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HalfToneCommand Class

Converts a 1-bit, 4-bit, 8-bit, 16-bit, 24-bit, or 32-bit image to a halftoned image, with a specified pattern rotation. A halftoned image is a 1-bit image that has been dithered for black and white printing or display.
public class HalfToneCommand : RasterCommand 
Public Class HalfToneCommand  
   Inherits RasterCommand 
@interface LTHalftoneCommand : LTRasterCommand 
public class HalfToneCommand extends RasterCommand 
public ref class HalfToneCommand : public RasterCommand   
  • For the HalfToneCommandType.UserDefined option, the number of images in the list must be at least equal to (Dimension * Dimension + 1). Images with higher indexes correspond to higher intensity values.
  • This command can process the whole image or a region of the image.
  • This command does not support 12 and 16-bit grayscale and 48 and 64-bit color images.
  • This command does not support signed data images.
  • This command supports 32-bit grayscale images.

For more information, refer to Introduction to Image Processing With LEADTOOLS.


Run the HalfToneCommand on an image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
public void HalfToneCommandExample() 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample5.cmp")); 
   // Prepare the command 
   HalfToneCommand command = new HalfToneCommand(); 
   command.Angle = 0; 
   command.Dimension = 2; 
   command.Type = HalfToneCommandType.View; 
   //Halftone the image. 
static class LEAD_VARS 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
Public Sub HalfToneCommandExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample5.cmp")) 
   ' Prepare the command 
      Dim command As HalfToneCommand = New HalfToneCommand 
      command.Angle = 0 
      command.Dimension = 2 
      command.Type = HalfToneCommandType.View 
      'Halftone the image. 
   Catch ex As Exception 
      MessageBox.Show(ex.Message, "HalfToneTest", MessageBoxButtons.OK, MessageBoxIcon.Exclamation) 
   End Try 
End Sub 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\LEADTOOLS22\Resources\Images" 
End Class 

Target Platforms

Help Version 22.0.2021.11.10
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Leadtools.ImageProcessing.Core Assembly
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2021 LEAD Technologies, Inc. All Rights Reserved.