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PosterizeCommand Class

Summary

Imposes a poster effect on an image by quantizing the image's colors to a specified number of color levels per plane. For example, two levels means two of red, two of green, and two of blue.

Syntax
C#
VB
Objective-C
C++
Java
public class PosterizeCommand : RasterCommand 
Public Class PosterizeCommand  
   Inherits RasterCommand 
@interface LTPosterizeCommand : LTRasterCommand 
public class PosterizeCommand extends RasterCommand 
public ref class PosterizeCommand : public RasterCommand

Remarks
  • 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.

If the image has a LUT and you want to work on the image data, set RasterImage.UseLookupTable to false. Then, after calling the method, reset the UselookupTable property to true, as follows: 

rasterImage.UseLookupTable = false; 
Method(rasterImage); 
rasterImage.UseLookupTable = true;

For more information, refer to Applying Artistic Effects.

Example

Run the PosterizeCommand on an image and posterize it.

C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
 
public void PosterizeCommandCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE1.CMP")); 
 
   // Prepare the command 
   PosterizeCommand command = new PosterizeCommand(); 
   //Apply a poster effect with twelve color levels per plane. 
   command.Levels = 12; 
   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.Color 
 
Public Sub PosterizeCommandCommandExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE1.CMP")) 
 
   ' Prepare the command 
   Dim command As PosterizeCommand = New PosterizeCommand 
   'Apply a poster effect with twelve color levels per plane. 
   command.Levels = 12 
 
   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#[Silverlight C# Example] 
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Examples; 
 
public void PosterizeCommandCommandExample(RasterImage image, Stream outStream) 
{ 
   // Prepare the command 
   PosterizeCommand command = new PosterizeCommand(); 
   //Apply a poster effect with twelve color levels per plane. 
   command.Levels = 12; 
   command.Run(image); 
 
   // Save result image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24); 
   image.Dispose(); 
} 
vb[Silverlight VB Example] 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Color 
 
Public Sub PosterizeCommandCommandExample(ByVal image As RasterImage, ByVal outStream As Stream) 
   ' Prepare the command 
   Dim command As PosterizeCommand = New PosterizeCommand() 
   'Apply a poster effect with twelve color levels per plane. 
   command.Levels = 12 
   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

