IntensityDetectEffect Class

Applies binary segmentation to an image by filtering the specified image to detect colors in a specified intensity range.

Object Model

Syntax

Visual Basic
C#
Objective-C
Java
C++

public class IntensityDetectEffect : System.Windows.Media.Effects.ShaderEffect, System.Windows.Media.Animation.IAnimatable

'Declaration
 
Public Class IntensityDetectEffect 
   Inherits System.Windows.Media.Effects.ShaderEffect
   Implements System.Windows.Media.Animation.IAnimatable

'Usage
 
Dim instance As IntensityDetectEffect

ObjectiveC Syntax

Java Syntax

public ref class IntensityDetectEffect : public System.Windows.Media.Effects.ShaderEffect, System.Windows.Media.Animation.IAnimatable

Remarks

This effect converts the image to a black and white, based on the threshold Intensity. Values less than Intensity are set to black while values larger than Intensity are set to white.

Example

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

Copy Code

Class IntensityDetectEffectExampleWindow
      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 = "Intensity:"
         sp.Children.Add(tb)

         Dim theSlider As New Slider()
         theSlider.Minimum = 0.0
         theSlider.Maximum = 256.0
         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 IntensityDetectEffect()
         effect.Intensity = 128.5
         theViewer.ImageEffect = effect

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

         Title = "Using IntensityDetectEffect"
      End Sub
   End Class

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

class IntensityDetectEffectExampleWindow : Window
   {
      public IntensityDetectEffectExampleWindow()
      {
         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 = "Intensity:";
         sp.Children.Add(tb);

         Slider theSlider = new Slider();
         theSlider.Minimum = 0.0;
         theSlider.Maximum = 256.0;
         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
         IntensityDetectEffect effect = new IntensityDetectEffect();
         effect.Intensity = 128.5;
         theViewer.ImageEffect = effect;

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

         Title = "Using IntensityDetectEffect";
      }
   }

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

class IntensityDetectEffectExampleWindow : UserControl
{
   public IntensityDetectEffectExampleWindow()
   {
      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 = "Intensity:";
      sp.Children.Add(tb);

      Slider theSlider = new Slider();
      theSlider.Minimum = 0.0;
      theSlider.Maximum = 256.0;
      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
      IntensityDetectEffect effect = new IntensityDetectEffect();
      effect.Intensity = 128.5;
      theViewer.ImageEffect = effect;

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

Class IntensityDetectEffectExampleWindow
   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 = "Intensity:"
      sp.Children.Add(tb)

      Dim theSlider As New Slider()
      theSlider.Minimum = 0.0
      theSlider.Maximum = 256.0
      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 IntensityDetectEffect()
      effect.Intensity = 128.5
      theViewer.ImageEffect = effect

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

<Window x:Class="IntensityDetectEffectExample"
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:IntensityDetectEffect
               Intensity="{Binding Value, ElementName=IntensitySlider, UpdateSourceTrigger=PropertyChanged}">
            </leadEffects:IntensityDetectEffect>
         </leadControls:ImageViewer.ImageEffect>
      </leadControls:ImageViewer>
      <TextBlock HorizontalAlignment="Center" Text="Intensity:"/>
      <Slider x:Name="IntensitySlider"
            Minimum="0.0" Maximum="256.0" TickFrequency="10"
            Width="400" Orientation="Horizontal"
            IsSnapToTickEnabled="True" TickPlacement="BottomRight"
            AutoToolTipPrecision="2" AutoToolTipPlacement="BottomRight">
      </Slider>
   </StackPanel>
</Window>

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

IntensityDetectEffect Members
Leadtools.Windows.Media.Effects Namespace
Introduction