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

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:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms

Reference

DotRemoveCommand Class

DotRemoveCommand Members

Download our FREE evaluation

Help Version 22.0.2023.11.1

Leadtools.ImageProcessing.Core Assembly

Introduction

Getting Started

Namespaces

Leadtools.ImageProcessing.Core Namespace

Assemblies