Enhances the image colors by adjusting the image brightness and contrast using specified values.
public class ContrastAdjustEffect : ShaderEffect
Public Class ContrastAdjustEffect
Inherits System.Windows.Media.Effects.ShaderEffect
Implements System.Windows.Media.Animation.IAnimatable
public ref class ContrastAdjustEffect : public System.Windows.Media.Effects.ShaderEffect, System.Windows.Media.Animation.IAnimatable
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.Windows.Controls;
using Leadtools.Windows.Media;
using Leadtools.Windows.Media.Effects;
class ContrastAdjustEffectExampleWindow : Window
{
public ContrastAdjustEffectExampleWindow()
{
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 = "Brightness:";
sp.Children.Add(tb);
Slider brightnessSlider = new Slider();
brightnessSlider.Minimum = 0.0;
brightnessSlider.Maximum = 2.0;
brightnessSlider.Width = 400;
brightnessSlider.Orientation = Orientation.Horizontal;
brightnessSlider.IsSnapToTickEnabled = true;
brightnessSlider.TickPlacement = System.Windows.Controls.Primitives.TickPlacement.BottomRight;
brightnessSlider.TickFrequency = 0.1;
brightnessSlider.AutoToolTipPrecision = 2;
brightnessSlider.AutoToolTipPlacement = System.Windows.Controls.Primitives.AutoToolTipPlacement.BottomRight;
sp.Children.Add(brightnessSlider);
tb = new TextBlock();
tb.HorizontalAlignment = HorizontalAlignment.Center;
tb.Text = "Contrast:";
sp.Children.Add(tb);
Slider contrastSlider = new Slider();
contrastSlider.Minimum = 0.0;
contrastSlider.Maximum = 2.0;
contrastSlider.Width = 400;
contrastSlider.Orientation = Orientation.Horizontal;
contrastSlider.IsSnapToTickEnabled = true;
contrastSlider.TickPlacement = System.Windows.Controls.Primitives.TickPlacement.BottomRight;
contrastSlider.TickFrequency = 0.1;
contrastSlider.AutoToolTipPrecision = 2;
contrastSlider.AutoToolTipPlacement = System.Windows.Controls.Primitives.AutoToolTipPlacement.BottomRight;
sp.Children.Add(contrastSlider);
// Load an image into the viewer
theViewer.Source = new BitmapImage(new Uri(System.IO.Path.Combine(LEAD_VARS.ImagesDir, "Cannon.jpg")));
// Create the effect
ContrastAdjustEffect effect = new ContrastAdjustEffect();
effect.Brightness = 0.0;
effect.Contrast = 1.2;
theViewer.ImageEffect = effect;
// Bind the properties
Binding bind = new Binding();
bind.Source = effect;
bind.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
bind.Path = new PropertyPath("Brightness");
brightnessSlider.SetBinding(Slider.ValueProperty, bind);
bind = new Binding();
bind.Source = effect;
bind.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
bind.Path = new PropertyPath("Contrast");
contrastSlider.SetBinding(Slider.ValueProperty, bind);
Title = "Using ContrastAdjustEffect";
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.Windows.Controls
Imports Leadtools.Windows.Media
Imports Leadtools.Windows.Media.Effects
Class ContrastAdjustEffectExampleWindow
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 = "Brightness:"
sp.Children.Add(tb)
Dim brightnessSlider As New Slider()
brightnessSlider.Minimum = 0.0
brightnessSlider.Maximum = 2.0
brightnessSlider.Width = 400
brightnessSlider.Orientation = Orientation.Horizontal
brightnessSlider.IsSnapToTickEnabled = True
brightnessSlider.TickPlacement = System.Windows.Controls.Primitives.TickPlacement.BottomRight
brightnessSlider.TickFrequency = 0.1
brightnessSlider.AutoToolTipPrecision = 2
brightnessSlider.AutoToolTipPlacement = System.Windows.Controls.Primitives.AutoToolTipPlacement.BottomRight
sp.Children.Add(brightnessSlider)
tb = New TextBlock()
tb.HorizontalAlignment = HorizontalAlignment.Center
tb.Text = "Contrast:"
sp.Children.Add(tb)
Dim contrastSlider As New Slider()
contrastSlider.Minimum = 0.0
contrastSlider.Maximum = 2.0
contrastSlider.Width = 400
contrastSlider.Orientation = Orientation.Horizontal
contrastSlider.IsSnapToTickEnabled = True
contrastSlider.TickPlacement = System.Windows.Controls.Primitives.TickPlacement.BottomRight
contrastSlider.TickFrequency = 0.1
contrastSlider.AutoToolTipPrecision = 2
