[vtkusers] Draw contour of segmentation in a vtkImage

[Sergio Vera]

Thanks David

I've made a few tests and it works perfectly. Indeed much better that my
awkward solution..

thanks

On Tue, Feb 10, 2015 at 5:55 PM, David Gobbi <david.gobbi at gmail.com> wrote:

> Hi Sergio,
>
> Here are some methods that can be used:
>
> 1) Use vtkCutter to convert the polydata into a 2D contour, and then use
> vtkTubeFilter to thicken the contour for better visibility.
>
> 2) Instead of vtkTubeFilter to thicken the contour, you can use
> vtkContourTriangulator to fill the contour.
>
> 3) Render the 3D polydata as a wireframe, so that you can see the image
> through the mesh.
>
>  - David
>
>
>
> On Tue, Feb 10, 2015 at 9:29 AM, Sergio Vera <sergio.vera at alma3d.com>
> wrote:
>
>> Dear vtk users
>>
>> I have a vtkImage with a CT and some segmentations as vtkPolyData,
>>
>> Currently I draw the vtkPolyData on top of the image but the image is
>> hidden by the meshes.
>> I would like to represent the segmentation as contours in the image.
>>
>> I have tried to use vtkPolyDataMapper with two slice planes to display
>> just a thin portion of the mesh but the result is subpar.
>>
>> Is there any better way to display my segmentations as (possibly filled
>> with a semitransparent color) a contour over the image?
>>
>> Best regards
>>
>


-- 
Sergio Vera

 Alma IT Systems
 C/ Vilana, 4B, 4º 1ª
 08022 Barcelona
 T. (+34) 932 380 592
 www.alma3d.com
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