See Also

Reference

PosterizeCommand Members

Leadtools.ImageProcessing.Color Namespace

Applying Artistic Effects

Leadtools.ImageProcessing.Effects.SharpenCommand

Leadtools.ImageProcessing.Effects.MosaicCommand

Leadtools.ImageProcessing.Effects.EmbossCommand

Leadtools.ImageProcessing.Effects.AverageCommand

Leadtools.ImageProcessing.Core.MedianCommand

Leadtools.ImageProcessing.Effects.AddNoiseCommand

IntensityDetectCommand Class

Leadtools.ImageProcessing.Effects.SpatialFilterCommand

Leadtools.ImageProcessing.Effects.BinaryFilterCommand

Leadtools.ImageProcessing.Core.MaximumCommand

Leadtools.ImageProcessing.Core.MinimumCommand

Leadtools.ImageProcessing.Effects.OilifyCommand

SolarizeCommand Class

Leadtools.ImageProcessing.Core.WindowLevelCommand

Leadtools.ImageProcessing.SpecialEffects.BumpMapCommand

Leadtools.ImageProcessing.Effects.CubismCommand

Leadtools.ImageProcessing.SpecialEffects.DrawStarCommand

Leadtools.ImageProcessing.SpecialEffects.DryCommand

Leadtools.ImageProcessing.SpecialEffects.FreePlaneBendCommand

Leadtools.ImageProcessing.SpecialEffects.FreeRadialBendCommand

Leadtools.ImageProcessing.SpecialEffects.GlassEffectCommand

Leadtools.ImageProcessing.SpecialEffects.GlowCommand

Leadtools.ImageProcessing.SpecialEffects.LensFlareCommand

Leadtools.ImageProcessing.SpecialEffects.LightCommand

Leadtools.ImageProcessing.SpecialEffects.OceanCommand

Leadtools.ImageProcessing.SpecialEffects.PlaneBendCommand

Leadtools.ImageProcessing.SpecialEffects.PlaneCommand

SampleTargetCommand Class

Leadtools.ImageProcessing.SpecialEffects.TunnelCommand

Leadtools.ImageProcessing.SpecialEffects.BendCommand

Leadtools.ImageProcessing.SpecialEffects.CylinderCommand

Leadtools.ImageProcessing.SpecialEffects.FreeHandShearCommand

Leadtools.ImageProcessing.SpecialEffects.FreeHandWaveCommand

Leadtools.ImageProcessing.SpecialEffects.ImpressionistCommand

Leadtools.ImageProcessing.SpecialEffects.PixelateCommand

Leadtools.ImageProcessing.SpecialEffects.PolarCommand

Leadtools.ImageProcessing.SpecialEffects.PunchCommand

Leadtools.ImageProcessing.SpecialEffects.RadialBlurCommand

Leadtools.ImageProcessing.SpecialEffects.RadialWaveCommand

Leadtools.ImageProcessing.SpecialEffects.RippleCommand

Leadtools.ImageProcessing.SpecialEffects.SphereCommand

Leadtools.ImageProcessing.SpecialEffects.SwirlCommand

Leadtools.ImageProcessing.SpecialEffects.WaveCommand

Leadtools.ImageProcessing.SpecialEffects.WindCommand

Leadtools.ImageProcessing.SpecialEffects.ZoomBlurCommand

Leadtools.ImageProcessing.SpecialEffects.ZoomWaveCommand

Leadtools.ImageProcessing.SpecialEffects.ShadowCommand

Leadtools.ImageProcessing.SpecialEffects.RevEffectCommand

Leadtools.ImageProcessing.SpecialEffects.AgingCommand

Leadtools.ImageProcessing.SpecialEffects.DiceEffectCommand

Leadtools.ImageProcessing.SpecialEffects.FunctionalLightCommand

Leadtools.ImageProcessing.SpecialEffects.PuzzleEffectCommand

Leadtools.ImageProcessing.SpecialEffects.RingEffectCommand

Leadtools.ImageProcessing.SpecialEffects.RadialBlurCommand

Leadtools.ImageProcessing.SpecialEffects.BricksTextureCommand

Leadtools.ImageProcessing.Core.DeskewCommand

Leadtools.ImageProcessing.SpecialEffects.DiffuseGlowCommand

Leadtools.ImageProcessing.SpecialEffects.GlowCommand

Leadtools.ImageProcessing.Core.HalfTonePatternCommand

Leadtools.ImageProcessing.Effects.HighPassCommand

Leadtools.ImageProcessing.Effects.MaskConvolutionCommand

Leadtools.ImageProcessing.SpecialEffects.PerspectiveCommand

Leadtools.ImageProcessing.SpecialEffects.PlasmaCommand

Leadtools.ImageProcessing.SpecialEffects.PointillistCommand

Leadtools.ImageProcessing.SpecialEffects.CanvasCommand

Leadtools.ImageProcessing.SpecialEffects.CloudsCommand

Leadtools.ImageProcessing.SpecialEffects.ColoredBallsCommand

Leadtools.ImageProcessing.SpecialEffects.DiffuseGlowCommand

Leadtools.ImageProcessing.Effects.DisplacementCommand

Leadtools.ImageProcessing.SpecialEffects.FragmentCommand

Leadtools.ImageProcessing.SpecialEffects.MosaicTilesCommand

Leadtools.ImageProcessing.Effects.OffsetCommand

Leadtools.ImageProcessing.SpecialEffects.RomanMosaicCommand

Leadtools.ImageProcessing.SpecialEffects.VignetteCommand

Leadtools.ImageProcessing.SpecialEffects.ZigZagCommand

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Leadtools.ImageProcessing.Color Assembly
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