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PerlinCommand Class

Summary

Uses a pseudo-random number generator in order to create a Perlin noise, and then procedurally transforms that noise into a texture. This command is available in the Imaging Pro and above toolkits.

Syntax
C#
VB
C++
public class PerlinCommand : RasterCommand 
  
Public Class PerlinCommand  
   Inherits RasterCommand 
public ref class PerlinCommand : public RasterCommand   

Remarks
  • This method uses a pseudo-random number generator in order to create a Perlin noise, and then procedurally transforms that noise into a texture. Depending on the flags that are set, the texture can be saved as an image by itself, or the texture can be combined with another image.
  • This method is similar to the CloudsCommand in that they both use Perlin equations to generate pseudo-random noise, but each method applies different equations to the noise to produce the texture.
  • Use the Leadtools.ImageProcessing.Effects.AddNoiseCommand in order to add random noise to an image.
  • This command supports 12-bit and 16-bit grayscale and 48-bit and 64-bit color images. Support for 12-bit and 16-bit grayscale and 48 and 64 bit color images is available only in the Document/Medical toolkits.
  • This command does not support signed data images.
  • This command does not support 32-bit grayscale images.

For more information, refer to Using The PerlinCommand command.

Example

Run the PerlinCommand on an image and applies the Perlin filter.

C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.SpecialEffects; 
 
public void PerlinCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE1.CMP")); 
 
   // Prepare the command 
   PerlinCommand command = new PerlinCommand(); 
   RasterColor backColor = new RasterColor(0, 0, 0); 
   RasterColor perlinColor = new RasterColor(255, 0, 0); 
   command.Seed = 0; 
   command.Frequency = 16; 
   command.Iteration = 8; 
   command.Opacity = 75; 
   command.Backcolor = backColor; 
   command.PerlinColor = perlinColor; 
   command.XCircle = image.Width / 2; 
   command.YCircle = image.Height / 2; 
   command.FreqLayout = 50; 
   command.DenLayout = 1; 
   command.PerlinFlags = NoiseLayoutType.PF_Difference | NoiseLayoutType.PF_Circle; 
   command.Run(image); 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.SpecialEffects 
 
Public Sub PerlinCommandExample() 
   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 PerlinCommand = New PerlinCommand 
   Dim backColor As New RasterColor(0, 0, 0) 
   Dim perlinColor As New RasterColor(0, 255, 0) 
 
   command.Seed = 0 
   command.Frequency = 16 
   command.Iteration = 8 
   command.Opacity = 75 
   command.Backcolor = backColor 
   command.PerlinColor = perlinColor 
   command.XCircle = CInt(leadImage.Width / 2) 
   command.YCircle = CInt(leadImage.Height / 2) 
   command.FreqLayout = 50 
   command.DenLayout = 1 
   command.PerlinFlags = NoiseLayoutType.PF_Combine Or NoiseLayoutType.PF_Circle 
   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 

Requirements

Target Platforms

See Also

Reference

PerlinCommand Members

Leadtools.ImageProcessing.SpecialEffects Namespace

Removing Noise

Leadtools.ImageProcessing.Effects.AddNoiseCommand

Leadtools.ImageProcessing.Effects.SharpenCommand

Leadtools.ImageProcessing.Color.PosterizeCommand

Leadtools.ImageProcessing.Effects.MosaicCommand

Leadtools.ImageProcessing.Effects.EmbossCommand

Leadtools.ImageProcessing.Effects.AverageCommand

Leadtools.ImageProcessing.Core.MedianCommand

Leadtools.ImageProcessing.Color.IntensityDetectCommand

Leadtools.ImageProcessing.Effects.SpatialFilterCommand

Leadtools.ImageProcessing.Effects.BinaryFilterCommand

Leadtools.ImageProcessing.Core.MinimumCommand

Leadtools.ImageProcessing.Core.MaximumCommand

Leadtools.ImageProcessing.Effects.OilifyCommand

Leadtools.ImageProcessing.Color.SolarizeCommand

Leadtools.ImageProcessing.Core.WindowLevelCommand

BumpMapCommand Class

Leadtools.ImageProcessing.Effects.CubismCommand

DrawStarCommand Class

DryCommand Class

FreePlaneBendCommand Class

FreeRadialBendCommand Class

GlassEffectCommand Class

GlowCommand Class

LensFlareCommand Class

LightCommand Class

OceanCommand Class

PlaneBendCommand Class

PlaneCommand Class

Leadtools.ImageProcessing.Color.SampleTargetCommand

TunnelCommand Class

BendCommand Class

CylinderCommand Class

FreeHandShearCommand Class

FreeHandWaveCommand Class

ImpressionistCommand Class

PixelateCommand Class

PolarCommand Class

RadialBlurCommand Class

RadialWaveCommand Class

RippleCommand Class

SphereCommand Class

SwirlCommand Class

WaveCommand Class

WindCommand Class

ZoomBlurCommand Class

ZoomWaveCommand Class

ShadowCommand Class

RevEffectCommand Class

AgingCommand Class

DiceEffectCommand Class

FunctionalLightCommand Class

PuzzleEffectCommand Class

RingEffectCommand Class

Leadtools.ImageProcessing.Effects.TextureAlphaBlendCommand

Leadtools.ImageProcessing.Effects.AddNoiseCommand

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Leadtools.ImageProcessing.SpecialEffects Assembly