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



Detects edges by examining the variation of colors in all directions using statistical indices.

Syntax

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

Example

Run the EdgeDetectStatisticalCommand on an image.

Visual BasicCopy Code
Public Sub EdgeDetectStatisticalCommandExample()
   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 EdgeDetectStatisticalCommand = New EdgeDetectStatisticalCommand
   command.Dimension = 15
   command.Threshold = 128
   command.EdgeColor = New RasterColor(255, 255, 255)
   command.BackGroundColor = New RasterColor(0, 0, 0)
   ' Apply an edge detector statistical command.
   command.Run(leadImage)
   codecs.Save(leadImage, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24)

   RasterCodecs.Shutdown()
End Sub
C#Copy Code
public void EdgeDetectStatisticalCommandExample() 
{ 
   // 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 
   EdgeDetectStatisticalCommand command = new EdgeDetectStatisticalCommand(); 
   command.Dimension       = 15; 
   command.Threshold       = 128; 
   command.EdgeColor       = new RasterColor(255, 255, 255); 
   command.BackGroundColor = new RasterColor(0, 0, 0); 
   // Apply an edge detector statistical command. 
   command.Run(image); 
   codecs.Save(image, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24); 
 
   RasterCodecs.Shutdown(); 
}

Remarks

  • The edges are detected by applying a statistical filter that analyzes the variations of colors in all directions around each pixel.
  • 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 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.EdgeDetectStatisticalCommand

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