[Insight-users] Contour generation based on binary images

[Bill Lorensen]

After XORint the image, since the data will be a discrete value, you
should use DiscreteMarchingCubes.

On Sat, Nov 10, 2012 at 3:02 AM, Dženan Zukić <dzenanz at gmail.com> wrote:
> 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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>
>
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