Hi,
I have a diffusion image in *.nii format. It include value from -1
until 1. X-values are in time 0, Y-values in time 1 and Z-values in
time 2.
I wanna turn X-values red, Y green and Z in blue. But when I use the
code here, all values in X,Y and Z time will be colored.
Thanks for help
Frank
<code>
MITK_INFO << "Performing diffusion image coloring.";
//turn X redr, Y green and Z blue
//transfer function from 0 till 1 of [r,g,b] = [0,0,0]
until [1,0,0] etc
//create new node,, hide the old one
//Create new DataNode
mitk::DataNode::Pointer dataNode = mitk::DataNode::New();
dataNode->SetData(image);
dataNode->SetName(node->GetName() + "_DiffusionColor");
//TimeSelector to get singe images x,y,z
mitk::ImageTimeSelector::Pointer selector =
mitk::ImageTimeSelector::New();
selector->SetInput(image);
//X-image from time 0
selector->SetTimeNr(0);//X
selector->Update();
mitk::Image::Pointer selectedImageX = mitk::Image::New();
selectedImageX->Initialize(selector->GetPic());
selectedImageX->SetPicVolume(selector->GetPic());
//selectedImageX->SetGeometry(selector->GetGeometry());//doesn't work
selectedImageX->Update();
//Y-image from time 1
selector->SetTimeNr(1);//Y
selector->Update();
mitk::Image::Pointer selectedImageY = mitk::Image::New();
selectedImageY->Initialize(selector->GetPic());
selectedImageY->SetPicVolume(selector->GetPic());
//selectedImageY->SetGeometry(selector->GetGeometry());//doesn't work
selectedImageY->Update();
//Z-image from time 2
selector->SetTimeNr(2);//Z
selector->Update();
mitk::Image::Pointer selectedImageZ = mitk::Image::New();
selectedImageZ->Initialize(selector->GetPic());
selectedImageZ->SetPicVolume(selector->GetPic());
//selectedImageZ->SetGeometry(selector->GetGeometry());//doesn't work
selectedImageZ->Update();
// Set the property "volumerendering" to the Boolean
value "true"
dataNode->SetProperty("volumerendering",
mitk::BoolProperty::New(true));
//dataNode->SetProperty("color", mitk::BoolProperty::New(true));
// Create a transfer function to assign optical
properties (color and opacity) to grey-values of the data
mitk::TransferFunction::Pointer tfX =
mitk::TransferFunction::New();
tfX->InitializeByMitkImage(selectedImageX);
// Set the color transfer function AddRGBPoint(double
x, double r, double g, double b)
tfX->GetColorTransferFunction()->AddRGBPoint ( -1.0,
1.0, 0.0, 0.0 );
tfX->GetColorTransferFunction()->AddRGBPoint ( 0.0,
0.0, 0.0, 0.0 );
// tfX->GetColorTransferFunction()->AddRGBPoint (
tfX->GetColorTransferFunction()->GetRange()[0], 0.0, 0.0, 0.0 );
tfX->GetColorTransferFunction()->AddRGBPoint ( 1.0,
1.0, 0.0, 0.0 );
// tfX->GetColorTransferFunction()->AddRGBPoint (
tfX->GetColorTransferFunction()->GetRange()[1], 1.0, 0.0, 0.0 );
// Set the piecewise opacity transfer function
AddPoint(double x, double y)
tfX->GetScalarOpacityFunction()->AddPoint ( -1.0, 1.0 );
tfX->GetScalarOpacityFunction()->AddPoint ( 0.0, 0.0 );
tfX->GetScalarOpacityFunction()->AddPoint ( 1.0, 1.0);
// tfX->GetScalarOpacityFunction()->AddPoint (
tfX->GetColorTransferFunction()->GetRange()[1], 1.0);
dataNode->SetProperty ( "TransferFunction",
mitk::TransferFunctionProperty::New(tfX.GetPointer()));
this->GetDefaultDataStorage()->Add(dataNode);//Should
add as child, but add as new node next to the others.
MITK_INFO << "Done.";
</code>
--
Frank Blaschke
Department for Biometry and Medical Informatics
web: http://www.med.uni-magdeburg.de/ibmi.html
phone: +49 391 67 135 51
office: building 2 / room 212
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