←Select platform

InvertedTextCommand Constructor(InvertedTextCommandFlags,int,int,int,int)

Summary

Initializes a new InvertedTextCommand class object with explicit parameters.

Syntax
C#
VB
Java
Objective-C
C++
Public Function New( _ 
   ByVal flags As InvertedTextCommandFlags, _ 
   ByVal minimumInvertWidth As Integer, _ 
   ByVal minimumInvertHeight As Integer, _ 
   ByVal minimumBlackPercent As Integer, _ 
   ByVal maximumBlackPercent As Integer _ 
) 
- (instancetype)initWithFlags:(LTInvertedTextCommandFlags)flags 
           minimumInvertWidth:(NSInteger)minimumInvertWidth 
          minimumInvertHeight:(NSInteger)minimumInvertHeight 
          minimumBlackPercent:(NSInteger)minimumBlackPercent 
          maximumBlackPercent:(NSInteger)maximumBlackPercent 
public InvertedTextCommand( 
   int 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.

C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
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"; 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
 
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#[Silverlight C# Example] 
using Leadtools; 
using Leadtools.Examples; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
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; 
} 
vb[Silverlight VB Example] 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
 
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

Help Version 20.0.2019.3.12
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2019 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.ImageProcessing.Core Assembly