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EdgeDetectEffectCommand Constructor(int,int,EdgeDetectEffectCommandType)

Summary

Initializes a new EdgeDetectEffectCommand class object with explicit parameters.

Syntax
C#
VB
Objective-C
C++
Java
Public Function New( _ 
   ByVal level As Integer, _ 
   ByVal threshold As Integer, _ 
   ByVal type As EdgeDetectEffectCommandType _ 
) 
- (instancetype)initWithLevel:(NSUInteger)level 
                    threshold:(NSInteger)threshold 
                         type:(LTEdgeDetectEffectCommandType)type 
public EdgeDetectEffectCommand( 
   int level,  
   int threshold,  
   EdgeDetectEffectCommandType type 
) 
public: 
EdgeDetectEffectCommand(  
   int level, 
   int threshold, 
   EdgeDetectEffectCommandType type 
) 

Parameters

level
Level value used to determine the brightness of the edges. Standard value is 50. Range between 1 and 100. Big values will produce bright edges.

threshold
Threshold value used to determine which pixels are going to be filtered. If the difference determined for a pixel is less than this value, the pixel is set to 0. If the difference is greater, the filter will be applied to the pixel. This parameter only accepts positive values.

type
Flag that indicates the type of edge to generate.

Example

Run the EdgeDetectEffectCommand on an image.

C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Effects; 
 
public void EdgeDetectEffectConstructorExample() 
{ 
   // 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(75, 0, 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 EdgeDetectEffectConstructorExample() 
   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 
   command = New EdgeDetectEffectCommand(75, 0, 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 EdgeDetectEffectConstructorExample(RasterImage image, Stream outStream) 
{ 
   // Prepare the command 
   EdgeDetectEffectCommand command = new EdgeDetectEffectCommand(75, 0, 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 EdgeDetectEffectConstructorExample(ByVal image As RasterImage, ByVal outStream As Stream) 
   ' Prepare the command 
   Dim command As EdgeDetectEffectCommand = New EdgeDetectEffectCommand(75, 0, 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 
Requirements

Target Platforms

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Leadtools.ImageProcessing.Effects Assembly