Leadtools.Windows.Media.Effects Send comments on this topic. | Back to Introduction - All Topics | Help Version 15.02.15
MedianCommandBitmapEffect Class
See Also  Members   Example 
Leadtools.Windows.Media.Effects.Core Namespace : MedianCommandBitmapEffect Class





Changes the color of each pixel in an image to the median color of pixels in its neighborhood. This is similar to the Leadtools.Windows.Media.Effects.Effects.AverageCommandBitmapEffect command, but it is used for noise reduction, rather than a blur effect.

Syntax

Visual Basic (Declaration) 
Public Class MedianCommandBitmapEffect 
   Inherits RasterCommandBitmapEffect
Visual Basic (Usage)Copy Code
Dim instance As MedianCommandBitmapEffect
C# 
public class MedianCommandBitmapEffect : RasterCommandBitmapEffect
Managed Extensions for C++ 
public __gc class MedianCommandBitmapEffect : public RasterCommandBitmapEffect
C++/CLI 
public ref class MedianCommandBitmapEffect : public RasterCommandBitmapEffect
XAML Property Element Usage 

MedianCommandBitmapEffect ...

Example

Run the MedianCommandBitmapEffect on an image and apply a median filter.

Visual BasicCopy Code
Public Sub MedianCommandBitmapEffectExample(ByVal element As FrameworkElement)
   Dim effect As MedianCommandBitmapEffect = New MedianCommandBitmapEffect()
   effect.Dimension = 9
   element.BitmapEffect = effect

   Dim storyboard As Storyboard = New Storyboard()

   Dim animation1 As Int32Animation = New Int32Animation()
   animation1.From = 1
   animation1.To = 10
   animation1.Duration = New Duration(TimeSpan.Parse("0:0:2"))
   animation1.RepeatBehavior = RepeatBehavior.Forever
   animation1.AutoReverse = True

   storyboard.SetTargetName(animation1, "AnimatedBitmapEffect")
   storyboard.SetTargetProperty(animation1, New PropertyPath(MedianCommandBitmapEffect.DimensionProperty))
   element.RegisterName("AnimatedBitmapEffect", effect)
   storyboard.Children.Add(animation1)

   storyboard.Begin(element)
End Sub
C#Copy Code
public void MedianCommandBitmapEffectExample(FrameworkElement element) 
{ 
   MedianCommandBitmapEffect effect = new MedianCommandBitmapEffect(); 
   effect.Dimension = 9; 
   element.BitmapEffect = effect; 
 
   Storyboard storyboard = new Storyboard(); 
 
   Int32Animation animation1 = new Int32Animation(); 
   animation1.From = 1; 
   animation1.To = 10; 
   animation1.Duration = new Duration(TimeSpan.Parse("0:0:2")); 
   animation1.RepeatBehavior = RepeatBehavior.Forever; 
   animation1.AutoReverse = true; 
 
   Storyboard.SetTargetName(animation1, "AnimatedBitmapEffect"); 
   Storyboard.SetTargetProperty(animation1, new PropertyPath(MedianCommandBitmapEffect.DimensionProperty)); 
   element.RegisterName("AnimatedBitmapEffect", effect); 
   storyboard.Children.Add(animation1); 
 
   storyboard.Begin(element); 
}
XAMLCopy Code
<Page Title="CSAnimateEffect" Height="391" Width="300" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:lteffects="clr-namespace:Leadtools.Windows.Media.Effects.Core;assembly=Leadtools.Windows.Media.Effects"> 
  <Grid> 
    <Image Margin="10,10,10,10" HorizontalAlignment="Center" VerticalAlignment="Center" Source="C:\Program Files\LEAD Technologies, Inc\LEADTOOLS 15\Images\slave.jpg"> 
      <Image.BitmapEffect> 
        <lteffects:MedianCommandBitmapEffect x:Name="AnimatedBitmapEffect" Dimension="0" /> 
      </Image.BitmapEffect> 
      <Image.Triggers> 
        <EventTrigger RoutedEvent="Image.Loaded"> 
          <BeginStoryboard> 
            <Storyboard> 
              <Int32Animation Storyboard.TargetName="AnimatedBitmapEffect" Storyboard.TargetProperty="Dimension" From="1" To="10" Duration="0:0:2" RepeatBehavior="Forever" AutoReverse="true" /> 
            </Storyboard> 
          </BeginStoryboard> 
        </EventTrigger> 
      </Image.Triggers> 
    </Image> 
  </Grid> 
</Page>

Remarks

  • You control the effect by specifying the size of the neighborhood that is used for calculating the median value. For 8x8, set 8 in the Dimension property.

Inheritance Hierarchy

System.Object
   System.Windows.Threading.DispatcherObject
      System.Windows.DependencyObject
         System.Windows.Freezable
            System.Windows.Media.Animation.Animatable
               System.Windows.Media.Effects.BitmapEffect
                  Leadtools.Windows.Media.Effects.RasterCommandBitmapEffect
                     Leadtools.Windows.Media.Effects.Core.MedianCommandBitmapEffect

Requirements

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Vista, and Windows Server 2003

See Also