DotRemove Event

Summary

Optional delegate method for additional processing.

Syntax

Objective-C

C++/CLI

Java

Python

public event EventHandler<DotRemoveCommandEventArgs> DotRemove

typedef void (^LTDotRemoveCommandStatus)(LTRasterImage *image, LTDotRemoveCommandEventArgs *args, LTRemoveStatus *status) 
 
- (BOOL)run:(LTRasterImage *)image 
   progress:(nullable LTRasterCommandProgress)progressHandler 
     status:(nullable LTDotRemoveCommandStatus)dotRemoveStatus 
      error:(NSError **)error

public void addDotRemoveCommandListener(DotRemoveCommandListener listener) 
public void removeDotRemoveCommandListener(DotRemoveCommandListener listener)

public: 
event EventHandler<DotRemoveCommandEventArgs^>^ DotRemove

def DotRemove(sender,e): # sender: DotRemoveCommand e: DotRemoveCommandEventArgs

Event Data

The event handler receives an argument of type DotRemoveCommandEventArgs containing data related to this event. The following DotRemoveCommandEventArgs properties provide information specific to this event.

Property	Description
BlackCount	Gets the total number of black pixels in the dot being processed.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void DotRemoveCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Clean.tif")); 
 
   // Prepare the command 
   DotRemoveCommand command = new DotRemoveCommand(); 
   command.DotRemove += new EventHandler<DotRemoveCommandEventArgs>(DotRemoveEvent_S1); 
   command.Flags = DotRemoveCommandFlags.UseSize; 
   command.MaximumDotHeight = 10; 
   command.MaximumDotWidth = 10; 
   command.MinimumDotHeight = 1; 
   command.MinimumDotWidth = 1; 
 
   command.Run(image); 
 
} 
 
private void DotRemoveEvent_S1(object sender, DotRemoveCommandEventArgs e) 
{ 
   System.Diagnostics.Debug.WriteLine("Size   " + e.BoundingRectangle.Width + e.BoundingRectangle.Height + "Bounds" 
      + e.BoundingRectangle.Left + "," + e.BoundingRectangle.Top + "," + e.BoundingRectangle.Right + "," + e.BoundingRectangle.Bottom + "," 
      + "     WhiteCount" + e.WhiteCount + "    BlackCount" + e.BlackCount, "DotRemove Event"); 
 
   //Do not remove the speck if it contains any white pixels 
   if (e.WhiteCount > 0) 
   { 
      e.Status = RemoveStatus.NoRemove; 
   } 
   else 
   { 
      e.Status = RemoveStatus.Remove; 
   } 
} 
 
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.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.*; 
 
 
public void dotRemoveCommandExample() { 
   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")); 
   String outputFileName = combine(LEAD_VARS_IMAGES_DIR, "LEAD_dotRemoveExample.jpg"); 
   // Prepare the command 
   DotRemoveCommand command = new DotRemoveCommand(); 
   command.addDotRemoveCommandListener(dotRemoveEventS1); 
   command.setFlags(DotRemoveCommandFlags.USE_SIZE.getValue()); 
   command.setMaximumDotHeight(10); 
   command.setMaximumDotWidth(10); 
   command.setMinimumDotHeight(1); 
   command.setMinimumDotWidth(1); 
   command.run(image); 
   System.out.println("Executed changes on loaded image..."); 
 
   codecs.save(image, outputFileName, RasterImageFormat.JPEG, 8); 
   System.out.println("Saved updated file to:\n" + outputFileName); 
   assertTrue(new File(outputFileName).exists()); 
} 
 
DotRemoveCommandListener dotRemoveEventS1 = new DotRemoveCommandListener() { 
   @Override 
   public void onDotRemoveEvent(DotRemoveCommandEvent e) { 
      System.out.println("Size   " + e.getBoundingRectangle().getWidth() + e.getBoundingRectangle().getHeight() 
            + "Bounds" + e.getBoundingRectangle().getLeft() + "," + e.getBoundingRectangle().getTop() + "," 
            + e.getBoundingRectangle().getRight() + "," + e.getBoundingRectangle().getBottom() + "," 
            + "     WhiteCount" + e.getWhiteCount() + "    BlackCount" + e.getBlackCount() + " DotRemove Event"); 
 
      // Do not remove the speck if it contains any white pixels 
      if (e.getWhiteCount() > 0) { 
         e.setStatus(RemoveStatus.NO_REMOVE); 
      } else { 
         e.setStatus(RemoveStatus.REMOVE); 
      } 
   } 
};

Requirements

Target Platforms

Reference

DotRemoveCommand Class

DotRemoveCommand Members

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Help Version 23.0.2024.3.3

Leadtools.ImageProcessing.Core Assembly

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