[Insight-users] smoothing filters

[Luis Ibanez]

Hi Zein,

The following are smoothing filters:

- DiscreteGaussian
http://www.itk.org/Insight/Doxygen/html/classitk_1_1DiscreteGaussianImageFilter.html

- RecursiveGaussian
http://www.itk.org/Insight/Doxygen/html/classitk_1_1RecursiveGaussianImageFilter.html

- MedianImageFilter
http://www.itk.org/Insight/Doxygen/html/classitk_1_1MedianImageFilter.html

The first two filters produce the convolution of the image
with a gaussian kernel. The first one performs an actual
convolution so you may not want to use it for with a large
kernel.

The second uses a IIR filter to approximate the convolution
with a Gaussian (and optionally its derivatives). Note that
this last filter runs only along a particular dimension selected
by the user.

The third filter replace each pixel with the statistical median
of its neighborhood. This is quite useful for salt & peeper noise.



Please let us know if you have further questions.

Thanks,


Luis

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Zein Salah wrote:
> Hi friends,
> 
>  
> 
> What smoothing filters are there in itk??
> 
> I need a non-edge-preserving filter.
> 
>  
> 
> Thanks,
> 
> Zein
> 
>  
> 
>  
> 
> ->8<------------->8<------------->8<------------->8<------------->8<------------->8<-
> Zein I. Salah
> Universität Tübingen, WSI-GRIS
> Sand 14
> 72076 Tübingen
> Email: salah@gris.uni-tuebingen.de <mailto:salah@gris.uni-tuebingen.de>  
> / zeinsalah@hotmail.com <mailto:zeinsalah@hotmail.com>
> Tel.: (07071) 29 75465 (GRIS) , (07071) 96 44 39 (privat)
>