DeletePaletteColorLut Method

Deletes all the elements that describe the "Palette Color Lookup Table".

Syntax

Visual Basic
C#
WinRT C#
Objective-C
Java
WinRT JavaScript
C++

public void DeletePaletteColorLut()

'Declaration
 
Public Sub DeletePaletteColorLut()

'Usage
 
Dim instance As DicomDataSet
 
instance.DeletePaletteColorLut()

public void DeletePaletteColorLut()

ObjectiveC Syntax

 function Leadtools.Dicom.DicomDataSet.DeletePaletteColorLut()

public:
void DeletePaletteColorLut();

Remarks

This method will delete all the elements defined under the "Palette Color Lookup Module", this includes:

Red Palette Color Lookup Table Descriptor (0028,1101),

Green Palette Color Lookup Table Descriptor (0028,1102),

Blue Palette Color Lookup Table Descriptor (0028,1103),

Palette Color Lookup Table UID (0028,1199),

Red Palette Color Lookup Table Data (0028,1201),

Green Palette Color Lookup Table Data (0028,1202),

Blue Palette Color Lookup Table Data (0028,1203),

Segmented Red Palette Color Lookup Table Data (0028,1221),

Segmented Green Palette Color Lookup Table Data (0028,1222),

Segmented Blue Palette Color Lookup Table Data (0028,1223)

Example

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Public Sub TestPaletteColorLut()
      Dim dicomFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "IMAGE3.dcm")
      'Make sure to initialize the DICOM engine, this needs to be done only once 
      'In the whole application
      DicomEngine.Startup()

      Dim ds As DicomDataSet = New DicomDataSet()
      Using (ds)
         Dim paletteColorLutSize As Integer = 65536
         'Load DICOM File
         ds.Load(dicomFileName, DicomDataSetLoadFlags.None)
         ds.DeletePaletteColorLut()
         Dim paletteColorLutAttributes As DicomPaletteColorLutAttributes = New DicomPaletteColorLutAttributes()
         ' Initialize Red Palette Color Lookup Table Descriptor (0028,1101) 
         paletteColorLutAttributes.RedFirstStoredPixelValueMapped = 0
         paletteColorLutAttributes.RedEntryBits = 16
         paletteColorLutAttributes.RedNumberOfEntries = paletteColorLutSize

         ' Initialize Green Palette Color Lookup Table Descriptor (0028,1102) 
         paletteColorLutAttributes.GreenFirstStoredPixelValueMapped = 0
         paletteColorLutAttributes.GreenEntryBits = 16
         paletteColorLutAttributes.GreenNumberOfEntries = paletteColorLutSize

         ' Initialize Blue Palette Color Lookup Table Descriptor (0028,1103) 
         paletteColorLutAttributes.BlueFirstStoredPixelValueMapped = 0
         paletteColorLutAttributes.BlueEntryBits = 16
         paletteColorLutAttributes.BlueNumberOfEntries = paletteColorLutSize

         ds.SetPaletteColorLutAttributes(paletteColorLutAttributes)

         Dim LutData As Integer() = New Integer(paletteColorLutSize - 1) {}
         Dim i As Integer = 0
         Do While i < paletteColorLutSize
            LutData(i) = i
            i += 1
         Loop

         ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Red)
         ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Green)
         ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Blue)

         Dim attributes As DicomPaletteColorLutAttributes = ds.GetPaletteColorLutAttributes()
         If Not attributes Is Nothing Then
            Debug.Assert(attributes.RedNumberOfEntries = paletteColorLutSize)
            Debug.Assert(attributes.GreenNumberOfEntries = paletteColorLutSize)
            Debug.Assert(attributes.BlueNumberOfEntries = paletteColorLutSize)

            Dim data As Integer() = ds.GetPaletteColorLutData(DicomPaletteColorLutType.Red)
            ' Do something with the data
         End If
         ds.Save(Path.Combine(LEAD_VARS.ImagesDir, "PLUT.dcm"), DicomDataSetSaveFlags.None)
      End Using
      DicomEngine.Shutdown()
   End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

public void TestPaletteColorLut()
   {
      string dicomFileName = Path.Combine(LEAD_VARS.ImagesDir, "IMAGE3.dcm");
      //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())
      {
         int paletteColorLutSize = 65536;
         //Load DICOM File
         ds.Load(dicomFileName, DicomDataSetLoadFlags.None);
         ds.DeletePaletteColorLut();
         DicomPaletteColorLutAttributes paletteColorLutAttributes = new DicomPaletteColorLutAttributes();
         // Initialize Red Palette Color Lookup Table Descriptor (0028,1101) 
         paletteColorLutAttributes.RedFirstStoredPixelValueMapped = 0;
         paletteColorLutAttributes.RedEntryBits = 16;
         paletteColorLutAttributes.RedNumberOfEntries = paletteColorLutSize;

