EdgeDetectEffectCommand Class

Summary

Performs edge detection on the image.

Syntax

Objective-C

C++

Java

public class EdgeDetectEffectCommand : RasterCommand

Public Class EdgeDetectEffectCommand  
   Inherits RasterCommand

@interface LTEdgeDetectEffectCommand : LTRasterCommand

public class EdgeDetectEffectCommand extends RasterCommand

public ref class EdgeDetectEffectCommand : public RasterCommand

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.

Example

Run the EdgeDetectEffectCommand on an image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Effects; 
 
public void EdgeDetectEffectCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample5.cmp")); 
 
   // 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, 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 
 
Public Sub EdgeDetectEffectCommandExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample5.cmp")) 
 
   ' 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, 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#[Silverlight C# Example] 
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Effects; 
using Leadtools.Examples; 
 
public void EdgeDetectEffectCommandExample(RasterImage image, Stream outStream) 
{ 
   // 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); 
   // Save result image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24); 
   image.Dispose(); 
} 
vb[Silverlight VB Example] 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Effects 
 
Public Sub EdgeDetectEffectCommandExample(ByVal image As RasterImage, ByVal outStream As Stream) 
   ' 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(image) 
   ' Save result image 
   Dim codecs As RasterCodecs = New RasterCodecs() 
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24) 
   image.Dispose() 
End Sub