[vtkusers] an odd question about a plate which behind the actor

[Jothybasu K Selvaraj]

What I think is that the plate/thin slab appearing should be due to having
similar scalar value as the brain. Verify your dicom images using a dicom
viewer first and ensure that no plate are there in the original image.In
most of the medical images there appears patient rest uesd while scanning.

Jothy

On Thu, Apr 1, 2010 at 3:13 PM, 朱文武 <cool.wenwu at gmail.com> wrote:

>
> Dear all and David,
>      Thanks!   Firstly, I like to say sorry to david, it's my careless and
> mistake !   Now， i present my problem again ！ thanks for all any help !
>
> i also do not know why the image was disappeared.   I don't know whether
> the problem is related to the code. Because the same code can applied in
> other images(dataset), and the problem did not occurred. The related code
> was presented:
>
>    m_read = new vtkBMPReader();
>    skinExtractor = vtkMarchingCubes::New();//
>    skinNormals = vtkPolyDataNormals::New();//
>     triangle=vtkTriangleFilter::New();//
>     deci=vtkDecimatePro::New();/
>     smoother=vtkSmoothPolyDataFilter::New();//
>     skinMapper = vtkPolyDataMapper::New();//
>     skin = vtkActor::New();
>
>     this->m_read->Update();//read the bmp image
>     this->skinExtractor->SetInputConnection(m_read->GetOutputPort());
>     this->skinExtractor->SetValue(0,threshshold);
>     this->skinNormals->SetInputConnection(skinExtractor->GetOutputPort());/
>     this->skinNormals->SetFeatureAngle(60.0);//
>     this->triangle->SetInputConnection(skinNormals->GetOutputPort());//
>     this->deci->SetInputConnection(triangle->GetOutputPort());//
>     this->deci->SetTargetReduction(predigestion);//
>     this->deci->PreserveTopologyOn();//
>     this->smoother->SetInputConnection(deci->GetOutputPort());//
>     this->smoother->SetNumberOfIterations(smoothness);//
>     this->skinMapper->SetInputConnection(smoother->GetOutputPort());//
>     this->skinMapper->ScalarVisibilityOff();//
>     this->skinMapper->SetColorModeToMapScalars();
>     this->skinMapper->SetScalarRange(-1,1);
>
>
>     // Link the actor
>
>     this->skin->SetMapper(this->skinMapper);
>     this->skin->GetProperty()->SetColor(0.94,0.83,0.45);
>
>
> The image of the result:
>
> [image: 5.bmp]
>
> Thanks,
> WenWu
>
>
> On Wed, Mar 31, 2010 at 9:33 AM, David Doria <daviddoria+vtk at gmail.com<daviddoria%2Bvtk at gmail.com>
> > wrote:
>
>> On Tue, Mar 30, 2010 at 9:08 PM, 朱文武 <cool.wenwu at gmail.com> wrote:
>>
>>>
>>> Why no people help me ? Is this question too easy?
>>> I'm waiting!
>>>
>>
>> I didn't see an attached image that you said you sent. Also, please post
>> the smallest compilable code that demonstrates your problem.
>>
>> Thanks,
>>
>> David
>>
>
>
>
>
>
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