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




Adjusts the intensity of colors in an image by changing the gamma constant that is used to map the intensity values.

Syntax

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

Example

Run the GammaCorrectCommandBitmapEffect on an image and apply gamma correction.

Remarks

  • Intensity values ideally follow a logarithmic progression, because the eye perceives changes in intensity as being equal when the ratio of change is equal. For example, we would see a change from 0.1 to 0.2 as being equal to a change from 0.2 to 0.4.
  • Gamma is a standard constant that is used to calculate the progression. For most CRTs the gamma constant is in the range of 2.2 to 2.5.
  • 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.GammaCorrectCommandBitmapEffect

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