EdgeDetectorCommand Class

C#
Visual Basic
WinRT C#
Java
Objective-C
WinRT JavaScript
C++

public class EdgeDetectorCommand : Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

'Declaration

Public Class EdgeDetectorCommand 
   Inherits Leadtools.ImageProcessing.RasterCommand
   Implements Leadtools.ImageProcessing.IRasterCommand

'Usage

Dim instance As EdgeDetectorCommand

public sealed class EdgeDetectorCommand : Leadtools.ImageProcessing.IRasterCommand

@interface LTEdgeDetectorCommand : LTRasterCommand

public class EdgeDetectorCommand extends RasterCommand

function Leadtools.ImageProcessing.Effects.EdgeDetectorCommand()

public ref class EdgeDetectorCommand : public Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

Filters such as Sobel filter, Prewitt filter, Laplacian filter, and Gradient filter are used to determine the pixels belonging to edges in the image.
The threshold range for the 16, 48, and 64-bit images is from 0 to 65535 and for 12-bit images from 0 to 4095. Otherwise, it is from 0 to 255. The threshold is applied on channels separately.
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.
This command supports signed/unsigned data images.

For more information, refer to Detecting and Enhancing Edges and Lines.

Run the EdgeDetectorCommand on an image.

C#
Visual Basic
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Effects

   
Public Sub EdgeDetectorCommandExample()
   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 EdgeDetectorCommand = New EdgeDetectorCommand
   command.Threshold = 60
   command.Filter = EdgeDetectorCommandType.SobelBoth
   'find the edges of 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;

      
public void EdgeDetectorCommandExample()
{
   // 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
   EdgeDetectorCommand command = new EdgeDetectorCommand();
   command.Threshold = 60;
   command.Filter = EdgeDetectorCommandType.SobelBoth;
   //find the edges of 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";
}

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Effects;
using Leadtools.ImageProcessing;

      
public async Task EdgeDetectorCommandExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   // Load the image
   string srcFileName = @"Assets\Image1.cmp";
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   // Prepare the command
   EdgeDetectorCommand command = new EdgeDetectorCommand();
   command.Threshold = 60;
   command.Filter = EdgeDetectorCommandType.SobelBoth;
   //find the edges of the image.
   command.Run(image);
   //Save as BMP
   string destFileName = @"result.bmp";
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName);
   await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.Bmp, 24);

}

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Effects;
using Leadtools.Examples;

public void EdgeDetectorCommandExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   EdgeDetectorCommand command = new EdgeDetectorCommand();
   command.Threshold = 60;
   command.Filter = EdgeDetectorCommandType.SobelBoth;
   //find the edges of 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 EdgeDetectorCommandExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim command As EdgeDetectorCommand = New EdgeDetectorCommand()
   command.Threshold = 60
   command.Filter = EdgeDetectorCommandType.SobelBoth
   'find the edges of 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

Target Platforms

Reference

EdgeDetectorCommand Members
Leadtools.ImageProcessing.Effects Namespace
Detecting and Enhancing Edges and Lines
CombineCommand Class
Leadtools.ImageProcessing.Color.IntensityDetectCommand
SharpenCommand Class
SpatialFilterCommand Class
SkeletonCommand Class