Hi everyone,
i'm trying to compare 2 binary images so here's what i'm doing :
first I mulitply each of them by a coefficient ( 10 and 100 ). Then I add
them so I get an output image which has pixel values in {0,10,100,110}.
Next i want to apply a color for each pixel value.
But the problem comes with my LookUpTable, it only shows blue and green
colors -> 0 and 10 are printed in blue and 100 and 110 are printed in
green. Here's my code :
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
vtkSmartPointer<vtkLookupTable> lut_v =
vtkSmartPointer<vtkLookupTable>::New();
// lut_v->SetNumberOfTableValues(111);
lut_v->SetNumberOfColors(111);
lut_v->SetTableValue(0, 0, 0, 1, 1.0); // blue // TRUE NEGATIVE
lut_v->SetTableValue(10, 1, 1, 0, 1.0); // yellow // FALSE NEGATIVE
lut_v->SetTableValue(100, 1, 0, 1, 1.0); // magenta // FALSE POSITIVE
lut_v->SetTableValue(110, 0, 1, 0, 1.0); // green // TRUE POSITIVE
lut_v->Build();
mitk::LookupTable::Pointer lut_m = mitk::LookupTable::New();
lut_m->SetVtkLookupTable(lut_v);
lut_m->Update();
mitk::LookupTableProperty::Pointer lut_prop =
mitk::LookupTableProperty::New(lut_m);
/* Here node contains my output image */
node->SetProperty("LookupTable", lut_prop);
node->SetBoolProperty("scalar visibility", true);
node->SetFloatProperty("ScalarsRangeMaximum", 110.0);
node->SetBoolProperty("color mode", true);
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
i've also tried to put SetNumberOfColors(4) and then to put the indexes
from 0 to 3 for the different colors but the result was the same.
so if anyone has an idea why it doesn't work i'd be glad to learn from my
mistakes.
Regards,
Thomas
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