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AntiAliasingCommand Class
See Also  Members   Example 
Leadtools.ImageProcessing.Effects Namespace : AntiAliasingCommand Class




Applies an anti-aliasing filter to the specified image. This method is available in the Document Toolkits.

Syntax

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

Example

Visual BasicCopy Code
ImageProcessing.Effects.AntiAliasingCommand
   Public Sub AntiAliasingCommandExample()
      RasterCodecs.Startup()
      Dim codecs As New RasterCodecs()
      codecs.ThrowExceptionsOnInvalidImages = True

      Dim leadImage As RasterImage = codecs.Load("C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\Master.jpg")

      ' Prepare the command
      Dim command As AntiAliasingCommand = New AntiAliasingCommand
      'do the anti-aliasing on the image.
      command.Threshold = 25
      command.Dimension = 7
      command.Filter = AntiAliasingCommandType.Type1
      command.Run(leadImage)
      codecs.Save(leadImage, "C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\Result.jpg", RasterImageFormat.Jpeg, 24)

      RasterCodecs.Shutdown()
   End Sub
C#Copy Code
ImageProcessing.Effects.AntiAliasingCommand 
      public void AntiAliasingCommandExample() 
      { 
         // Load an image 
         RasterCodecs.Startup(); 
         RasterCodecs codecs = new RasterCodecs(); 
         codecs.ThrowExceptionsOnInvalidImages = true; 
 
         RasterImage image = codecs.Load(@"C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\Master.jpg"); 
 
         // Prepare the command 
         AntiAliasingCommand command = new AntiAliasingCommand(); 
         //do the anti-aliasing on the image. 
         command.Threshold = 25; 
         command.Dimension = 7; 
         command.Filter = AntiAliasingCommandType.Type1; 
         command.Run(image); 
         codecs.Save(image, @"C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\Result.jpg", RasterImageFormat.Jpeg, 24); 
 
         RasterCodecs.Shutdown(); 
      }

Remarks

  • The best results for anti-aliasing text can be obtained with the filter AntiAliasingCommandType.Type2.
  • The value of the Dimension property determines the extent of the anti-aliasing.
  • The threshold range for 16, 48 and 64-bit images is from 0 to 65535 and for 12-bit images the threshold range is from 0 to 4095. Otherwise, it is from 0 to 255. The threshold is applied on channels separately.
  • This command supports 12 and 16-bit grayscale and 48 and 64-bit color images. And can process the whole image or a region of the image. 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 Correcting Colors.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.Effects.AntiAliasingCommand

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