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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

WinRT C#

C++

public class PerlinCommand : Leadtools.Imageprocessing.Leadtools.ImageProcessing.RasterCommand, Leadtools.Imageprocessing.Leadtools.ImageProcessing.IRasterCommand

Public Class PerlinCommand  
   Inherits Leadtools.Imageprocessing.Leadtools.ImageProcessing.RasterCommand 
   Implements Leadtools.Imageprocessing.Leadtools.ImageProcessing.IRasterCommand

public sealed class PerlinCommand : Leadtools.Imageprocessing.Leadtools.ImageProcessing.IRasterCommand

function Leadtools.ImageProcessing.SpecialEffects.PerlinCommand()

public ref class PerlinCommand : public Leadtools.Imageprocessing.Leadtools.ImageProcessing.RasterCommand, Leadtools.Imageprocessing.Leadtools.ImageProcessing.IRasterCommand

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.

WinRT C#

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.SpecialEffects 
 
<TestMethod()> _ 
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

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"; 
}

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.SpecialEffects; 
 
public async Task PerlinCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
   string srcFileName = @"Assets\Image1.cmp"; 
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName); 
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile)); 
 
   // Prepare the command 
   PerlinCommand command = new PerlinCommand () ; 
   RasterColor backColor   = RasterColorHelper.Create(0, 0, 0); 
   RasterColor perlinColor = RasterColorHelper.Create(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); 
 
}