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DirectionEdgeStatisticalCommand Class

Summary

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.

Syntax

C#
VB
Java
Objective-C
WinRT C#
C++
public class DirectionEdgeStatisticalCommand : RasterCommand 
public sealed class DirectionEdgeStatisticalCommand : Leadtools.Imageprocessing.Leadtools.ImageProcessing.IRasterCommand   
@interface LTDirectionEdgeStatisticalCommand : LTRasterCommand 
public class DirectionEdgeStatisticalCommand extends RasterCommand 
function Leadtools.ImageProcessing.Effects.DirectionEdgeStatisticalCommand() 

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.

Example

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

C#
VB
Silverlight C#
Silverlight VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Effects; 
 
public void DirectionEdgeStatisticalCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ImageProcessingDemo\\NaturalFruits.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"; 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Effects 
      Leadtools.Examples.Support.SetLicense() 
 
Public Sub DirectionEdgeStatisticalCommandExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ImageProcessingDemo\\NaturalFruits.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 
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Effects; 
using Leadtools.Examples; 
 
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(); 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Effects 
 
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 

Requirements

Target Platforms

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

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Leadtools.ImageProcessing.Effects Assembly