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ApplyVoiLookupTableCommand Constructor(DicomLookupTableDescriptor,Int16[],VoiLookupTableCommandFlags)
See Also  Example
Leadtools.ImageProcessing.Core Namespace > ApplyVoiLookupTableCommand Class > ApplyVoiLookupTableCommand Constructor : ApplyVoiLookupTableCommand Constructor(DicomLookupTableDescriptor,Int16[],VoiLookupTableCommandFlags)



lookupTableDescriptor
Structure describing the LookupTable. The following members are used:
Value Meaning
FirstStoredPixelValueMapped Indicates the first index whose remapped value is stored in the LookupTable. All image display LookupTable entries which are less than this value will be remapped to LookupTable[0].
lookupTable
Array of short values which contains the lookup table. Its length determines the number of entries. All the pixels that are greater than FirstStoredPixelValueMapped + (LookupTable->Length) will be set to the last entry in the LookupTable (LookupTable[LookupTable->Length - 1]).
flags
Flags thst determine the behavior of this method. These flags can be OR-ed together.
Initializes a new ApplyVoiLookupTableCommand with explicit parameters. Supported in Silverlight, Windows Phone 7

Syntax

Visual Basic (Declaration) 
Public Function New( _
   ByVal lookupTableDescriptor As DicomLookupTableDescriptor, _
   ByVal lookupTable() As Short, _
   ByVal flags As VoiLookupTableCommandFlags _
)
Visual Basic (Usage)Copy Code
Dim lookupTableDescriptor As DicomLookupTableDescriptor
Dim lookupTable() As Short
Dim flags As VoiLookupTableCommandFlags
 
Dim instance As New ApplyVoiLookupTableCommand(lookupTableDescriptor, lookupTable, flags)
C# 
public ApplyVoiLookupTableCommand( 
   DicomLookupTableDescriptor lookupTableDescriptor,
   short[] lookupTable,
   VoiLookupTableCommandFlags flags
)
C++/CLI 
public:
ApplyVoiLookupTableCommand( 
   DicomLookupTableDescriptor^ lookupTableDescriptor,
   array<short>^ lookupTable,
   VoiLookupTableCommandFlags flags
)

Parameters

lookupTableDescriptor
Structure describing the LookupTable. The following members are used:
Value Meaning
FirstStoredPixelValueMapped Indicates the first index whose remapped value is stored in the LookupTable. All image display LookupTable entries which are less than this value will be remapped to LookupTable[0].
lookupTable
Array of short values which contains the lookup table. Its length determines the number of entries. All the pixels that are greater than FirstStoredPixelValueMapped + (LookupTable->Length) will be set to the last entry in the LookupTable (LookupTable[LookupTable->Length - 1]).
flags
Flags thst determine the behavior of this method. These flags can be OR-ed together.

Example

Run the Leadtools.ImageProcessing.Core.ApplyVoiLookupTableCommand on an image.

Visual BasicCopy Code
Public Sub ApplyVoiLookupTableConstructorExample()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE2.dcm"))

   ' Prepare the command
   Dim i As Integer
   Dim pLookupTable() As Short
   ReDim pLookupTable(65536)
   Dim LookupTableDescriptor As DicomLookupTableDescriptor = New DicomLookupTableDescriptor

   For i = 0 To 65536
      If (i < 30) Then
         pLookupTable(i) = 0
      Else
         If (i > 630) Then
            pLookupTable(i) = 630
         Else
            pLookupTable(i) = CType(i, Int16)
         End If
      End If
   Next

   ' fill the LookupTableDescriptor object
   LookupTableDescriptor.FirstStoredPixelValueMapped = 0
   LookupTableDescriptor.EntryBits = 16

   Dim command As ApplyVoiLookupTableCommand = New ApplyVoiLookupTableCommand(LookupTableDescriptor, pLookupTable, VoiLookupTableCommandFlags.None)
   command.Run(leadImage)

End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
C#Copy Code
public void ApplyVoiLookupTableConstructorExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

      RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE2.dcm"));

      // Prepare the command
      int i;
      short[] pLookupTable = new short[0x10000];
      DicomLookupTableDescriptor LookupTableDescriptor = new DicomLookupTableDescriptor();

      for(i = 0; i < 0x10000; i++)
      {
         if(i < 30)
         {
            pLookupTable[i] = 0;
         }
         else
            if(i > 630)
            pLookupTable[i] = 630;
         else
            pLookupTable[i] = (short)i;
      }

      // Fill the LookupTableDescriptor object
      LookupTableDescriptor.FirstStoredPixelValueMapped = 0;
      LookupTableDescriptor.EntryBits = 16;

      ApplyVoiLookupTableCommand command = new ApplyVoiLookupTableCommand(LookupTableDescriptor, pLookupTable, VoiLookupTableCommandFlags.None);
      command.Run(image);

   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
SilverlightCSharpCopy Code
public void ApplyVoiLookupTableConstructorExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   int i;
   short[] pLookupTable = new short[0x10000];
   DicomLookupTableDescriptor LookupTableDescriptor = new DicomLookupTableDescriptor();
   for(i = 0; i < 0x10000; i++)
   {
      if(i < 30)
      {
         pLookupTable[i] = 0;
      }
      else
         if(i > 630)
         pLookupTable[i] = 630;
      else
         pLookupTable[i] = (short)i;
   }

   // Fill the LookupTableDescriptor object
   LookupTableDescriptor.FirstStoredPixelValueMapped = 0;
   LookupTableDescriptor.EntryBits = 16;

   ApplyVoiLookupTableCommand command = new ApplyVoiLookupTableCommand(LookupTableDescriptor, pLookupTable, VoiLookupTableCommandFlags.None);
   command.Run(image);

   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}
SilverlightVBCopy Code
Public Sub ApplyVoiLookupTableConstructorExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim i As Integer
   Dim pLookupTable As Short() = New Short(&H10000 - 1){}
   Dim LookupTableDescriptor As DicomLookupTableDescriptor = New DicomLookupTableDescriptor()
   i = 0
   Do While i < &H10000
      If i < 30 Then
         pLookupTable(i) = 0
      Else
         If i > 630 Then
         pLookupTable(i) = 630
      Else
         pLookupTable(i) = CShort(i)
      End If
      End If
      i += 1
   Loop

   ' Fill the LookupTableDescriptor object
   LookupTableDescriptor.FirstStoredPixelValueMapped = 0
   LookupTableDescriptor.EntryBits = 16

   Dim command As ApplyVoiLookupTableCommand = New ApplyVoiLookupTableCommand(LookupTableDescriptor, pLookupTable, VoiLookupTableCommandFlags.None)
   command.Run(image)

   ' Save result image
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24)
   image.Dispose()
End Sub

Requirements

Target Platforms: Silverlight 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)

See Also