[Insight-users] Binary Morphology get output with 3 values ( 0 255 -32768)

[Gaëtan Lehmann]

Hi,

Have you set the background value, with SetBackgroundValue()?
Also, you may want to use BinaryMorphologicalClosingImageFilter¹,  
which already contain the code required to avoid the border effects.

Regards,

Gaëtan

¹ http://www.itk.org/Doxygen/html/classitk_1_1BinaryMorphologicalClosingImageFilter.html


Le 27 févr. 09 à 00:39, Siddharth Srivastava a écrit :

> Hi Baoyun,
>                  I think this is just a tag to represent unreachable  
> voxels / pixels
> (something like -Inf, = -2^(16-1) in your case )
> s.
>
> On Thu, Feb 26, 2009 at 2:31 PM, Baoyun Li <baoyun_li123 at yahoo.com>  
> wrote:
> Dear All:
>
> I am trying to perform some binary morphology opetration on image  
> with int type. My input is16 bit in with value 0 and 255.
>
> I set the binary morphology filter as suggested in the ITK example,  
> the difference is my input and output in int 16.
>
> When I tryied to morphology closing using Dilate and erod, I filled  
> the hole sucessfully. But I got -32768 value for the voxel between  
> the forgournd and background.
>
> Can sombody tell what is wrong?
>
> Thanks
>
> Baoyun
>
>
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-- 
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://voxel.jouy.inra.fr  http://www.mandriva.org
http://www.itk.org  http://www.clavier-dvorak.org

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