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RegionHolesRemovalCommand Class


Removes all the holes in a region. This command is available in the Document/Medical Toolkits.

public class RegionHolesRemovalCommand : RasterCommand 
Public Class RegionHolesRemovalCommand  
   Inherits RasterCommand 
public ref class RegionHolesRemovalCommand : public RasterCommand   

  • This command is designed to work on images that have a region. It removes the holes from the image's region. If this command is used with an image that does not have a region, the "Invalid Parameter" error is returned.
  • 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 supports 32-bit grayscale images.


Run the RegionHolesRemovalCommand on an image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Effects; 
public void RegionHolesRemovalCommandExample() 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg")); 
   // Prepare the command 
   LeadRect rcRect = new LeadRect(image.Width / 8, image.Height / 8, image.Width / 2 + image.Width / 8, image.Height / 2 + image.Height / 8); 
   image.AddEllipseToRegion(null, rcRect, RasterRegionCombineMode.SetNot); 
   RegionHolesRemovalCommand command = new RegionHolesRemovalCommand(); 
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24); 
static class LEAD_VARS 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Effects 
Public Sub RegionHolesRemovalCommandExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg")) 
   ' Prepare the command 
   Dim rcRect As LeadRect = New LeadRect(leadImage.Width \ 8, leadImage.Height \ 8, leadImage.Width \ 2 + leadImage.Width \ 8, leadImage.Height \ 2 + leadImage.Height \ 8) 
   leadImage.AddEllipseToRegion(Nothing, rcRect, RasterRegionCombineMode.SetNot) 
   Dim command As RegionHolesRemovalCommand = New RegionHolesRemovalCommand 
   codecs.Save(leadImage, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24) 
End Sub 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class 


Target Platforms

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Leadtools.ImageProcessing.Effects Assembly