LEADTOOLS Image Processing (Leadtools.ImageProcessing.Effects assembly) Send comments on this topic. | Back to Introduction - All Topics | Help Version 17.0.3.29
DirectionEdgeStatisticalCommand Class
See Also  Members  
Leadtools.ImageProcessing.Effects Namespace : DirectionEdgeStatisticalCommand Class



Detects the variation of colors in the specified direction using statistical indices. It is similar to EdgeDetectStatisticalCommand, but this command allows you to specify the direction angle. Supported in Silverlight, Windows Phone 7

Object Model

DirectionEdgeStatisticalCommand Class

Syntax

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

Example

Run the DirectionEdgeStatisticalCommand on an image, to find it is edges.

Visual BasicCopy Code
Public Sub DirectionEdgeStatisticalCommandExample()
   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 DirectionEdgeStatisticalCommand = New DirectionEdgeStatisticalCommand

   command.Dimension = 15
   command.Threshold = 128
   command.Angle = 4500
   command.EdgeColor = New RasterColor(255, 255, 255)
   command.BackGroundColor = New RasterColor(0, 0, 0)
   'Find the edges in the image. 
   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 DirectionEdgeStatisticalCommandExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

      RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"));

      // Prepare the command
      DirectionEdgeStatisticalCommand command = new DirectionEdgeStatisticalCommand();

      command.Dimension    = 15;
      command.Threshold    = 128;
      command.Angle        = 4500;
      command.EdgeColor       = new RasterColor(255, 255, 255);
      command.BackGroundColor = new RasterColor(0, 0, 0);

      //Find the edges in the image.
      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 DirectionEdgeStatisticalCommandExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   DirectionEdgeStatisticalCommand command = new DirectionEdgeStatisticalCommand();
   command.Dimension = 15;
   command.Threshold = 128;
   command.Angle = 4500;
   command.EdgeColor = new RasterColor(255, 255, 255);
   command.BackGroundColor = new RasterColor(0, 0, 0);

   //Find the edges in the image.
   command.Run(image);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}
SilverlightVBCopy Code
Public Sub DirectionEdgeStatisticalCommandExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim command As DirectionEdgeStatisticalCommand = New DirectionEdgeStatisticalCommand()
   command.Dimension = 15
   command.Threshold = 128
   command.Angle = 4500
   command.EdgeColor = New RasterColor(255, 255, 255)
   command.BackGroundColor = New RasterColor(0, 0, 0)

   'Find the edges in the image.
   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 a specified direction 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.DirectionEdgeStatisticalCommand

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

Reference

DirectionEdgeStatisticalCommand Members
Leadtools.ImageProcessing.Effects Namespace
Detecting and Enhancing Edges and Lines
CombineCommand Class
Leadtools.ImageProcessing.Color.IntensityDetectCommand
SharpenCommand Class
SpatialFilterCommand Class
EdgeDetectorCommand Class
AddNoiseCommand Class
SpatialFilterCommand Class
BinaryFilterCommand Class
Leadtools.ImageProcessing.Core.MinimumCommand
Leadtools.ImageProcessing.Core.MaximumCommand
Leadtools.ImageProcessing.SpecialEffects.ShadowCommand
Leadtools.ImageProcessing.Color.ChangeHueSaturationIntensityCommand
Leadtools.ImageProcessing.Color.ColorThresholdCommand
Leadtools.ImageProcessing.Core.DiscreteFourierTransformCommand
DirectionEdgeStatisticalCommand Class
Leadtools.ImageProcessing.Core.FrequencyFilterMaskCommand
Leadtools.ImageProcessing.Core.FastFourierTransformCommand
Leadtools.ImageProcessing.Core.FrequencyFilterCommand
Leadtools.ImageProcessing.Core.FrequencyFilterMaskCommand
Leadtools.ImageProcessing.Core.FourierTransformDisplayCommand
StatisticsInformationCommand Class
FeretsDiameterCommand Class
ObjectInformationCommand Class
RegionContourPointsCommand Class
GetRegionPerimeterLength Method
Leadtools.ImageProcessing.Color.MathematicalFunctionCommand
Leadtools.ImageProcessing.Color.SegmentCommand
Leadtools.ImageProcessing.Core.SubtractBackgroundCommand
UserFilterCommand Class
Leadtools.ImageProcessing.SpecialEffects.BricksTextureCommand
Leadtools.ImageProcessing.Core.DeskewCommand
Leadtools.ImageProcessing.SpecialEffects.DiffuseGlowCommand
Leadtools.ImageProcessing.SpecialEffects.GlowCommand
Leadtools.ImageProcessing.Core.HalfTonePatternCommand
Leadtools.ImageProcessing.SpecialEffects.PerspectiveCommand
Leadtools.ImageProcessing.SpecialEffects.PlasmaCommand
Leadtools.ImageProcessing.SpecialEffects.PointillistCommand
HighPassCommand Class
MaskConvolutionCommand Class