AddNoiseCommand Class

Summary

Adds random pixels to an image, letting you specify the percentage of coverage and the color plane.

Syntax

Objective-C

C++/CLI

Java

Python

public class AddNoiseCommand : RasterCommand

@interface LTAddNoiseCommand : LTRasterCommand

public class AddNoiseCommand 
    extends RasterCommand

public ref class AddNoiseCommand : public RasterCommand

class AddNoiseCommand(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 signed data images.
This command does not support 32-bit grayscale images.

For more information, refer to Applying Artistic Effects.

Add Noise Function - Before

Add Noise Function - After

View additional platform support for this Add Noise function.

Example

Run the AddNoiseCommand to add red noise to the image.

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Effects; 
 
 
public void AddNoiseCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample2.cmp")); 
 
   // Prepare the command 
   AddNoiseCommand command = new AddNoiseCommand(); 
   command.Range = 250; 
   //Add red noise with 25 percent coverage 
   command.Channel = RasterColorChannel.Red; 
   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:\LEADTOOLS23\Resources\Images"; 
}

 
import java.io.File; 
import java.io.IOException; 
 
import org.junit.*; 
import org.junit.Test; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
 
import leadtools.*; 
import leadtools.codecs.*; 
import leadtools.imageprocessing.RasterColorChannel; 
import leadtools.imageprocessing.effects.AddNoiseCommand; 
 
 
public void addNoiseCommandExample() { 
    final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
 
    // load an image 
    RasterCodecs codecs = new RasterCodecs(); 
    codecs.setThrowExceptionsOnInvalidImages(true); 
    RasterImage image = codecs.load(combine(LEAD_VARS_IMAGES_DIR, "sample2.cmp")); 
 
    // Prepare the command 
    AddNoiseCommand command = new AddNoiseCommand(); 
    command.setRange(250); 
    // Add red noise with 25 percent coverae 
    command.setChannel(RasterColorChannel.RED); 
    int change = command.run(image); 
    assertTrue(change != RasterImageChangedFlags.NONE); 
 
    codecs.save(image, combine(LEAD_VARS_IMAGES_DIR, "Result.jpg"), RasterImageFormat.JPEG, 24); 
    System.out.println("Command run and image saved to: " + combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")); 
}