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SpatialFilterCommandBitmapEffect Class
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Leadtools.Windows.Media.Effects.Effects Namespace : SpatialFilterCommandBitmapEffect Class




Imposes a spatial filter on an image. This command is available in the Document/Medical Toolkits.

Syntax

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

Example

Run the SpatialFilterCommandBitmapEffect on an image and apply a Prewitt edge detection filter.

Remarks

  • A spatial filter recomputes the brightness of each pixel in an image by using a weighted averaging technique that considers the surrounding pixels. Spatial filters are used for operations such as sharpening an image or detecting edges within the image.
  • The SpatialFilterCommandBitmapEffect works best with 24-bit, 16-bit, or grayscale images. If the image uses a color palette, this command matches the new brightness value of each pixel to the nearest color in the existing palette.
  • 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.
  • It is beyond the scope of this documentation to explain how applying various weighting factors affects an image. If you specify your own filter, you should refer to a textbook on image processing. For example, Digital Image Processing: Principles and Applications, by Gregory A. Baxes.
  • 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.Effects.SpatialFilterCommandBitmapEffect

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