Gets the number of overlays in the Data Set.
Syntax
| Visual Basic (Declaration) | |
|---|
Public ReadOnly Property OverlayCount As Integer |
| Visual Basic (Usage) |  Copy Code |
|---|
Dim instance As DicomDataSet
Dim value As Integer
value = instance.OverlayCount
|
| C# | |
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public int OverlayCount {get;} |
| C++/CLI | |
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public:
property int OverlayCount {
int get();
} |
Return Value
The number of overlays in the Data Set.
Example
This example will read a DICOM dataset and update its overlay attributes and overlay image.
| Visual Basic | Copy Code |
|---|
Public Sub TestOverlay()
Dim dicomFileName As String = LeadtoolsExamples.Common.ImagesPath.Path + "Overlay.dic"
DicomEngine.Startup()
Dim ds As DicomDataSet = New DicomDataSet()
Using (ds)
ds.Load(dicomFileName, DicomDataSetLoadFlags.None)
If ds.OverlayCount > 0 Then
Dim attributes As RasterOverlayAttributes = ds.GetOverlayAttributes(0)
If Not attributes Is Nothing Then
Dim overlayImage As RasterImage = ds.GetOverlayImage(0)
If Not overlayImage Is Nothing Then
Dim ds1 As DicomDataSet = New DicomDataSet()
Using (ds1)
ds1.Initialize(DicomClassType.DXImageStoragePresentation, DicomDataSetInitializeType.ExplicitVRLittleEndian)
ds1.SetOverlayAttributes(0, attributes, DicomSetOverlayFlags.None)
ds1.SetOverlayImage(0, overlayImage)
ds1.Save(LeadtoolsExamples.Common.ImagesPath.Path + "NewOverlay.dcm", DicomDataSetSaveFlags.None)
End Using
End If
End If
End If
End Using
DicomEngine.Shutdown()
End Sub |
| C# | Copy Code |
|---|
public void TestOverlay()
{
string dicomFileName = LeadtoolsExamples.Common.ImagesPath.Path + "Overlay.dic";
//Make sure to initialize the DICOM engine, this needs to be done only once
//In the whole application
DicomEngine.Startup();
using (DicomDataSet ds = new DicomDataSet())
{
//Load DICOM File
ds.Load(dicomFileName, DicomDataSetLoadFlags.None);
if (ds.OverlayCount > 0)
{
RasterOverlayAttributes attributes = ds.GetOverlayAttributes(0);
if (attributes != null)
{
// We can call in here methods like GetOverlayGroupNumber, IsOverlayInDataset
// and GetOverlayActivationLayer to get some further infromation about the overlay
//Let's get the overlay Image, If RasterOverlayAttributes.NumFramesInOverlay
//Is greater than 1 we can call GetOverlayImages to extract all the frames
RasterImage overlayImage = ds.GetOverlayImage(0);
if (overlayImage != null)
{
using (DicomDataSet ds1 = new DicomDataSet())
{
ds1.Initialize(DicomClassType.DXImageStoragePresentation, DicomDataSetInitializeType.ExplicitVRLittleEndian);
ds1.SetOverlayAttributes(0, attributes, DicomSetOverlayFlags.None);
ds1.SetOverlayImage(0, overlayImage);//We can call SetOverlayImages if the overlay has more than one frame
ds1.Save(LeadtoolsExamples.Common.ImagesPath.Path + "NewOverlay.dcm", DicomDataSetSaveFlags.None);
}
}
}
}
}
DicomEngine.Shutdown();
} |
Remarks
Requirements
Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family
See Also
