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HistogramContrastCommandBitmapEffect Class
See Also  Members  
Leadtools.Windows.Media.Effects.Color Namespace : HistogramContrastCommandBitmapEffect Class




Increases or decreases the contrast of the image, using a histogram to determine the median brightness.

Syntax

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

Example

Run the HistogramContrastCommandBitmapEffect on an image and increase its contrast.

Remarks

  • This class finds the median brightness of the image, then brightens the pixels with values above the median and darkens the pixels with values below the median. This is more sophisticated (but slower) than the ChangeContrastCommandBitmapEffect, which uses the middle possible value (128) rather than finding the actual median.
  • This class supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.
  • This command does not support 32-bit grayscale images.

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.Color.HistogramContrastCommandBitmapEffect

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also