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AutoColorLevelCommandBitmapEffect Class
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Leadtools.Windows.Media.Effects.Color Namespace : AutoColorLevelCommandBitmapEffect Class




Applies one of several types of automatic color leveling to an image. This command is available in the Raster Pro and above toolkits.

Syntax

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

Example

Run the AutoColorLevelCommandBitmapEffect on an image.

Remarks

  • This command makes the dark values darker and the light values lighter, which automatically enhances shadows and brightens the image. It also maximizes the tonal range of the image. It enhances the contrast and intensity using the image's histogram and a color distribution-based algorithm.
  • The properties in the AutoColorLevelCommandBitmapEffect Class will be updated with the MinimumInput, MaximumInput, MinimumOutput, MaximumOutput and Gamma values used by a method for the appropriate channel(s).
  • If the image is a grayscale image, then AutoColorLevelCommandBitmapEffectsType.Level, AutoColorLevelCommandBitmapEffectsType.Contrast and AutoColorLevelCommandBitmapEffectsType.Intensity give identical results.
  • As an example, the following figure shows an image before any automatic color leveling has been performed:

    The following figure shows what would happen if you start with the original image and apply the AutoColorLevelCommandBitmapEffect using AutoColorLevelCommandBitmapEffectsType.Level flag.

    The following figure shows what would happen if you start with the original image and apply the AutoColorLevelCommandBitmapEffect using AutoColorLevelCommandBitmapEffectsType.Intensity flag.

    The following figure shows what would happen if you start with the original image and apply the AutoColorLevelCommandBitmapEffect using AutoColorLevelCommandBitmapEffectsType.Contrast flag.

  • This command 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 signed data images.
  • 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.AutoColorLevelCommandBitmapEffect

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