contrastSlider.AutoToolTipPlacement = System.Windows.Controls.Primitives.AutoToolTipPlacement.BottomRight
sp.Children.Add(contrastSlider)
' 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 ContrastAdjustEffect()
effect.Brightness = 0.0
effect.Contrast = 1.2
theViewer.ImageEffect = effect
' Bind the properties
Dim bind As New Binding()
bind.Source = effect
bind.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged
bind.Path = New PropertyPath("Brightness")
brightnessSlider.SetBinding(Slider.ValueProperty, bind)
bind = New Binding()
bind.Source = effect
bind.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged
bind.Path = New PropertyPath("Contrast")
contrastSlider.SetBinding(Slider.ValueProperty, bind)
Title = "Using ContrastAdjustEffect"
End Sub
End Class
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;
using Leadtools.Windows.Media;
using Leadtools.Windows.Media.Effects;
using Leadtools.Windows.Controls;
class ContrastAdjustEffectExampleWindow : UserControl
{
public ContrastAdjustEffectExampleWindow()
{
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 = "Brightness:";
sp.Children.Add(tb);
Slider brightnessSlider = new Slider();
brightnessSlider.Minimum = 0.0;
brightnessSlider.Maximum = 2.0;
brightnessSlider.Width = 400;
brightnessSlider.Orientation = Orientation.Horizontal;
sp.Children.Add(brightnessSlider);
tb = new TextBlock();
tb.HorizontalAlignment = HorizontalAlignment.Center;
tb.Text = "Contrast:";
sp.Children.Add(tb);
Slider contrastSlider = new Slider();
contrastSlider.Minimum = 0.0;
contrastSlider.Maximum = 2.0;
contrastSlider.Width = 400;
contrastSlider.Orientation = Orientation.Horizontal;
sp.Children.Add(contrastSlider);
// Load an image into the viewer
theViewer.Source = new BitmapImage(new Uri(LeadtoolsExamples.Common.ImagesPath.Path + "Cannon.jpg"));
// Create the effect
ContrastAdjustEffect effect = new ContrastAdjustEffect();
effect.Brightness = 0.0;
effect.Contrast = 1.2;
theViewer.ImageEffect = effect;
// Bind the properties
Binding bind = new Binding();
bind.Source = effect;
bind.UpdateSourceTrigger = UpdateSourceTrigger.Default;
bind.Path = new PropertyPath("Brightness");
brightnessSlider.SetBinding(Slider.ValueProperty, bind);
bind = new Binding();
bind.Source = effect;
bind.UpdateSourceTrigger = UpdateSourceTrigger.Default;
bind.Path = new PropertyPath("Contrast");
contrastSlider.SetBinding(Slider.ValueProperty, bind);
}
}
vb[Silverlight VB Example]
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.Windows.Controls
Imports Leadtools.Windows.Media
Imports Leadtools.Windows.Media.Effects
Class ContrastAdjustEffectExampleWindow
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 = "Brightness:"
sp.Children.Add(tb)
Dim brightnessSlider As New Slider()
brightnessSlider.Minimum = 0.0
brightnessSlider.Maximum = 2.0
brightnessSlider.Width = 400
brightnessSlider.Orientation = Orientation.Horizontal
sp.Children.Add(brightnessSlider)
tb = New TextBlock()
tb.HorizontalAlignment = HorizontalAlignment.Center
tb.Text = "Contrast:"
sp.Children.Add(tb)
Dim contrastSlider As New Slider()
contrastSlider.Minimum = 0.0
contrastSlider.Maximum = 2.0
contrastSlider.Width = 400
contrastSlider.Orientation = Orientation.Horizontal
sp.Children.Add(contrastSlider)
' 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 ContrastAdjustEffect()
effect.Brightness = 0.0
effect.Contrast = 1.2
theViewer.ImageEffect = effect
' Bind the properties
Dim bind As New Binding()
bind.Source = effect
bind.UpdateSourceTrigger = UpdateSourceTrigger.Default
bind.Path = New PropertyPath("Brightness")
brightnessSlider.SetBinding(Slider.ValueProperty, bind)
bind = New Binding()
bind.Source = effect
bind.UpdateSourceTrigger = UpdateSourceTrigger.Default
bind.Path = New PropertyPath("Contrast")
contrastSlider.SetBinding(Slider.ValueProperty, bind)
End Sub
End Class
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
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Supported Platforms
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Imaging, Medical, and Document
C API/C++ Class Libraries
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