[Insight-users] Extract 3D contour from mask image

[Sara Rolfe]

Thanks Sergio, I have the BinaryContourImageFilter working.  I also  
got the SimpleContourExtractorImageFilter to work by increasing the  
radius. I have one more related question.  I used:

> contour->SetFullyConnected(false); // true makes thicker contours

to get a thinner contour, but it still appears very thick.  Is there  
any way to get closer to a 1-pixel wide contour from a 3D binary image?

Thanks,

Sara


On Oct 8, 2010, at 12:19 AM, Sergio Vera wrote:

> Hi Sara
>
> As far as I know, SimpleContourExtractorImageFilter works OK in 3d  
> images. We have performed some simple test in the past days and it  
> worked. However, we finally use BinaryContourImageFilter as it seems  
> to be faster:
>
> typedef itk::BinaryContourImageFilter <ITKImgLabelType,  
> ITKImgLabelType> Contourizer;
> Contourizer::Pointer contour = Contourizer::New();
> contour->SetInput(img);
> contour->SetFullyConnected(false); // true makes thicker contours
> contour->SetBackgroundValue(0);
> contour->SetForegroundValue(255); // the value of your binary mask
> contour->Update()
>
> Regards
>
> On Fri, Oct 8, 2010 at 2:30 AM, Sara Rolfe  
> <smrolfe at u.washington.edu> wrote:
> Hello,
>
> I'm attempting to extract the 3d contour from a binary mask image.   
> I've done this successfully before using the  
> SimpleContourExtractorImageFilter, but in was in 2D.  Is there a  
> problem using this filter in 3D?  Or parameters that need to be  
> changed?  Also, if there are any examples that might help please  
> point me to them.
>
> Thanks,
> Sara
>
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> -- 
> Sergio Vera
>
>  Alma IT Systems
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