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ColorHalftoneCommand Class
See Also  Members  
Leadtools.ImageProcessing.Effects Namespace : ColorHalftoneCommand Class



Shows the effect of using an enlarged halftone screen on each image channel. The filter divides the image into rectangles and replaces each rectangle with circles. Each channel has a separate grid of circles, and has its own angle setting. The size of each circle is proportional to the brightness of the rectangle that it is replacing. This method is available in the Document/Medical toolkits. Supported in Silverlight, Windows Phone 7

Object Model

ColorHalftoneCommand Class

Syntax

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

Example

Run the Leadtools.ImageProcessing.Effects.ColorHalftoneCommand on an image.

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

   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ImageProcessingDemo\Beauty16.jpg"), 16, CodecsLoadByteOrder.BgrOrGray, 1, 1)

   ' Prepare the command
   Dim command As New ColorHalftoneCommand
   command.MaximumRadius = 15
   command.CyanAngle = 10800
   command.MagentaAngle = 16200
   command.YellowAngle = 9000
   command.BlackAngle = 4500
   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
C#Copy Code
public void ColorHalftoneCommandExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

      RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"ImageProcessingDemo\Beauty16.jpg"),16,CodecsLoadByteOrder.BgrOrGray,1,1);


      // Prepare the command
      ColorHalftoneCommand command  = new ColorHalftoneCommand();
      command.MaximumRadius = 15;
      command.CyanAngle = 10800;
      command.MagentaAngle = 16200;
      command.YellowAngle = 9000;
      command.BlackAngle = 4500;
      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";
}
SilverlightCSharpCopy Code
public void ColorHalftoneCommandExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   ColorHalftoneCommand command = new ColorHalftoneCommand();
   command.MaximumRadius = 15;
   command.CyanAngle = 10800;
   command.MagentaAngle = 16200;
   command.YellowAngle = 9000;
   command.BlackAngle = 4500;
   command.Run(image);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}
SilverlightVBCopy Code
Public Sub ColorHalftoneCommandExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim command As ColorHalftoneCommand = New ColorHalftoneCommand()
   command.MaximumRadius = 15
   command.CyanAngle = 10800
   command.MagentaAngle = 16200
   command.YellowAngle = 9000
   command.BlackAngle = 4500
   command.Run(image)
   ' Save result image
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24)
   image.Dispose()
End Sub

Remarks

  • This method 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.
  • If the image has a region, this method works only on the region. If the image does not have a region, this method works on the entire image.
  • This method does not support signed data images.
  • This command does not support 32-bit grayscale images.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.Effects.ColorHalftoneCommand

Requirements

Target Platforms: Silverlight 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)

See Also

Reference

ColorHalftoneCommand Members
Leadtools.ImageProcessing.Effects Namespace
Color Halftone and Halftone Images
Leadtools.ImageProcessing.GrayscaleCommand
Leadtools.ImageProcessing.Color.GrayScaleExtendedCommand
Leadtools.ImageProcessing.Color.AutoColorLevelCommand
Leadtools.ImageProcessing.Color.ColorLevelCommand
Leadtools.ImageProcessing.Color.GrayScaleToDuotoneCommand
Leadtools.ImageProcessing.Color.GrayScaleToMultitoneCommand
RegionHolesRemovalCommand Class
Leadtools.ImageProcessing.Color.SelectiveColorCommand
SkeletonCommand Class
Leadtools.ImageProcessing.Core.HalfToneCommand
Leadtools.ImageProcessing.Color.ColorSeparateCommand
Leadtools.ImageProcessing.Color.ColorMergeCommand
Leadtools.ImageProcessing.Color.DesaturateCommand
Leadtools.ImageProcessing.Core.HalfTonePatternCommand
StatisticsInformationCommand Class
Leadtools.ImageProcessing.Color.HistogramCommand
Leadtools.ImageProcessing.Color.ColorCountCommand
Leadtools.ImageProcessing.Core.MinMaxBitsCommand
Leadtools.ImageProcessing.Core.MinMaxValuesCommand
Leadtools.ImageProcessing.Color.ConvertToColoredGrayCommand
Leadtools.ImageProcessing.Core.ColorizeGrayCommand
Leadtools.ImageProcessing.Core.ShiftDataCommand
Leadtools.ImageProcessing.Core.SelectDataCommand
Leadtools.ImageProcessing.Core.WindowLevelCommand
Leadtools.RasterPalette.WindowLevelFillLookupTable(Leadtools.RasterColor[],Leadtools.RasterColor,Leadtools.RasterColor,System.Int32,System.Int32,System.Int32,System.Int32,System.Int32,System.Int32,System.Int32,Leadtools.RasterPaletteWindowLevelFlags)