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InvertedTextCommand Constructor(InvertedTextCommandFlags,Int32,Int32,Int32,Int32)
See Also  Example
Leadtools.ImageProcessing.Core Namespace > InvertedTextCommand Class > InvertedTextCommand Constructor : InvertedTextCommand Constructor(InvertedTextCommandFlags,Int32,Int32,Int32,Int32)



flags
Flags that determine the behavior of the inverted text removal process.
minimumInvertWidth
The minimum width of an area that is considered to be inverted text. If the InvertedTextCommandFlags.UseDpi flag is set, units are in thousandths of an inch, otherwise units are in pixels.
minimumInvertHeight
The minimum height of an area that is considered to be inverted text. If the InvertedTextCommandFlags.UseDpi flag is set, units are in thousandths of an inch, otherwise units are in pixels.
minimumBlackPercent
The minimum percent of total pixels in an inverted text area that must be black. Areas with a lower percent of black pixels are not considered.
maximumBlackPercent
The maximum percent of total pixels in an inverted text area that must be black. Areas with a higher percent of black pixels are not considered.
Initializes a new InvertedTextCommand class object with explicit parameters. Supported in Silverlight, Windows Phone 7

Syntax

Visual Basic (Declaration) 
Public Function New( _
   ByVal flags As InvertedTextCommandFlags, _
   ByVal minimumInvertWidth As Integer, _
   ByVal minimumInvertHeight As Integer, _
   ByVal minimumBlackPercent As Integer, _
   ByVal maximumBlackPercent As Integer _
)
Visual Basic (Usage)Copy Code
Dim flags As InvertedTextCommandFlags
Dim minimumInvertWidth As Integer
Dim minimumInvertHeight As Integer
Dim minimumBlackPercent As Integer
Dim maximumBlackPercent As Integer
 
Dim instance As New InvertedTextCommand(flags, minimumInvertWidth, minimumInvertHeight, minimumBlackPercent, maximumBlackPercent)
C++/CLI 
public:
InvertedTextCommand( 
   InvertedTextCommandFlags flags,
   int minimumInvertWidth,
   int minimumInvertHeight,
   int minimumBlackPercent,
   int maximumBlackPercent
)

Parameters

flags
Flags that determine the behavior of the inverted text removal process.
minimumInvertWidth
The minimum width of an area that is considered to be inverted text. If the InvertedTextCommandFlags.UseDpi flag is set, units are in thousandths of an inch, otherwise units are in pixels.
minimumInvertHeight
The minimum height of an area that is considered to be inverted text. If the InvertedTextCommandFlags.UseDpi flag is set, units are in thousandths of an inch, otherwise units are in pixels.
minimumBlackPercent
The minimum percent of total pixels in an inverted text area that must be black. Areas with a lower percent of black pixels are not considered.
maximumBlackPercent
The maximum percent of total pixels in an inverted text area that must be black. Areas with a higher percent of black pixels are not considered.

Example

Run the InvertedTextCommand on an image.

Visual BasicCopy Code
Public WithEvents invertedTextCommand_S2 As InvertedTextCommand
Public Sub InvertedTextConstructorExample()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

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

   ' Prepare the command
   invertedTextCommand_S2 = New InvertedTextCommand(InvertedTextCommandFlags.UseDpi, 5000, 500, 70, 95)
   invertedTextCommand_S2.Run(leadImage)

End Sub

Private Sub InvertedTextCommand_InvertedText_S2(ByVal sender As Object, ByVal e As InvertedTextCommandEventArgs) Handles invertedTextCommand_S2.InvertedText
   MessageBox.Show("Size " + "( " + e.BoundingRectangle.Left.ToString() + ", " + e.BoundingRectangle.Top.ToString() + ") - " + "( " + e.BoundingRectangle.Right.ToString() + ", " + e.BoundingRectangle.Bottom.ToString() + ")" + _
      Chr(13) + " Black Count " + e.BlackCount.ToString() + _
      Chr(13) + " White Count " + e.WhiteCount.ToString())
   e.Status = RemoveStatus.Remove
End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
C#Copy Code
public void InvertedTextConstructorExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

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

      // Prepare the command
      InvertedTextCommand command = new InvertedTextCommand( InvertedTextCommandFlags.UseDpi, 5000, 500, 70, 95);
      command.InvertedText += new EventHandler<InvertedTextCommandEventArgs>(InvertedTextEvent_S2);
      command.Run(image);

   }

   private void InvertedTextEvent_S2(object sender, InvertedTextCommandEventArgs e)
   {
      MessageBox.Show("Size "           + "( " + e.BoundingRectangle.Left + ", " + e.BoundingRectangle.Top + ") - " + "( " + e.BoundingRectangle.Right + ", " + e.BoundingRectangle.Bottom + ")" +
         "\n Black Count " + e.BlackCount.ToString() + 
         "\n White Count " + e.WhiteCount.ToString());
      e.Status = RemoveStatus.Remove;
   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
SilverlightCSharpCopy Code
public void InvertedTextConstructorExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   InvertedTextCommand command = new InvertedTextCommand( InvertedTextCommandFlags.UseDpi, 5000, 500, 70, 95);
   command.InvertedText += new EventHandler<InvertedTextCommandEventArgs>(InvertedTextEvent_S2);
   command.Run(image);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.CcittGroup4, 1);
   image.Dispose();
}

private void InvertedTextEvent_S2(object sender, InvertedTextCommandEventArgs e)
{
   Debug.WriteLine("Size "           + "( " + e.BoundingRectangle.Left + ", " + e.BoundingRectangle.Top + ") - " + "( " + e.BoundingRectangle.Right + ", " + e.BoundingRectangle.Bottom + ")" +
      "\n Black Count " + e.BlackCount.ToString() + 
      "\n White Count " + e.WhiteCount.ToString());
   e.Status = RemoveStatus.Remove;
}
SilverlightVBCopy Code
Public Sub InvertedTextConstructorExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim command As InvertedTextCommand = New InvertedTextCommand(InvertedTextCommandFlags.UseDpi, 5000, 500, 70, 95)
   AddHandler command.InvertedText, AddressOf InvertedTextEvent_S2
   command.Run(image)
   ' Save result image
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, outStream, RasterImageFormat.CcittGroup4, 1)
   image.Dispose()
End Sub

Private Sub InvertedTextEvent_S2(ByVal sender As Object, ByVal e As InvertedTextCommandEventArgs)
   Debug.WriteLine("Size " & "( " & e.BoundingRectangle.Left & ", " & e.BoundingRectangle.Top & ") - " & "( " & e.BoundingRectangle.Right & ", " & e.BoundingRectangle.Bottom & ")" & Constants.vbLf & " Black Count " & e.BlackCount.ToString() & Constants.vbLf & " White Count " & e.WhiteCount.ToString())
   e.Status = RemoveStatus.Remove
End Sub

Requirements

Target Platforms: Silverlight 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)

See Also