[Insight-users] Contour generation based on binary images

[Dženan Zukić]

You should do an XOR of image with the mask and you will get regular binary
image which you can supply to marching cubes.


On Fri, Nov 9, 2012 at 3:00 PM, wydesenej <wydesenej at gmail.com> wrote:

> Hi.
>
> I have very specific image to describe structures in other image.
> Scalar value of each pixel consits of N-bits.
> Each bit represents some structure in image.
>
> Some examples:
> Pixel value = 11010000 -> means that this pixel is in stuctures 1, 2 and 4
> Pixel value = 01010000 -> means that this pixel is in stuctures 2 and 4
> Pixel value = 00001000 -> means that this pixel is in stucture 5
> Pixel value = 00000000 -> means that this pixel is not in any structure
> etc..
>
> Now I need to find contours of these structures.
> I need to use some contour filter. Problem is that filters uses as input
> scalar value for contour but i want to set "mask value".
>
> Example what i need:
>
> someFilter filter;
> filter->SetInput( mySpecialBinaryImage );
> filter->SetValueMask( 00100000 );    -> This function is not presented in
> filter. I want that this means: contour for me structure num3 ie. contour
> pixels with bit3 == 1.
> filter->Update();
> filter->GetOutput(); -> There i get my countour. (if image is 2d i got
> polygon if 3d i got surface...)
>
> Please any ideas how to do this stuff?
>
>
>
>
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