[Insight-users] Possible bug in Label Overlay Filter

[Gaëtan Lehmann]

Hi,

Could you provide a small code to reproduce that problem?

Thanks,

Gaëtan


Le 28 mars 11 à 16:48, Maria Alejandra Zuluaga Valencia a écrit :

> Hello again,
>
> Earlier this morning I posted a message on problems with  
> ExtractImageFilter (which I put at the end of the message for follow- 
> up purposes).
> I've performed several tests to find the cause of my error. Since,  
> the input images I was using came from  itkLabelOverlayImageFilter,  
> right now I am under the hypothesis that the latter is the one that  
> really causes the problem when 3D images are used.
>
> In my pipeline I am able of creating a 3D RGB image (mhd/raw format)  
> and I can visualize it without any problem. However, once I try to  
> do something with this resulting image I get problems.
>
> At the beginning I was using ExtractImageFilter to obtain a single  
> slice from the overlaid image. Since it did not work, I performed  
> the simplest operation which consisted in reading  from disk the 3D  
> RGB image and then writing it again. In every case, the resulting  
> image contains only noise. If I do this same test with a 2D overlaid  
> image, it works perfectly.
>
> Has anyone experienced the same problem? is there anyway to solve it?
>
> thanks in advance,
>
> Maria A. Zuluaga
>
> Maybe there are some problems regarding R G B channel interleaving/ 
> separation?
>
> HTH
>
> On Mon, Mar 28, 2011 at 12:05, Maria Alejandra Zuluaga Valencia <mariazulv at yahoo.es 
> > wrote:
> Hi,
> I am using the ExtractImageFilter to obtain a 2D slice from a 3D  
> volume. I used the example from the user's guide and it works OK.  
> However, when I change the pixel type to RGB (I want to do this for  
> some overlay images) it fails. The resulting slice is completely  
> noisy. Any idea?
>
> Thanks in advance,
>
> Maria A. Zuluaga
>
>
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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.itk.org
http://www.mandriva.org  http://www.bepo.fr

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