do the

above?

...

Thanks in advance

yours yujunjie

---

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

External Email - Use Caution

Dear Bruce, Thank you very much for your help.

yours yujunjie

------------------ 原始邮件 ------------------ 发件人: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; 发送时间: 2018年12月2日(星期天) 凌晨0:28 收件人: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu; 抄送: "Jonathan Polimeni"jonp@nmr.mgh.harvard.edu; 主题: Re: [Freesurfer] ?????? ?????? ?????? Triangular mesh samplingproblem

Hi yujunjie

I included him in the previous (and this) email cheers Bruce On Sun, 2 Dec 2018, 1013364183 wrote:

    External Email - Use Caution        

Dear Bruce, How should I contact Jon (ccd)?Can mri_surf2surf really implement Figure 2(a)?

yours yujunjie

------------------ ???????? ------------------ ??????: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; ????????: 2018??12??2??(??????) ????0:07 ??????: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu;"Jonathan Polimeni"jonp@nmr.mgh.harvard.edu; ????: Re: [Freesurfer] ?????? ?????? Triangular mesh sampling problem

hmm, maybe Jon (ccd) can help?

Bruce On Sat, 1 Dec 2018, 1013364183 wrote:

...

    External Email - Use Caution        

Dear Bruce, I use mri_surf2surf to map lh.thickness from high resolution to low resolution, and vice versa, can this statement implement the operation of Figure 2(a)?

yours yujunjie

------------------ ???????? ------------------ ??????: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; ????????: 2018??11??29??(??????) ????11:46 ??????: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu; ????: Re: [Freesurfer] ?????? Triangular mesh sampling problem

Hi yujunjie

there is source code in mrishash.c and mrisurf.c for this kind of thing, e.g. MHTfindClosestVertex. We don't have any complete code that will do exactly what you want though, so you will have to poke around in the source yourself I'm afraid.

cheers Bruce

On Thu, 29 Nov 2018, 1013364183 wrote:

...

    External Email - Use Caution        

Dear Bruce, I want to do the following, which source code should we use, and if so, can you send me a connection? We now have high and low resolution images, we want to resample each triangular surface mesh generated from low-resolution data onto the corresponding triangular surface mesh generated from high-resolution data and vice versa as follows: For every vertex in a low-resolution surface

mesh

...

we

...

found the closest point on the high-resolution surface mesh (which typically fell within a

triangle

...

face of the mesh), and defined a point at that location on the high-resolution surface mesh (subsequently referred to as ??sparse?? meshes).What should we do to use freesurfer to do the

above?

...

Thank you in advance look forward to your reply yours yujunjie ------------------ ???????? ------------------ ??????: "Bruce Fischl"fischl@nmr.mgh.harvard.edu; ????????: 2018??11??7??(??????) ????2:42 ??????: "Freesurfer support list"freesurfer@nmr.mgh.harvard.edu; ????: Re: [Freesurfer] Triangular mesh sampling problem

Hi yujunjie

we have code interenally that will do what you are asking, but no binary, sorry. You could download our source code and try to write your own, although it will be a bit of a project.

cheers Bruce On Tue, 6 Nov 2018, 1013364183 wrote:

...

    External Email - Use Caution        

Dear FS We now have high and low resolution images, we want to resample each triangular surface mesh generated from low-resolution data onto the corresponding triangular surface mesh generated

from

...

...

...

high-resolution data and vice versa as follows: For every vertex in a low-resolution surface

mesh

...

we

...

found the closest point on the high-resolution surface mesh (which typically fell within a

triangle

...

face of the mesh), and defined a point at that location on the high-resolution surface mesh (subsequently referred to as ??sparse?? meshes).What should we do to use freesurfer to do the

above?

...

Thanks in advance

yours yujunjie

---

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

_______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer