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



Removes speckles from an image. Typically, this command is used to clean up scanned images (such as FAX images). This command is available in the Document/Medical Toolkits.

Syntax

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

Example

Run the DespeckleCommand on an image and removes speckles from it.

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

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

   ' Prepare the command
   Dim command As DespeckleCommand = New DespeckleCommand
   'Remove speckles from the image.

   command.Run(leadImage)

   RasterCodecs.Shutdown()
End Sub
C#Copy Code
public void DespeckleCommandExample() 
{ 
   // Load an image 
   RasterCodecs.Startup(); 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Clean.tif"); 
 
   // Prepare the command 
   DespeckleCommand command = new DespeckleCommand(); 
   //Remove speckles from the image. 
   command.Run(image); 
 
   RasterCodecs.Shutdown(); 
}

Remarks

  • This command removes 1-pixel speckles, and shrinks some larger speckles. Therefore, in some cases, larger speckles can be completely removed by running it more than once.
  • This command supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.
  • This command does not support 32-bit grayscale images.
For more information, refer to Removing Noise.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.Core.DespeckleCommand

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