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



Performs edge detection on the image.

Syntax

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

Example

Run the EdgeDetectEffectCommand on an image.

Visual BasicCopy Code
Public Sub EdgeDetectEffectCommandExample()
   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 command As EdgeDetectEffectCommand = New EdgeDetectEffectCommand
   command.Level = 50
   command.Threshold = 0
   command.Type = EdgeDetectEffectCommandType.Smooth
   ' Apply find edges effect on the image.
   command.Run(leadImage)
   codecs.Save(leadImage, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24)

   RasterCodecs.Shutdown()
End Sub
C#Copy Code
public void EdgeDetectEffectCommandExample() 
{ 
   // 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 
   EdgeDetectEffectCommand command = new EdgeDetectEffectCommand(); 
   command.Level     = 50; 
   command.Threshold = 0; 
   command.Type     = EdgeDetectEffectCommandType.Smooth; 
   // Apply find edges effect on the image. 
   command.Run(image); 
   codecs.Save(image, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24); 
 
   RasterCodecs.Shutdown(); 
}

Remarks

  • This command detects the edges in an image and then replaces the values of edges by new values calculated according to the Type.
  • 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 does not support signed data images.
  • This command does not support 32-bit grayscale images.
For more information, refer to Detecting and Enhancing Edges and Lines.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.Effects.EdgeDetectEffectCommand

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