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GetLinearVoiLookupTableCommand Class
See Also  Members   Example 
Leadtools.ImageProcessing.Core Namespace : GetLinearVoiLookupTableCommand Class



Gets the window center and the window width, if the LookupTable stored inside the image is linear. If the LookupTable stored inside the image is not linear, the command will fail.

Syntax

Visual Basic (Declaration) 
Public Class GetLinearVoiLookupTableCommand 
   Inherits RasterCommand
   Implements IRasterCommand 
Visual Basic (Usage)Copy Code
Dim instance As GetLinearVoiLookupTableCommand
C# 
public class GetLinearVoiLookupTableCommand : RasterCommand, IRasterCommand 
C++/CLI 
public ref class GetLinearVoiLookupTableCommand : public RasterCommand, IRasterCommand 

Example

Run the GetLinearVoiLookupTableCommand on the image. and checks the linearity of the LookupTable and computes its window width and center by using this method.

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

   Dim leadImage As RasterImage = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Master.jpg")

   ' Prepare the command
   Dim command As GetLinearVoiLookupTableCommand = New GetLinearVoiLookupTableCommand
   command.Flags = GetLinearVoiLookupTableCommandFlags.None
   command.Run(leadImage)
   MessageBox.Show("Width = " + command.Width.ToString + "\n" + "Center = " + command.Center.ToString)

   RasterCodecs.Shutdown()
End Sub
C#Copy Code
public void GetLinearVoiLookupTableCommandExample() 
{ 
   // Load an image 
   RasterCodecs.Startup(); 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Master.jpg"); 
 
   // Prepare the command 
   GetLinearVoiLookupTableCommand command = new GetLinearVoiLookupTableCommand(); 
   command.Flags = GetLinearVoiLookupTableCommandFlags.None; 
   command.Run(image); 
   MessageBox.Show("Width  = " + command.Width + "\n" + "Center = " + command.Center); 
 
   RasterCodecs.Shutdown(); 
}

Remarks

  • Pay attention to lookup tables for signed images. The upper half should contain negative values and the lower half should contain positive values.
  • This class supports 12 and 16-bit grayscale images. Support for 12 and 16-bit grayscale images is available only in the Document/Medical toolkits.
  • This command does not support 32-bit grayscale images.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.Core.GetLinearVoiLookupTableCommand

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also