←Select platform

DespeckleCommand Class

Summary
Removes speckles from an image. Typically, this command is used to clean up scanned images (such as FAX images). This command is available in the Document/Medical Toolkits.
Syntax
C#
Objective-C
C++/CLI
Java
Python
public class DespeckleCommand : RasterCommand 
@interface LTDespeckleCommand : LTRasterCommand 
public class DespeckleCommand 
    extends RasterCommand 
public ref class DespeckleCommand : public RasterCommand   
class DespeckleCommand(RasterCommand): 
Remarks
  • This command removes 1-pixel speckles, and shrinks some larger speckles. Therefore, in some cases, larger speckles can be completely removed by running it more than once.
  • 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.
  • This command supports signed/unsigned data images.

For more information, refer to Removing Noise.

Despeckle Function - Before

Despeckle Function - Before

Despeckle Function - After

Despeckle Function - After

View additional platform support for this Despeckle function.

Example

Runs the DespeckleCommand on an image and removes speckles from it.

C#
Java
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void DespeckleCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Clean.tif")); 
 
   // Prepare the command 
   DespeckleCommand command = new DespeckleCommand(); 
   //Remove speckles from the image. 
   command.Run(image); 
 
} 
 
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.core.DespeckleCommand; 
 
 
public void despeckleCommandExample() { 
 
    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, "Clean.tif")); 
    assertTrue(new File(combine(LEAD_VARS_IMAGES_DIR, "Clean.tif")).exists()); 
 
    // Prepare the command 
    DespeckleCommand command = new DespeckleCommand(); 
 
    // Remove speckles from the image 
    command.run(image); 
    codecs.save(image, combine(LEAD_VARS_IMAGES_DIR, "Result.jpg"), RasterImageFormat.JPEG, 24); 
 
    assertTrue(new File(combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")).exists()); 
    System.out.println("Command run and image saved to: " + combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")); 
} 
Requirements

Target Platforms

Help Version 23.0.2024.3.3
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2024 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.ImageProcessing.Core Assembly
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.