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RegionHolesRemovalCommand Class
See Also  Members   Example 
Leadtools.ImageProcessing.Effects Namespace : RegionHolesRemovalCommand Class



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

Syntax

Visual Basic (Declaration) 
Public Class RegionHolesRemovalCommand 
   Inherits RasterCommand
   Implements IRasterCommand 
Visual Basic (Usage)Copy Code
Dim instance As RegionHolesRemovalCommand
C# 
public class RegionHolesRemovalCommand : RasterCommand, IRasterCommand 
C++/CLI 
public ref class RegionHolesRemovalCommand : public RasterCommand, IRasterCommand 

Example

Run the RegionHolesRemovalCommand on an image.

Visual BasicCopy Code
Public Sub RegionHolesRemovalCommandExample()
   RasterCodecs.Startup()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

   Dim leadImage As RasterImage = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Master.jpg")

   ' Prepare the command
   Dim rcRect As Rectangle = New Rectangle(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
   command.Run(leadImage)
   codecs.Save(leadImage, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24)

   RasterCodecs.Shutdown()
End Sub
C#Copy Code
public void RegionHolesRemovalCommandExample() 
{ 
   // Load an image 
   RasterCodecs.Startup(); 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Master.jpg"); 
 
   // Prepare the command 
   Rectangle rcRect = new Rectangle(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(); 
   command.Run(image); 
   codecs.Save(image, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24); 
 
   RasterCodecs.Shutdown(); 
}

Remarks

  • 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.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.Effects.RegionHolesRemovalCommand

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also