AFNI Message Board

Dear AFNI users-

We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:

https://discuss.afni.nimh.nih.gov

Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.

The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.

Sincerely, AFNI HQ

History of AFNI updates  

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ziad
April 10, 2007 01:36PM
Hi Aaron,


This is a problem that occurs when you have high spatial frequency and too few iterations for the LB_FEM method. For another picture of the artifact see: [afni.nimh.nih.gov]

Also, if you like to see it grow, run the program with the -talk_suma flag.

At any rate, increase the number of iterations and this will go away. You can also use the HEAT method with about 100 iterations too. That method will not cause such artifacts.

Note that I am in the process of revamping SurfSmooth. It turns out the HEAT's approximation of the FWHM can be off. But I won't have these fixes ready for a while.

cheers,
-z
Subject Author Posted

problem with smoothing/std mesh

Aaron Goldman April 09, 2007 06:09PM

Re: problem with smoothing/std mesh

ziad April 10, 2007 01:36PM

Re: problem with smoothing/std mesh

Michael August 24, 2007 01:50PM

Re: problem with smoothing/std mesh

Ziad August 24, 2007 01:55PM

Re: problem with smoothing/std mesh

Michael August 24, 2007 02:06PM

Re: problem with smoothing/std mesh

Ziad August 28, 2007 11:35AM

Re: problem with smoothing/std mesh

Anthony August 30, 2007 01:13PM

Re: problem with smoothing/std mesh

Ziad August 30, 2007 03:59PM

Re: problem with smoothing/std mesh

Anthony October 01, 2007 05:11PM

Re: problem with smoothing/std mesh

Ziad October 12, 2007 12:13PM

Re: problem with smoothing/std mesh

Anthony October 15, 2007 11:25AM