LEADTOOLS WPF and Silverlight (Leadtools.Windows.Media.Effects assembly)

EdgeDetectEffect Class

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Example 





Members 
Leadtools.Windows.Media.Effects Namespace : EdgeDetectEffect Class
Detects the edges of the image based on threshold and an input matrix.
Object Model
Syntax
'Declaration
 
Public Class EdgeDetectEffect 
   Inherits System.Windows.Media.Effects.ShaderEffect
   Implements System.Windows.Media.Animation.IAnimatable 
'Usage
 
Dim instance As EdgeDetectEffect

            

        

            

            

            

        

            
        

            

        

            
            
            
            
            
            
            
Example

    

            
            

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Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.Windows.Controls
Imports Leadtools.Windows.Media
Imports Leadtools.Windows.Media.Effects

Class EdgeDetectEffectExampleWindow
   Inherits Window
   Public Sub New()
      Dim sp As New StackPanel()
      Content = sp
      Dim theViewer As New ImageViewer()

      theViewer.HorizontalAlignment = HorizontalAlignment.Center
      theViewer.VerticalAlignment = VerticalAlignment.Top
      theViewer.ImageHorizontalAlignment = HorizontalAlignment.Left
      theViewer.ImageVerticalAlignment = VerticalAlignment.Top

      sp.Children.Add(theViewer)

      ' Create the sliders
      Dim tb As New TextBlock()
      tb.HorizontalAlignment = HorizontalAlignment.Center
      tb.Text = "Threshold:"
      sp.Children.Add(tb)

      Dim theSlider As New Slider()
      theSlider.Minimum = 0.0
      theSlider.Maximum = 1.0
      theSlider.Width = 400
      theSlider.Orientation = Orientation.Horizontal
      theSlider.IsSnapToTickEnabled = True
      theSlider.TickPlacement = System.Windows.Controls.Primitives.TickPlacement.BottomRight
      theSlider.TickFrequency = 0.1
      theSlider.AutoToolTipPrecision = 2
      theSlider.AutoToolTipPlacement = System.Windows.Controls.Primitives.AutoToolTipPlacement.BottomRight

      sp.Children.Add(theSlider)

      ' Load an image into the viewer
      theViewer.Source = New BitmapImage(New Uri(System.IO.Path.Combine(LEAD_VARS.ImagesDir, "Cannon.jpg")))

      ' Create the effect
      Dim effect As New EdgeDetectEffect()
      effect.Threshold = 0.1F
      theViewer.ImageEffect = effect

      ' Bind the properties
      Dim bind As New Binding()
      bind.Source = effect
      bind.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged
      bind.Path = New PropertyPath("Threshold")
      theSlider.SetBinding(Slider.ValueProperty, bind)

      Title = "Using EdgeDetectEffect"
   End Sub
End Class

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;
using Leadtools.Windows.Controls;
using Leadtools.Windows.Media;
using Leadtools.Windows.Media.Effects;

class EdgeDetectEffectExampleWindow : Window
{
   public EdgeDetectEffectExampleWindow()
   {
      StackPanel sp = new StackPanel();
      Content = sp;
      ImageViewer theViewer = new ImageViewer();

      theViewer.HorizontalAlignment = HorizontalAlignment.Center;
      theViewer.VerticalAlignment = VerticalAlignment.Top;
      theViewer.ImageHorizontalAlignment = HorizontalAlignment.Left;
      theViewer.ImageVerticalAlignment = VerticalAlignment.Top;

      sp.Children.Add(theViewer);

      // Create the sliders
      TextBlock tb = new TextBlock();
      tb.HorizontalAlignment = HorizontalAlignment.Center;
      tb.Text = "Threshold:";
      sp.Children.Add(tb);

      Slider theSlider = new Slider();
      theSlider.Minimum = 0.0;
      theSlider.Maximum = 1.0;
      theSlider.Width = 400;
      theSlider.Orientation = Orientation.Horizontal;
      theSlider.IsSnapToTickEnabled = true;
      theSlider.TickPlacement = System.Windows.Controls.Primitives.TickPlacement.BottomRight;
      theSlider.TickFrequency = 0.1;
      theSlider.AutoToolTipPrecision = 2;
      theSlider.AutoToolTipPlacement = System.Windows.Controls.Primitives.AutoToolTipPlacement.BottomRight;

      sp.Children.Add(theSlider);

      // Load an image into the viewer
      theViewer.Source = new BitmapImage(new Uri(System.IO.Path.Combine(LEAD_VARS.ImagesDir, "Cannon.jpg")));

      // Create the effect
      EdgeDetectEffect effect = new EdgeDetectEffect();
      effect.Threshold = 0.1f;
      theViewer.ImageEffect = effect;

      // Bind the properties
      Binding bind = new Binding();
      bind.Source = effect;
      bind.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
      bind.Path = new PropertyPath("Threshold");
      theSlider.SetBinding(Slider.ValueProperty, bind);

      Title = "Using EdgeDetectEffect";
   }
}

static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

            

   

     

