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UnsharpMaskActivity Class
See Also  Members  
Leadtools.Workflow.ImageProcessing Namespace : UnsharpMaskActivity Class



The UnsharpMaskActivity Class is available in LEADTOOLS Document and Medical Imaging toolkits.

Sharpens the image by applying the unsharp mask.

Object Model

UnsharpMaskActivity Class

Syntax

Visual Basic (Declaration) 
Public Class UnsharpMaskActivity 
   Inherits ImageProcessingBaseActivity
   Implements IComponentIDisposable 
Visual Basic (Usage)Copy Code
Dim instance As UnsharpMaskActivity
C# 
public class UnsharpMaskActivity : ImageProcessingBaseActivity, IComponentIDisposable  
C++/CLI 
public ref class UnsharpMaskActivity : public ImageProcessingBaseActivity, IComponentIDisposable  

Remarks

  • This command is actually considered a sharpening method. It is used to sharpen the image with a minimum of noise. To reduce the noise, it starts by blurring a copy of the original image. The amount of blur depends on the Radius. The method then determines the difference between each pixel's value of the original image and the corresponding pixel's value in the blurred image. If the difference is greater than the threshold value, then the difference between the pixel values is multiplied by the amount value and added to the original pixel value.
  • To increase the thickness of the sharpened edges, increase the Radius value.
  • To increase the amount of sharpness, increase the Amount value.
  • To reduce the noise and eliminate the small edges or individual pixels that will produce noise in image, increase the Threshold value.
  • Using the Yuv color space decreases the processing time.
  • 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 32-bit grayscale images.
For more information, refer to Detecting and Enhancing Edges and Lines.

Inheritance Hierarchy

System.Object
   System.Workflow.ComponentModel.DependencyObject
      System.Workflow.ComponentModel.Activity
         Leadtools.Workflow.Raster.WorkflowImageActivity
            Leadtools.Workflow.Raster.DisposableImageActivity
               Leadtools.Workflow.ImageProcessing.ImageProcessingBaseActivity
                  Leadtools.Workflow.ImageProcessing.UnsharpMaskActivity

Requirements

Target Platforms: Microsoft .NET Framework 3.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7

See Also

Leadtools.Workflow.ImageProcessing requires a Document or Medical toolkit license and unlock key. For more information, refer to: Imaging Pro/Document/Medical Features