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

BrightExtractEffect Class

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Example 





Members 
Leadtools.Windows.Media.Effects Namespace : BrightExtractEffect Class
Adjust the image brightness based on the given threshold.
Object Model
Syntax
'Declaration
 
Public Class BrightExtractEffect 
   Inherits System.Windows.Media.Effects.ShaderEffect
   Implements System.Windows.Media.Animation.IAnimatable 
'Usage
 
Dim instance As BrightExtractEffect

            

        

            

            

            

        

            
        

            

        

            
            
            
            
            
            
            
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 BrightExtractEffectExampleWindow
   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 slider
      Dim tb As New TextBlock()
      tb.HorizontalAlignment = HorizontalAlignment.Center
      tb.Text = "Threshold:"
      sp.Children.Add(tb)

      Dim theSlider As New Slider()
      theSlider.Minimum = -1.0
      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 BrightExtractEffect()
      effect.Threshold = 0.7
      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 BrightExtractEffect"
   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 BrightExtractEffectExampleWindow : Window
{
   public BrightExtractEffectExampleWindow()
   {
      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 slider
      TextBlock tb = new TextBlock();
      tb.HorizontalAlignment = HorizontalAlignment.Center;
      tb.Text = "Threshold:";
      sp.Children.Add(tb);

      Slider theSlider = new Slider();
      theSlider.Minimum = -1.0;
      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
      BrightExtractEffect effect = new BrightExtractEffect();
      effect.Threshold = 0.7;
      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 BrightExtractEffect";
   }
}

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 BrightExtractEffectExampleWindow : UserControl
{
   public BrightExtractEffectExampleWindow()
   {
      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 slider
      TextBlock tb = new TextBlock();
      tb.HorizontalAlignment = HorizontalAlignment.Center;
      tb.Text = "Threshold:";
      sp.Children.Add(tb);

      Slider theSlider = new Slider();
      theSlider.Minimum = -1.0;
      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
      BrightExtractEffect effect = new BrightExtractEffect();
      effect.Threshold = 0.7;
      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 BrightExtractEffectExampleWindow
   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 slider
      Dim tb As New TextBlock()
      tb.HorizontalAlignment = HorizontalAlignment.Center
      tb.Text = "Threshold:"
      sp.Children.Add(tb)

      Dim theSlider As New Slider()
      theSlider.Minimum = -1.0
      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 BrightExtractEffect()
      effect.Threshold = 0.7
      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="BrightExtractEffectExample"
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:BrightExtractEffect Threshold="{Binding Value, ElementName=ThresholdSlider, UpdateSourceTrigger=PropertyChanged}">
            </leadEffects:BrightExtractEffect>
         </leadControls:ImageViewer.ImageEffect>
      </leadControls:ImageViewer>
      <TextBlock HorizontalAlignment="Center" Text="Threshold:"/>
      <Slider x:Name="ThresholdSlider"
         Minimum="-1.0" 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
BrightExtractEffect Members

Leadtools.Windows.Media.Effects Namespace

Introduction




        
    

	
    

        

 
 
          

























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