public class IntensityDetectEffect : ShaderEffect
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.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.Windows.Controls;
using Leadtools.Windows.Media;
using Leadtools.Windows.Media.Effects;
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:\LEADTOOLS23\Resources\Images";
}