The heat kernel sounds cool :). I'll check it out.
doug
Moo K. Chung wrote:
Hi all,
heat kernel smoothing and diffusion smoothing are supposed to give
the same solution to an isotropic heat equation on the cortex. the
difference is that heat kernel smoothing is simpler and there is no
n
Hi all,
heat kernel smoothing and diffusion smoothing are supposed to give
the same solution to an isotropic heat equation on the cortex. the
difference is that heat kernel smoothing is simpler and there is no
need to worry about the convergence. in diffusion smoothing, there
might be a ringing e
Hi Moo,
I actually implemented your diffusion smoother but could not quite get
it to work. It might have been related to the delta t parameter. Can
you give some guidance as to how to set it? What's the difference
between heat kernel smoothing and diffusion smoothing? btw, the link to
the "Dif
Dear Dr. Park,
I guess you are asking about freesurfer related surface smoothing.
Although I am not exactly sure how FreeSurfer is implmenting surface
smoothing, the general theory of suface-based smoothing and FWHM can
be found in two of my previous publications:
Chung, M.K., Worsley, K.J. , Pau
I am sorry. I made a mistake. It cannot be the centimeter unit.
Thanks.
Hae-Jeong
-Original Message-
From: Bruce Fischl [mailto:[EMAIL PROTECTED]
Sent: Monday, June 27, 2005 8:51 PM
To: Hae-Jeong Park, PhD
Cc: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] Question on FWHM in
: [Freesurfer] Question on FWHM in surface smoothing
Hi Hae-Jeong,
it is:
fwhm = (2.3*sqrt(niter*2/pi));
cheers,
Bruce
On Mon, 27 Jun 2005, Hae-Jeong Park, PhD
wrote:
> Hi,
>
> I would like to know the relationship between number of iteration in
surface
> smoothing and Gaussian kernel
Hi Hae-Jeong,
it is:
fwhm = (2.3*sqrt(niter*2/pi));
cheers,
Bruce
On Mon, 27 Jun 2005, Hae-Jeong Park, PhD
wrote:
Hi,
I would like to know the relationship between number of iteration in surface
smoothing and Gaussian kernel size in FWHM.
Would you give me some information on this? Tha
Hi,
I would like to know the relationship between number of
iteration in surface smoothing and Gaussian kernel size in FWHM.
Would you give me some information on this? Thank you in
advance.
Hae-Jeong
--
Hae-Jeong Park,
PhD
Assistant Professor, Department of Diagnostic Radiology,
Yonse
