ImageNormalize

VTKExamples/Java/ImageData/ImageNormalize


Description

For each point, vtkImageNormalize object normalizes the vector defined by the scalar components. If the magnitude of this vector is zero, the output vector is zero also.

Other Languages

See (Cxx), (Python)

Code

ImageNormalize.java

import vtk.vtkNativeLibrary;
import vtk.vtkRenderWindow;
import vtk.vtkRenderWindowInteractor;
import vtk.vtkRenderer;
import vtk.vtkImageSinusoidSource;
import vtk.vtkNamedColors;
import vtk.vtkImageNormalize;
import vtk.vtkImageCast;
import vtk.vtkImageActor;


public class ImageNormalize 
{
  // -----------------------------------------------------------------
  // Load VTK library and print which library was not properly loaded
  static 
  {
    if (!vtkNativeLibrary.LoadAllNativeLibraries()) 
    {
      for (vtkNativeLibrary lib : vtkNativeLibrary.values()) 
      {
        if (!lib.IsLoaded()) 
        {
          System.out.println(lib.GetLibraryName() + " not loaded");
        }
      }
    }
    vtkNativeLibrary.DisableOutputWindow(null);
  }
  // -----------------------------------------------------------------

  public static void main(String args[]) 
  {

    vtkNamedColors colors = new vtkNamedColors();

    double left_bkg[] = new double[]{0.6, 0.5, 0.4, 1.0};
    double right_bkg[] = new double[]{0.4, 0.5, 0.6, 1.0};

    colors.SetColor("bkgColor", left_bkg);
    colors.SetColor("boxColor", right_bkg);

    //  Create an image
    vtkImageSinusoidSource source = new vtkImageSinusoidSource();
    source.Update();

    vtkImageNormalize normalizeFilter = new vtkImageNormalize();

    normalizeFilter.SetInputConnection(source.GetOutputPort());
    normalizeFilter.Update();

    vtkImageCast inputCastFilter = new vtkImageCast();
    inputCastFilter.SetInputConnection(source.GetOutputPort());
    inputCastFilter.SetOutputScalarTypeToUnsignedChar();
    inputCastFilter.Update();

    vtkImageCast normalizeCastFilter = new vtkImageCast();
    normalizeCastFilter.SetInputConnection(normalizeFilter.GetOutputPort());
    normalizeCastFilter.SetOutputScalarTypeToUnsignedChar();
    normalizeCastFilter.Update();

    //  Create actors
    vtkImageActor inputActor = new vtkImageActor();
    inputActor.GetMapper().SetInputConnection(inputCastFilter.GetOutputPort());

    vtkImageActor normalizedActor = new vtkImageActor();
    normalizedActor.GetMapper().SetInputConnection(normalizeCastFilter.GetOutputPort());

    //  Create the render window and interactor.

    vtkRenderWindow renWin = new vtkRenderWindow();
    vtkRenderWindowInteractor iren = new vtkRenderWindowInteractor();
    iren.SetRenderWindow(renWin);

    //  Define viewport ranges
    // (xmin, ymin, xmax, ymax)
    double leftViewport[] = new double[] {0.0, 0.0, 0.5, 1.0};
    double rightViewport[] = new double[] {0.5, 0.0, 1.0, 1.0};


    //  Setup both renderers
    vtkRenderer leftRenderer = new vtkRenderer();
    renWin.AddRenderer(leftRenderer);
    leftRenderer.SetViewport(leftViewport);
    leftRenderer.SetBackground(left_bkg);

    vtkRenderer rightRenderer = new vtkRenderer();
    renWin.AddRenderer(rightRenderer);
    rightRenderer.SetViewport(rightViewport);
    rightRenderer.SetBackground(right_bkg);

    leftRenderer.AddActor(inputActor);
    rightRenderer.AddActor(normalizedActor);

    leftRenderer.ResetCamera();
    rightRenderer.ResetCamera();

    renWin.SetSize(600,300);
    renWin.Render();

    iren.Initialize();
    iren.Start();
  }
}