Hi Bruce,
I have applied one of his denoising algorithms on my high resolution datasets and also got very nice results. I used it on a single subject only, however, this could be beneficial for the upcoming hires pipeline to account for lower SNR. You can find his algorithms and publications here: https://sites.google.com/site/pierrickcoupe/softwares/denoising-for-medical-imaging/mri-denoising/mri-denoising-software Best, Falk Von: Bruce Fischl<mailto:fis...@nmr.mgh.harvard.edu> Gesendet: Freitag, 18. März 2016 19:43 An: Freesurfer support list<mailto:freesurfer@nmr.mgh.harvard.edu> Betreff: Re: [Freesurfer] Replacing / turning off denoising filter that's interesting. Is it open source? If so, can you point us at it? Maybe someone should compare it to the version I wrote 20 years ago :) On Fri, 18 Mar 2016, Mojmír Vinkler wrote: > Thanks! > Just FYI - we applied newer version of NLME from Pierrick Coupé before > running freesurfer and it greatly improved segmentation results. > > On Wed, Mar 16, 2016 at 3:47 PM Bruce Fischl <fis...@nmr.mgh.harvard.edu> > wrote: > Hi Mojmir > > we don't apply mri_nlfilter by default so there is no need to > turn it > off. You are welcome to try it out. It implement some nonlinear > filters > including what is now called nonlocal means as described in this > paper: > > http://ieeexplore.ieee.org/xpl/abstractAuthors.jsp?reload=true&arnumber=745 > 732 > > > cheers > Bruce > > On > Wed, 16 Mar 2016, Mojmír Vinkler wrote: > > > Hi, > > I was wondering if it's possible to replace or turn off your > denoising > > algorithm `mri_nlfilter`. We'd like to try different denoising > filters and > > compare how they influence segmentation performance. Right now > we're > > applying filter before running recon-all, but I fear that > applying your > > filter on already filtered image might degrade our analysis. > > > > I couldn't find any mention of mri_nlfilter besides this one > on > mailinglisthttps://mail.nmr.mgh.harvard.edu/pipermail//freesurfer/2011-October/020 > 762. > > html. I hope I didn't miss something anything. > > > > Thanks! > > Mojmir > > > >_______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > The information in this e-mail is intended only for the person > to whom it is > addressed. If you believe this e-mail was sent to you in error > and the e-mail > contains patient information, please contact the Partners > Compliance HelpLine at > http://www.partners.org/complianceline . If the e-mail was sent > to you in error > but does not contain patient information, please contact the > sender and properly > dispose of the e-mail. > > >
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