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SliceCommand Class
See Also  Members   Example 
Leadtools.ImageProcessing.Core Namespace : SliceCommand Class



Extracts individual slices from a radiographic scanned film. This method is available in the Raster Pro and above toolkits.

Syntax

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

Example

This event will draw a new region around the newly found slice.

Visual BasicCopy Code
Public WithEvents sliceEventExample_S1 As SliceCommand
Public Sub SliceCommandExample()
   RasterCodecs.Startup()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

   Dim leadImage As RasterImage = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Master.jpg")

   ' Prepare the command
   Dim cmd As New SliceCommand
   cmd.FillColor = New RasterColor(0, 0, 0)
   cmd.MaximumDeskewAngle = 40
   cmd.Flags = SliceCommandFlags.Bicubic Or SliceCommandFlags.WithoutCut Or SliceCommandFlags.DeskewImage

   ' Apply the slice command on the image.
   cmd.Run(leadImage)

   ' Print out the deskew amount.
   Console.WriteLine("Deskew Angle = {0}", cmd.DeskewAngle)

   RasterCodecs.Shutdown()
End Sub

Private Sub SliceEventExample_SliceCommand(ByVal sender As Object, ByVal e As SliceCommandEventArgs) Handles sliceEventExample_S1.Slice
   ' create a region around the slice
   If (e.Image.HasRegion) Then
      e.Image.AddRectangleToRegion(Nothing, e.SliceRectangle, RasterRegionCombineMode.Xor)
   Else
      e.Image.AddRectangleToRegion(Nothing, e.SliceRectangle, RasterRegionCombineMode.Set)
   End If

   ' print out the deskew angle
   Console.WriteLine("The rotation Amount is {0}", e.DeskewAngle)
End Sub
C#Copy Code
public void SliceCommandExample() 
{ 
   // Load an image 
   RasterCodecs.Startup(); 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Master.jpg"); 
 
   // Prepare the command 
   SliceCommand cmd = new SliceCommand(); 
   cmd.FillColor = new RasterColor(0, 0, 0); 
   cmd.MaximumDeskewAngle = 40; 
   cmd.Flags = SliceCommandFlags.Bicubic | SliceCommandFlags.WithoutCut | SliceCommandFlags.DeskewImage; 
   cmd.Slice += new EventHandler<SliceCommandEventArgs>(SliceEventExample_S1); 
 
   // Apply the slice command on the image. 
   cmd.Run(image); 
 
   // Print out the deskew amount. 
   Console.WriteLine("Deskew Angle = {0}", cmd.DeskewAngle); 
 
   RasterCodecs.Shutdown(); 
} 
 
private void SliceEventExample_S1(object sender, SliceCommandEventArgs e) 
{ 
   // create a region around the slice 
   if (e.Image.HasRegion) 
      e.Image.AddRectangleToRegion(null, e.SliceRectangle, Leadtools.RasterRegionCombineMode.Xor); 
   else 
      e.Image.AddRectangleToRegion(null, e.SliceRectangle, Leadtools.RasterRegionCombineMode.Set); 
 
   // print out the deskew angle 
   Console.WriteLine("The rotation Amount is {0}", e.DeskewAngle); 
}

Remarks

  • .This command is designed to extract the individual slices from radiographic scanned film. The image below shows an example of these radiographic images before and after applying the SliceCommand where we use the output data to draw a white line around each separate slice.

    Before

    After
  • This method 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 method does not support signed data images.
  • This command does not support 32-bit grayscale images.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.Core.SliceCommand

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