[Insight-developers] Problems with a couple auto-threshold filters

[Richard Beare]

I had been thinking about new filters. Is there precedent for option
masks? I'm happy to go either way at present.

On Thu, Nov 24, 2011 at 6:36 AM, Bradley Lowekamp
<blowekamp at mail.nih.gov> wrote:
> Hello,
> The mask feature would be VERY useful  to me as well. We tend to use 0 value
> pixels for boarders and outside ROI, so the mask paradigm would work very
> easily.
> About the design of this new feature, are you thinking about a new set of
> filters, or just adding an optional input to the base-class, and  choosing
> the correct image to histogram filter at run-time. While I am usually, an
> advocate for a filter just doing one thing well, I find the idea of an
> optional mask image input intuitive.
> Brad
>
> On Nov 17, 2011, at 5:59 PM, Richard Beare wrote:
>
> I'm hoping to have a look at a couple of issues with the
> autothresholding. Not sure when I'll get to it though. I'm also hoping
> to add some masked versions that exploit the masked histogram
> operation.
>
> 2011/11/18 Gaëtan Lehmann <gaetan.lehmann at jouy.inra.fr>:
>
> Hi Brad,
>
> Sorry I did have a chance to reply earlier.
>
> I don't have much time currently unfortunately. I'll try to fix those bug
>
> anyway.
>
> For the record, you said in a previous mail this is with the image
>
> RA-Short.nrrd and short as pixel type.
>
> Thanks,
>
> Gaëtan
>
>
> Le 17 nov. 11 à 15:29, Bradley Lowekamp a écrit :
>
> Hello,
>
> I began wrapping the new histogram based auto-theshold image filters, and
>
> ran into problems with a couple of filters.
>
> I am getting segfaults with the LiThresholdFilter. And then with the
>
> HuangThresholdFilter am not always getting the same results ( the md5 of the
>
> mask image changes between a 3 or 4 values on my laptop ).
>
> Thanks,
>
> Brad
>
>
> ========================================================
>
> Bradley Lowekamp
>
> Medical Science and Computing for
>
> Office of High Performance Computing and Communications
>
> National Library of Medicine
>
> blowekamp at mail.nih.gov
>
>
>
>
> --
>
> Gaëtan Lehmann
>
> Biologie du Développement et de la Reproduction
>
> INRA de Jouy-en-Josas (France)
>
> tel: +33 1 34 65 29 66    fax: 01 34 65 29 09
>
> http://mima2.jouy.inra.fr  http://www.itk.org
>
> http://www.bepo.fr
>
>
>
> ========================================================
>
> Bradley Lowekamp
>
> Medical Science and Computing for
>
> Office of High Performance Computing and Communications
>
> National Library of Medicine
>
> blowekamp at mail.nih.gov
>
>
>