         // Initialize Green Palette Color Lookup Table Descriptor (0028,1102) 
         paletteColorLutAttributes.GreenFirstStoredPixelValueMapped = 0;
         paletteColorLutAttributes.GreenEntryBits = 16;
         paletteColorLutAttributes.GreenNumberOfEntries = paletteColorLutSize;

         // Initialize Blue Palette Color Lookup Table Descriptor (0028,1103) 
         paletteColorLutAttributes.BlueFirstStoredPixelValueMapped = 0;
         paletteColorLutAttributes.BlueEntryBits = 16;
         paletteColorLutAttributes.BlueNumberOfEntries = paletteColorLutSize;

         ds.SetPaletteColorLutAttributes(paletteColorLutAttributes);

         int[] LutData = new int[paletteColorLutSize];
         for (int i = 0; i < paletteColorLutSize; i++)
         {
            LutData[i] = i;
         }

         ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Red);
         ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Green);
         ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Blue);

         DicomPaletteColorLutAttributes attributes = ds.GetPaletteColorLutAttributes();
         if (attributes != null)
         {
            Debug.Assert(attributes.RedNumberOfEntries == paletteColorLutSize);
            Debug.Assert(attributes.GreenNumberOfEntries == paletteColorLutSize);
            Debug.Assert(attributes.BlueNumberOfEntries == paletteColorLutSize);

            int[] data = ds.GetPaletteColorLutData(DicomPaletteColorLutType.Red);
            // Do something with the data
         }
         ds.Save(Path.Combine(LEAD_VARS.ImagesDir, "PLUT.dcm"), DicomDataSetSaveFlags.None);
      }
      DicomEngine.Shutdown();
   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

[TestMethod]
public async Task TestPaletteColorLut()
{
   //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())
   {
      int paletteColorLutSize = 65536;
      //Load DICOM File
      string filePath = @"Assets\IMAGE3.dcm";
      StorageFile file = await Tools.AppInstallFolder.GetFileAsync(filePath);
      ILeadStream stream = LeadStreamFactory.Create(file);
      bool success = await ds.LoadAsync(stream, DicomDataSetLoadFlags.None);
      Debug.Assert(success);
      ds.DeletePaletteColorLut();
      DicomPaletteColorLutAttributes paletteColorLutAttributes = new DicomPaletteColorLutAttributes();
      // Initialize Red Palette Color Lookup Table Descriptor (0028,1101) 
      paletteColorLutAttributes.RedFirstStoredPixelValueMapped = 0;
      paletteColorLutAttributes.RedEntryBits = 16;
      paletteColorLutAttributes.RedNumberOfEntries = paletteColorLutSize;
      // Initialize Green Palette Color Lookup Table Descriptor (0028,1102) 
      paletteColorLutAttributes.GreenFirstStoredPixelValueMapped = 0;
      paletteColorLutAttributes.GreenEntryBits = 16;
      paletteColorLutAttributes.GreenNumberOfEntries = paletteColorLutSize;

      // Initialize Blue Palette Color Lookup Table Descriptor (0028,1103) 
      paletteColorLutAttributes.BlueFirstStoredPixelValueMapped = 0;
      paletteColorLutAttributes.BlueEntryBits = 16;
      paletteColorLutAttributes.BlueNumberOfEntries = paletteColorLutSize;

      ds.SetPaletteColorLutAttributes(paletteColorLutAttributes);

      int[] LutData = new int[paletteColorLutSize];
      for (int i = 0; i < paletteColorLutSize; i++)
      {
         LutData[i] = i;
      }

      ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Red);
      ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Green);
      ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Blue);

      DicomPaletteColorLutAttributes attributes = ds.GetPaletteColorLutAttributes();
      if (attributes != null)
      {
         Debug.Assert(attributes.RedNumberOfEntries == paletteColorLutSize);
         Debug.Assert(attributes.GreenNumberOfEntries == paletteColorLutSize);
         Debug.Assert(attributes.BlueNumberOfEntries == paletteColorLutSize);

         int[] data = ds.GetPaletteColorLutData(DicomPaletteColorLutType.Red);
         // Do something with the data
      }
      string dicomFileNameOutput = "PLUT.dcm";
      StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(dicomFileNameOutput);
      ILeadStream streamOutput = LeadStreamFactory.Create(saveFile);
      using (IDisposable disposableOUT = streamOutput as IDisposable)
      {
         await ds.SaveAsync(streamOutput, DicomDataSetSaveFlags.None);
      }
   }
   DicomEngine.Shutdown();
}

