public double Factor { get; set; }
The factor to be applied in the function operation specified in CurveType. Default value is 0.
This parameter is used only if CurveType is CurveType.Exponential, CurveType.Logarithmic or CurveType.Sigmoid. If CurveType.Exponential or CurveType.Sigmoid is selected its value can be any value (+/-). If CurveType.Logarithmic is selected its value should be >= 0. If Factor = 0, the lookup table will be filled linearly.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.Windows.Controls;
using Leadtools.Windows.Media;
using Leadtools.Windows.Media.Effects;
class WindowLevelEffectExampleWindow : Window
{
public WindowLevelEffectExampleWindow()
{
StackPanel sp = new StackPanel();
Content = sp;
RasterImageViewer theViewer = new RasterImageViewer();
theViewer.HorizontalAlignment = HorizontalAlignment.Center;
theViewer.VerticalAlignment = VerticalAlignment.Top;
theViewer.ImageHorizontalAlignment = HorizontalAlignment.Left;
theViewer.ImageVerticalAlignment = VerticalAlignment.Top;
sp.Children.Add(theViewer);
// Load an image into the viewer
using (RasterCodecs codecs = new RasterCodecs())
{
theViewer.Image = codecs.Load(System.IO.Path.Combine(LEAD_VARS.ImagesDir, "Image3.dcm"));
}
// Create the sliders
TextBlock tb = new TextBlock();
tb.HorizontalAlignment = HorizontalAlignment.Center;
tb.Text = "Window Width:";
sp.Children.Add(tb);
Slider windowWidthSlider = new Slider();
windowWidthSlider.Minimum = 0.0;
windowWidthSlider.Maximum = Math.Pow(2, theViewer.Image.BitsPerPixel - 1);
windowWidthSlider.Width = 400;
windowWidthSlider.Orientation = Orientation.Horizontal;
windowWidthSlider.IsSnapToTickEnabled = true;
windowWidthSlider.TickPlacement = System.Windows.Controls.Primitives.TickPlacement.BottomRight;
windowWidthSlider.TickFrequency = 0.1;
windowWidthSlider.AutoToolTipPrecision = 2;
windowWidthSlider.AutoToolTipPlacement = System.Windows.Controls.Primitives.AutoToolTipPlacement.BottomRight;
sp.Children.Add(windowWidthSlider);
tb = new TextBlock();
tb.HorizontalAlignment = HorizontalAlignment.Center;
tb.Text = "Window Center:";
sp.Children.Add(tb);
Slider windowCenterSlider = new Slider();
windowCenterSlider.Minimum = 0.0;
windowCenterSlider.Maximum = Math.Pow(2, theViewer.Image.BitsPerPixel - 1);
windowCenterSlider.Width = 400;
windowCenterSlider.Orientation = Orientation.Horizontal;
windowCenterSlider.IsSnapToTickEnabled = true;
windowCenterSlider.TickPlacement = System.Windows.Controls.Primitives.TickPlacement.BottomRight;
windowCenterSlider.TickFrequency = 0.1;
windowCenterSlider.AutoToolTipPrecision = 2;
windowCenterSlider.AutoToolTipPlacement = System.Windows.Controls.Primitives.AutoToolTipPlacement.BottomRight;
sp.Children.Add(windowCenterSlider);
// Setup the effect
WindowLevelEffect effect = new WindowLevelEffect();
// Set the texture
effect.FillGrayTexture(theViewer.Image);
effect.Start = Colors.Black;
effect.End = Colors.White;
effect.CurveType = CurveType.Linear;
effect.Factor = 0.0;
effect.WindowWidth = Math.Pow(2, theViewer.Image.MaxValue - theViewer.Image.MinValue);
effect.WindowCenter = effect.WindowWidth / 2;
theViewer.ImageEffect = effect;
// Bind the properties
Binding bind = new Binding();
bind.Source = effect;
bind.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
bind.Path = new PropertyPath("WindowWidth");
windowWidthSlider.SetBinding(Slider.ValueProperty, bind);
bind = new Binding();
bind.Source = effect;
bind.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
bind.Path = new PropertyPath("WindowCenter");
windowCenterSlider.SetBinding(Slider.ValueProperty, bind);
Title = "Using WindowLevelEffect";
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}