SliceCommand Class

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public class SliceCommand : Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

'Declaration
 
Public Class SliceCommand 
   Inherits Leadtools.ImageProcessing.RasterCommand
   Implements Leadtools.ImageProcessing.IRasterCommand

'Usage
 
Dim instance As SliceCommand

public sealed class SliceCommand : Leadtools.ImageProcessing.IRasterCommand

function Leadtools.ImageProcessing.Core.SliceCommand()

public ref class SliceCommand : public Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

.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.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

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

   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "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)

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

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

public void SliceCommandExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

      RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "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);

   }

   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);
   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

function SliceCommandExample() {
   var codecs = new Leadtools.Codecs.RasterCodecs();
   codecs.throwExceptionsOnInvalidImages = true;

   // Load the image
   var srcFileName = "Assets\\Image1.cmp";
   var processedImage;
   return Tools.AppInstallFolder().getFileAsync(srcFileName).then(function (loadFile) {
      return codecs.loadAsync(Leadtools.LeadStreamFactory.create(loadFile));
   }).then(function (image) {
      // Prepare the command
      with (Leadtools.ImageProcessing.Core) {
         var cmd = new SliceCommand();
         cmd.fillColor = Leadtools.RasterColorHelper.create(0, 0, 0);
         cmd.maximumDeskewAngle = 40;
         cmd.flags = SliceCommandFlags.bicubic | SliceCommandFlags.withoutCut | SliceCommandFlags.deskewImage;
         cmd.addEventListener("slice", SliceEventExample_S1);

         // Apply the slice command on the image.
         cmd.run(image);

         // Print out the deskew amount.
         console.error("Deskew Angle = {0}", cmd.deskewAngle);
      }
   });
}

function SliceEventExample_S1(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.error("The rotation Amount is {0}", e.deskewAngle);
}

[TestMethod]
public async Task SliceCommandExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   // Load the image
   string srcFileName = @"Assets\Image1.cmp";
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   // Prepare the command
   SliceCommand cmd = new SliceCommand();
   cmd.FillColor = RasterColorHelper.Create(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.
   Debug.WriteLine("Deskew Angle = {0}", cmd.DeskewAngle);

}

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
   Debug.WriteLine("The rotation Amount is {0}", e.DeskewAngle);
}

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

SliceCommand Members
Leadtools.ImageProcessing.Core Namespace