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DotRemove Event

Summary
Optional delegate method for additional processing.
Syntax
C#
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.

PropertyDescription
BlackCount Gets the total number of black pixels in the dot being processed.
Example
C#
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

Help Version 22.0.2023.11.1
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© 1991-2023 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.