public void TestPaletteColorLut(Stream dicomStream, Stream outputStream)
{
   //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())
   {
      int paletteColorLutSize = 65536;
      //Load DICOM File
      ds.Load(dicomStream, DicomDataSetLoadFlags.None);
      ds.DeletePaletteColorLut();
      DicomPaletteColorLutAttributes paletteColorLutAttributes = new DicomPaletteColorLutAttributes();
      // Initialize Red Palette Color Lookup Table Descriptor (0028,1101) 
      paletteColorLutAttributes.RedFirstStoredPixelValueMapped = 0;
      paletteColorLutAttributes.RedEntryBits = 16;
      paletteColorLutAttributes.RedNumberOfEntries = paletteColorLutSize;
      // Initialize Green Palette Color Lookup Table Descriptor (0028,1102) 
      paletteColorLutAttributes.GreenFirstStoredPixelValueMapped = 0;
      paletteColorLutAttributes.GreenEntryBits = 16;
      paletteColorLutAttributes.GreenNumberOfEntries = paletteColorLutSize;

      // Initialize Blue Palette Color Lookup Table Descriptor (0028,1103) 
      paletteColorLutAttributes.BlueFirstStoredPixelValueMapped = 0;
      paletteColorLutAttributes.BlueEntryBits = 16;
      paletteColorLutAttributes.BlueNumberOfEntries = paletteColorLutSize;

      ds.SetPaletteColorLutAttributes(paletteColorLutAttributes);

      int[] LutData = new int[paletteColorLutSize];
      for (int i = 0; i < paletteColorLutSize; i++)
      {
         LutData[i] = i;
      }

      ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Red);
      ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Green);
      ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Blue);

      DicomPaletteColorLutAttributes attributes = ds.GetPaletteColorLutAttributes();
      if (attributes != null)
      {
         Debug.Assert(attributes.RedNumberOfEntries == paletteColorLutSize);
         Debug.Assert(attributes.GreenNumberOfEntries == paletteColorLutSize);
         Debug.Assert(attributes.BlueNumberOfEntries == paletteColorLutSize);

         int[] data = ds.GetPaletteColorLutData(DicomPaletteColorLutType.Red);
         // Do something with the data
      }
      ds.Save(outputStream, DicomDataSetSaveFlags.None);
   }
   DicomEngine.Shutdown();
}

Public Sub TestPaletteColorLut(ByVal dicomStream As Stream, ByVal outputStream As Stream)
   'Make sure to initialize the DICOM engine, this needs to be done only once 
   'In the whole application
   DicomEngine.Startup()
   Using ds As DicomDataSet = New DicomDataSet()
      Dim paletteColorLutSize As Integer = 65536
      'Load DICOM File
      ds.Load(dicomStream, DicomDataSetLoadFlags.None)
      ds.DeletePaletteColorLut()
      Dim paletteColorLutAttributes As DicomPaletteColorLutAttributes = New DicomPaletteColorLutAttributes()
      ' Initialize Red Palette Color Lookup Table Descriptor (0028,1101) 
      paletteColorLutAttributes.RedFirstStoredPixelValueMapped = 0
      paletteColorLutAttributes.RedEntryBits = 16
      paletteColorLutAttributes.RedNumberOfEntries = paletteColorLutSize
      ' Initialize Green Palette Color Lookup Table Descriptor (0028,1102) 
      paletteColorLutAttributes.GreenFirstStoredPixelValueMapped = 0
      paletteColorLutAttributes.GreenEntryBits = 16
      paletteColorLutAttributes.GreenNumberOfEntries = paletteColorLutSize

      ' Initialize Blue Palette Color Lookup Table Descriptor (0028,1103) 
      paletteColorLutAttributes.BlueFirstStoredPixelValueMapped = 0
      paletteColorLutAttributes.BlueEntryBits = 16
      paletteColorLutAttributes.BlueNumberOfEntries = paletteColorLutSize

      ds.SetPaletteColorLutAttributes(paletteColorLutAttributes)

      Dim LutData As Integer() = New Integer(paletteColorLutSize - 1){}
      Dim i As Integer = 0
      Do While i < paletteColorLutSize
         LutData(i) = i
         i += 1
      Loop

      ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Red)
      ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Green)
      ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Blue)

      Dim attributes As DicomPaletteColorLutAttributes = ds.GetPaletteColorLutAttributes()
      If Not attributes Is Nothing Then
         Debug.Assert(attributes.RedNumberOfEntries = paletteColorLutSize)
         Debug.Assert(attributes.GreenNumberOfEntries = paletteColorLutSize)
         Debug.Assert(attributes.BlueNumberOfEntries = paletteColorLutSize)

         Dim data As Integer() = ds.GetPaletteColorLutData(DicomPaletteColorLutType.Red)
         ' Do something with the data
      End If
      ds.Save(outputStream, DicomDataSetSaveFlags.None)
   End Using
   DicomEngine.Shutdown()
End Sub

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

DicomDataSet Class
DicomDataSet Members
GetPaletteColorLutAttributes Method
GetPaletteColorLutData Method
SetPaletteColorLutAttributes Method
SetPaletteColorLutData Method