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AntiAliasingCommand Class

Summary

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

Syntax

C#
VB
Java
Objective-C
WinRT C#
C++
public class AntiAliasingCommand : RasterCommand 
@interface LTAntiAliasingCommand : LTRasterCommand 
public class AntiAliasingCommand extends RasterCommand 
function Leadtools.ImageProcessing.Effects.AntiAliasingCommand() 

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.

Example

Run the AntiAliasingCommand on an image and does anti-aliasing on it.

C#
VB
Silverlight C#
Silverlight VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Effects; 
 
public void AntiAliasingCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Jagged.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, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24); 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Effects 
      Leadtools.Examples.Support.SetLicense() 
 
Public Sub AntiAliasingCommandExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Jagged.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, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24) 
 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class 
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Effects; 
using Leadtools.Examples; 
 
public void AntiAliasingCommandExample(RasterImage image, Stream outStream) 
{ 
   // 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); 
   // Save result image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24); 
   image.Dispose(); 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Effects 
 
Public Sub AntiAliasingCommandExample(ByVal image As RasterImage, ByVal outStream As Stream) 
   ' 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(image) 
   ' Save result image 
   Dim codecs As RasterCodecs = New RasterCodecs() 
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24) 
   image.Dispose() 
End Sub 

Requirements

Target Platforms

Help Version 19.0.2017.10.18
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Leadtools.ImageProcessing.Effects Assembly