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Threshold Property
See Also 
Leadtools.Medical3D Namespace > Medical3DSSD Class : Threshold Property



Gets or sets the (ISO threshold) for the mesh.

Syntax

Visual Basic (Declaration) 
Public Property Threshold As Integer
Visual Basic (Usage)Copy Code
Dim instance As Medical3DSSD
Dim value As Integer
 
instance.Threshold = value
 
value = instance.Threshold
C# 
public int Threshold {get; set;}
C++/CLI 
public:
property int Threshold {
   int get();
   void set (    int value);
}

Property Value

Value that represents the (ISO threshold) for the mesh.

Example

Visual BasicCopy Code
Public Sub Medical3DControlExample()
   Dim LoadObject As Medical3DLoadDICOMSeriesExamples = New Medical3DLoadDICOMSeriesExamples()
   Dim output As MedicalViewerSeriesManager = LoadObject.LoadJamesHead()

   Dim form As MainForm1 = New MainForm1(output)
   form.ShowDialog()
End Sub

' MainForm1 will be the owner of the medical viewer control.
Private Class MainForm1 : Inherits Form
   Private _medical3DControl As Medical3DControl

   Public Sub New(ByVal output As MedicalViewerSeriesManager)
      Dim _codecs As RasterCodecs = New RasterCodecs()
      Dim _image As RasterImage

      Dim codecsInformation As CodecsImageInfo

      _medical3DControl = New Medical3DControl()
      AddHandler SizeChanged, AddressOf MainForm1_SizeChanged
      AddHandler FormClosing, AddressOf MainForm1_FormClosing


      _medical3DControl.ObjectsContainer.Objects.Add(New Medical3DObject())

      Dim index As Integer

      codecsInformation = _codecs.GetInformation(CStr(output.Stacks(0).Items(0).Data), True)


      Dim width As Integer = codecsInformation.Width
      Dim height As Integer = codecsInformation.Height
      Dim depth As Integer = 256

      _medical3DControl.ObjectsContainer.Objects(0).MemoryEfficientInit(depth)

      index = 0
      Do While index < depth

         _image = _codecs.Load(CStr(output.Stacks(0).Items(index).Data), 0, CodecsLoadByteOrder.BgrOrGrayOrRomm, 1, 1)
         _medical3DControl.ObjectsContainer.Objects(0).MemoryEfficientSetFrame(_image, index, output.Stacks(0).Items(index).ImagePosition, True)
         index += 1
      Loop

      Dim spearator As String = ("\")
      Dim test As String() = output.Stacks(0).Items(0).ImageOrientation.Split(spearator.ToCharArray())
      Dim orientation As Single() = New Single(5) {}
      Dim i As Integer
      For i = 0 To 5
         orientation(i) = CSng(Convert.ToDouble(test(i)))
      Next i

      _medical3DControl.ObjectsContainer.Objects(0).MemoryEfficientEnd(orientation, output.Stacks(0).PixelSpacing)

      _medical3DControl.ObjectsContainer.VolumeType = Medical3DVolumeType.SSD

      ' set SSD Iso-Threshold at the middle volume density range
      Dim minimum As Integer = _medical3DControl.ObjectsContainer.Objects(0).MinimumValue
      Dim maximum As Integer = _medical3DControl.ObjectsContainer.Objects(0).MaximumValue
      _medical3DControl.ObjectsContainer.Objects(0).SSD.Threshold = (maximum + minimum) \ 2

      _medical3DControl.AddAction(MedicalViewerActionType.Rotate3DObject)
      _medical3DControl.SetAction(MedicalViewerActionType.Rotate3DObject, MedicalViewerMouseButtons.Left, MedicalViewerActionFlags.Active)

      Controls.Add(_medical3DControl)
   End Sub

   Private Sub MainForm1_FormClosing(ByVal sender As Object, ByVal e As FormClosingEventArgs)
      _medical3DControl.Dispose()
   End Sub

