[vtkusers] 3D Rendering of an sliced object

[Sylvain Jaume]

Hi OnezerO,

Before your final examination, make these changes to your code:

// executing the filter
m_vtkImporter->Update();

// getting the extent of the input image
m_vtkImporter->GetWholeExtent( extent );

// creating the extent for an image that has one more 'slice'
// in the 6 directions around the input image

	extent[0]--;
	extent[1]++;
	extent[2]--;
	extent[3]++;
	extent[4]--;
	extent[5]++;

// creating the extended image, so the input image is padded with zeros
// i.e. black voxels
vtkImageConstantPad  *m_vtkConstant = vtkImageConstantPad::New();
m_vtkConstant->SetInput( m_vtkImporter->GetOutput() );
m_vtkConstant->SetOutputWholeExtent( extent );


Cheers,
Sylvain

OnezerO wrote:

>Can you explain me that uses of this "extent"? 
>Because if this get to work i have to present this in a final examination
>and i have to know how to works every part of the code
>Thanks
>
>-----Mensaje original-----
>De: Sylvain Jaume [mailto:sylvain.jaume at kitware.com] 
>Enviado el: Martes, 08 de Noviembre de 2005 13:41
>Para: OnezerO
>CC: vtkusers at vtk.org
>Asunto: Re: [vtkusers] 3D Rendering of an sliced object
>
>Hi OnezerO,
>
>Could you try the code I sent you in my previous email (see below)?
>
>Cheers,
>Sylvain
>
>OnezerO wrote:
>
>  
>
>>Dont work
>>
>>I did that:
>>ConnectPipelines(m_itkExporter , m_vtkImporter );
>>m_vtkImporter->Update();     
>>
>>vtkImageConstantPad  *m_vtkConstant = vtkImageConstantPad::New(); 
>>m_vtkConstant->SetInput( m_vtkImporter->GetOutput() );
>>
>>vtkContourFilter *m_vtkContour = vtkContourFilter::New(); 
>>m_vtkContour->SetInput( m_vtkConstant->GetOutput() );
>>
>>The 3d image obtained its equals to the previous one
>>
>>
>>You say i should try this extent thing ?
>>-----Mensaje original-----
>>De: Sylvain Jaume [mailto:sylvain.jaume at kitware.com]
>>Enviado el: Martes, 08 de Noviembre de 2005 13:06
>>Para: OnezerO
>>CC: vtkusers at vtk.org
>>Asunto: Re: [vtkusers] 3D Rendering of an sliced object
>>
>>Hi OnezerO,
>>
>>The filter vtkImageConstantPad is in the Imaging directory:
>>http://www.vtk.org/doc/nightly/html/classvtkImageConstantPad.html
>>
>>int extent[6];
>>image->GetWholeExtent( extent )
>>
>>extent[0]--;
>>extent[1]++;
>>extent[2]--;
>>extent[3]++;
>>extent[4]--;
>>extent[5]++;
>>
>>vtkImageConstantPad *constantPad = vtkImageConstantPad::New();
>>constantPad->SetInput(image);
>>constantPad->SetOutputWholeExtent(extent);
>>
>>vtkContourFilter *contourFilter = vtkContourFilter::New();
>>contourFilter->SetInput(constantPad->GetOutput());
>>
>>Cheers,
>>Sylvain
>>
>>OnezerO wrote:
>>
>> 
>>
>>    
>>
>>>i didnt find this filter :(
>>>
>>>-----Mensaje original-----
>>>De: Sylvain Jaume [mailto:sylvain.jaume at kitware.com]
>>>Enviado el: Martes, 08 de Noviembre de 2005 12:15
>>>Para: OnezerO
>>>CC: vtkusers at vtk.org
>>>Asunto: Re: [vtkusers] 3D Rendering of an sliced object
>>>
>>>Hi OnezerO,
>>>
>>>Did you use vtkConstantPadFilter before applying vtkContourFilter as 
>>>it was answered previously?
>>>
>>>Cheers,
>>>Sylvain
>>>
>>>OnezerO wrote:
>>>
>>>
>>>
>>>   
>>>
>>>      
>>>
>>>>Hello, i'm send this post again because i think that i dont explain 
>>>>my problem very well... I have a series of images that represents a 
>>>>3d figure, this images was preprocesing with itk i'm receiving it 
>>>>with a Importer from vtk, i pass the data throught a Contourfilter 
>>>>and then by a SmoothFilter, the resulting 3d images has openings 
>>>>upside and downside, i wanna close this holes... how i do it???
>>>>
>>>>Regards
>>>>
>>>>
>>>>---------------------------------------------------------------------
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>> 
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>>    
>>
>
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>  
>