<div dir="ltr">If you use vtkImageViewer2, you shouls use setSlice and setorientationTo methods to set the desired orientation adn the slice no after setting the setInput/setinputConnection.<br><br>have a look at this link<br>
<br><a href="http://devsample.org/index.php?option=com_content&task=view&id=47&Itemid=27">http://devsample.org/index.php?option=com_content&task=view&id=47&Itemid=27</a><br><br>Jothy<br><br><div class="gmail_quote">
On Thu, Jun 30, 2011 at 4:01 PM, mathilde.merle <span dir="ltr"><<a href="mailto:mathilde.merle@laposte.net">mathilde.merle@laposte.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<br>I use <i>vtkImageViewer2 :</i><br><i><br> // VIEWER TOOL : Pick a Pixel<br> // Picker to pick pixels<br> vtkSmartPointer<vtkPropPicker> propPicker = vtkSmartPointer<vtkPropPicker>::New();<br> propPicker->PickFromListOn();<br>
<br> // Give the picker a prop to pick<br> vtkSmartPointer<vtkImageViewer2> imageViewer = vtkSmartPointer<vtkImageViewer2>::New();<br> vtkImageActor* imageActor = imageViewer->GetImageActor();<br>
propPicker->AddPickList(imageActor);<br> <br> // disable interpolation, so we can see each pixel<br> imageActor->InterpolateOff();</i><br><br><blockquote style="padding-left:5px;margin-left:5px;border-left:2px solid #ff0000">
> Message du 30/06/11 15:54<br>> De : "Jothy" <br>> A : "mathilde.merle" <br>> Copie à : "vtkusers vtk org" <br>> Objet : Re: [vtkusers] Extract slices from a vtkMetaImageReader with vtkExtractVOI<br>
><br>> <p style="margin:0;padding:0" dir="ltr"></p><div class="im">Which image viewer are you using here?<br>> <br>> Jothy<br>> <br>> </div><p style="margin:0;padding:0" class="gmail_quote"></p><div class="im">
On Thu, Jun 30, 2011 at 3:41 PM, mathilde.merle <span><<a href="mailto:mathilde.merle@laposte.net" target="_blank">mathilde.merle@laposte.net</a>></span> wrote:<br>> </div><blockquote style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid #cccccc;padding-left:1ex">
<div class="im"><p style="margin:0pt;padding:0pt" align="left"><br>> </p><br>> Hello,<br>> <br>> I'm trying to extract slices from a vtkImagedata sequence and then display it. <br>> <br>> I tryed with vtkImageReslice and then vtkextractVOI, but it don't work. The image displayed is always the same even if I change 'slice_nb'. <br>
> <br>> How can I do ?<br>> <br>> My code :<br>> </div><i><br><div class="im">> int* dims = reader->GetOutput()->GetDimensions();<br>> <br>> // extract slice<br>> <br>> <b>int slice_nb = 0;</b><br>
> <br></div>> <b>vtkSmartPointer extractVOI = vtkSmartPointer::New();<div class="im"><br>> extractVOI->SetInputConnection(reader->GetOutputPort());<br>> extractVOI->SetVOI(0,dims[0],0,dims[1], slice_nb, slice_nb); //extract first image<br>
> extractVOI->Update();</div></b><div class="im"><br>> <br>> vtkImageData* extracted = extractVOI->GetOutput();<br>> <br>> int* dims2 = extracted->GetDimensions();<br>> cout << "DimensionsExtracted = ";<br>
> for (int i=0; i<(int)(sizeof(dims2)/sizeof(int)+1); i++) { <br>> cout << dims2[i]<<", ";<br>> }<br>> cout << endl; // Get a good image dimension<br>> <br>
> // Visualize<br></div>> vtkSmartPointer renderWindowInteractor = vtkSmartPointer::New();<div class="im"><br>> imageViewer->SetInputConnection(<b>extractVOI->GetOutputPort() </b>);<br>> imageViewer->SetupInteractor( renderWindowInteractor );<br>
> imageViewer->SetSize( 600, 600 );<br>> <br>> vtkRenderer* renderer = imageViewer->GetRenderer();<br>> renderer->ResetCamera();<br>> renderer->GradientBackgroundOn();<br>> renderer->SetBackground(0,0,0);<br>
> renderer->SetBackground2(1,1,1);<br>> <br>> // Annotate the image with window/level and mouse over pixel information<br></div>> vtkSmartPointer cornerAnnotation = vtkSmartPointer::New();<div class="im">
<br>> cornerAnnotation->SetLinearFontScaleFactor( 2 );<br>> cornerAnnotation->SetNonlinearFontScaleFactor( 1 );<br>> cornerAnnotation->SetMaximumFontSize( 20 );<br>> cornerAnnotation->SetText( 0, "Off Image" );<br>
</div>> cornerAnnotation->SetText( 3, "\n" );<div class="im"><br>> cornerAnnotation->GetTextProperty()->SetColor( 1,0,0);<br>> <br>> imageViewer->GetRenderer()->AddViewProp( cornerAnnotation );<br>
> <br>> // Callback listens to MouseMoveEvents invoked by the interactor's style<br></div>> vtkSmartPointer callback = vtkSmartPointer::New();<div class="im"><br>> callback->SetViewer( imageViewer );<br>
> callback->SetAnnotation( cornerAnnotation );<br>> callback->SetPicker( propPicker );<br>> callback->SetOrigin( orgn[0], orgn[1], orgn[2]); // add the origin of the sequence into the class<br>
> <br>> // Events recognized <br>> vtkInteractorStyleImage* imageStyle = imageViewer->GetInteractorStyle();<br>> imageStyle->AddObserver( vtkCommand::MouseMoveEvent, callback );<br>> imageStyle->AddObserver( vtkCommand::LeftButtonReleaseEvent, callback );<br>
> <br>> renderWindowInteractor->Initialize();<br>> renderWindowInteractor->Start(); </div></i> <br><div class="im">> <br>> <br>> Thanks<br>> <font color="#888888"><br>> Mathilde<span style="color:#808000"></span><br>
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