   Private Sub MainForm1_SizeChanged(ByVal sender As Object, ByVal e As EventArgs)
      If Not _medical3DControl Is Nothing Then
         _medical3DControl.Size = New Size(Me.ClientRectangle.Right, Me.ClientRectangle.Bottom)
      End If
   End Sub
End Class
C#Copy Code
public void Medical3DControlExample()
{
    Medical3DLoadDICOMSeriesExamples LoadObject = new Medical3DLoadDICOMSeriesExamples();
    MedicalViewerSeriesManager output = LoadObject.LoadJamesHead();

    MainForm1 form = new MainForm1(output);
    form.ShowDialog();
}

// MainForm1 will be the owner of the medical viewer control.
class MainForm1 : Form
{
    private Medical3DControl _medical3DControl;

    public MainForm1(MedicalViewerSeriesManager output)
    {
        RasterCodecs _codecs = new RasterCodecs();
        RasterImage _image;

        CodecsImageInfo codecsInformation;

        _medical3DControl = new Medical3DControl();
        this.SizeChanged += new EventHandler(MainForm1_SizeChanged);
        this.FormClosing += new FormClosingEventHandler(MainForm1_FormClosing);


        _medical3DControl.ObjectsContainer.Objects.Add(new Medical3DObject());

        int index;

        codecsInformation = _codecs.GetInformation((string)output.Stacks[0].Items[0].Data, true);


        int width = codecsInformation.Width;
        int height = codecsInformation.Height;
        int depth = 256;

        _medical3DControl.ObjectsContainer.Objects[0].MemoryEfficientInit(depth);

        for (index = 0; index < depth; index++)
        {

            _image = _codecs.Load((string)output.Stacks[0].Items[index].Data, 0, CodecsLoadByteOrder.BgrOrGrayOrRomm, 1, 1);
            _medical3DControl.ObjectsContainer.Objects[0].MemoryEfficientSetFrame(_image, index, output.Stacks[0].Items[index].ImagePosition, true);
        }

        string spearator = ("\\");
        string[] test = output.Stacks[0].Items[0].ImageOrientation.Split(spearator.ToCharArray());
        float[] orientation = new float[6];
        int i;
        for (i = 0; i < 6; i++)
        {
            orientation[i] = (float)Convert.ToDouble(test[i]);
        }

        _medical3DControl.ObjectsContainer.Objects[0].MemoryEfficientEnd(orientation, output.Stacks[0].PixelSpacing);

        _medical3DControl.ObjectsContainer.VolumeType = Medical3DVolumeType.SSD;

        // set SSD Iso-Threshold at the middle volume density range
        int minimum = _medical3DControl.ObjectsContainer.Objects[0].MinimumValue;
        int maximum = _medical3DControl.ObjectsContainer.Objects[0].MaximumValue;
        _medical3DControl.ObjectsContainer.Objects[0].SSD.Threshold = (maximum + minimum) / 2;

        _medical3DControl.AddAction(MedicalViewerActionType.Rotate3DObject);
        _medical3DControl.SetAction(MedicalViewerActionType.Rotate3DObject, MedicalViewerMouseButtons.Left, MedicalViewerActionFlags.Active);

        Controls.Add(_medical3DControl);
    }

    void MainForm1_FormClosing(object sender, FormClosingEventArgs e) { _medical3DControl.Dispose(); }

    void MainForm1_SizeChanged(object sender, EventArgs e)
    {
        if (_medical3DControl != null)
            _medical3DControl.Size = new Size(this.ClientRectangle.Right, this.ClientRectangle.Bottom);
    }
}

Remarks

  • The threshold value must be between the Medical3DObject.MinimumValue and Medical3DObject.MaximumValue.
  • Setting this value to a high number will make the resultant object display the hard tissue surface (for example, bones). Setting this value to a small value will make the resultant object display the soft tissues.

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7

See Also

Leadtools.Medical3D requires a Document or Medical toolkit license and unlock key. For more information, refer to: Imaging Pro/Document/Medical Features