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EdgeDetectStatisticalCommand Class
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Leadtools.ImageProcessing.Effects Namespace : EdgeDetectStatisticalCommand Class



Detects edges by examining the variation of colors in all directions using statistical indices. Supported in Silverlight, Windows Phone 7

Object Model

EdgeDetectStatisticalCommand Class

Syntax

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

Example

Run the EdgeDetectStatisticalCommand on an image.

Visual BasicCopy Code
Public Sub EdgeDetectStatisticalCommandExample()
   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 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, 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
C#Copy Code
public void EdgeDetectStatisticalCommandExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

      RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "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, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24);

   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
SilverlightCSharpCopy Code
public void EdgeDetectStatisticalCommandExample(RasterImage image, Stream outStream)
{
   // 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);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}
SilverlightVBCopy Code
Public Sub EdgeDetectStatisticalCommandExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' 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(image)
   ' Save result image
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24)
   image.Dispose()
End Sub

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: Silverlight 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)

See Also