            
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.Windows.Media;
using Leadtools.Windows.Media.Effects;
using Leadtools.Windows.Controls;

class EdgeDetectEffectExampleWindow : UserControl
{
   public EdgeDetectEffectExampleWindow()
   {
      StackPanel sp = new StackPanel();
      Content = sp;
      ImageViewer theViewer = new ImageViewer();

      theViewer.HorizontalAlignment = HorizontalAlignment.Center;
      theViewer.VerticalAlignment = VerticalAlignment.Top;
      theViewer.ImageHorizontalAlignment = HorizontalAlignment.Left;
      theViewer.ImageVerticalAlignment = VerticalAlignment.Top;

      sp.Children.Add(theViewer);

      // Create the sliders
      TextBlock tb = new TextBlock();
      tb.HorizontalAlignment = HorizontalAlignment.Center;
      tb.Text = "Threshold:";
      sp.Children.Add(tb);

      Slider theSlider = new Slider();
      theSlider.Minimum = 0.0;
      theSlider.Maximum = 1.0;
      theSlider.Width = 400;
      theSlider.Orientation = Orientation.Horizontal;

      sp.Children.Add(theSlider);

      // Load an image into the viewer
      theViewer.Source = new BitmapImage(new Uri(LeadtoolsExamples.Common.ImagesPath.Path + "Cannon.jpg"));

      // Create the effect
      EdgeDetectEffect effect = new EdgeDetectEffect();
      effect.Threshold = 0.1f;
      theViewer.ImageEffect = effect;

      // Bind the properties
      Binding bind = new Binding();
      bind.Source = effect;
      bind.UpdateSourceTrigger = UpdateSourceTrigger.Default;
      bind.Path = new PropertyPath("Threshold");
      theSlider.SetBinding(Slider.ValueProperty, bind);
   }
}

            

   

     

            
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.Windows.Controls
Imports Leadtools.Windows.Media
Imports Leadtools.Windows.Media.Effects

Class EdgeDetectEffectExampleWindow
   Inherits UserControl
   Public Sub New()
      Dim sp As New StackPanel()
      Content = sp
      Dim theViewer As New ImageViewer()

      theViewer.HorizontalAlignment = HorizontalAlignment.Center
      theViewer.VerticalAlignment = VerticalAlignment.Top
      theViewer.ImageHorizontalAlignment = HorizontalAlignment.Left
      theViewer.ImageVerticalAlignment = VerticalAlignment.Top

      sp.Children.Add(theViewer)

      ' Create the sliders
      Dim tb As New TextBlock()
      tb.HorizontalAlignment = HorizontalAlignment.Center
      tb.Text = "Threshold:"
      sp.Children.Add(tb)

      Dim theSlider As New Slider()
      theSlider.Minimum = 0.0
      theSlider.Maximum = 1.0
      theSlider.Width = 400
      theSlider.Orientation = Orientation.Horizontal

      sp.Children.Add(theSlider)

      ' Load an image into the viewer
      theViewer.Source = New BitmapImage(New Uri(LeadtoolsExamples.Common.ImagesPath.Path + "Cannon.jpg"))

      ' Create the effect
      Dim effect As New EdgeDetectEffect()
      effect.Threshold = 0.1F
      theViewer.ImageEffect = effect

      ' Bind the properties
      Dim bind As New Binding()
      bind.Source = effect
      bind.UpdateSourceTrigger = UpdateSourceTrigger.Default
      bind.Path = New PropertyPath("Threshold")
      theSlider.SetBinding(Slider.ValueProperty, bind)
   End Sub
End Class

            

   

     

            
<Window x:Class="EdgeDetectEffectExample"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:leadControls="clr-namespace:Leadtools.Windows.Controls;assembly=Leadtools.Windows.Controls"
xmlns:leadEffects="clr-namespace:Leadtools.Windows.Media.Effects;assembly=Leadtools.Windows.Media.Effects"
Height="600" Width="800">
   <StackPanel>
      <leadControls:ImageViewer
            HorizontalAlignment="Center" VerticalAlignment="Top"
            ImageHorizontalAlignment="Left" ImageVerticalAlignment="Top"
            Source="file:///c:\users\Public\Documents\LEADTOOLS Images\cannon.jpg">
         <leadControls:ImageViewer.ImageEffect>
            <leadEffects:EdgeDetectEffect
               Threshold="{Binding Value, ElementName=ThresholdSlider, UpdateSourceTrigger=PropertyChanged}">
            </leadEffects:EdgeDetectEffect>
         </leadControls:ImageViewer.ImageEffect>
      </leadControls:ImageViewer>
      <TextBlock HorizontalAlignment="Center" Text="Threshold:"/>
      <Slider x:Name="ThresholdSlider"
            Minimum="0.0" Maximum="1.0" TickFrequency="0.1"
            Width="400" Orientation="Horizontal"
            IsSnapToTickEnabled="True" TickPlacement="BottomRight"
            AutoToolTipPrecision="2" AutoToolTipPlacement="BottomRight">
      </Slider>
   </StackPanel>
</Window>

            

   

      
	
      
	
    

            
           
            
Requirements
Target Platforms

            
            
See Also
Reference
EdgeDetectEffect Members

Leadtools.Windows.Media.Effects Namespace

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